The company Sport Box d.o.o. and club SRK Alba co-organise the 100 Miles of Istria with the assistance of the towns: Labin, Buzet, Pazin, Buje, Umag, and the municipalities: Kršan, Mošćenička Draga, Lovran, Lupoglav, Lanišće, Motovun, Oprtalj, and Grožnjan.

Participation in the 100 Miles of Istria events implies the express acceptance, without reserve, of the present regulations, the ethics of the event and any instructions sent by the organizer to the participants.

The 100 Miles of Istria is an event within which are a certain number of events in open country, using the great hiking routes of Istria and Kvarner region. Each event takes place in one single stage, at an undefined pace within a time limit.

  • RED: around 168 km long with 6.390 meters of height difference, starts from Labin, in semi-autonomy, 46 hrs max. Around* 600 runners.
  • BLUE: around 128 km long with 4.940 meters of height difference, starts from Lovran, in semi-autonomy, 34 hrs max. Around* 600 runners.
  • GREEN: around 67 km long with 2.150 meters of height difference, starts from Buzet, in semi-autonomy, 15 hrs max. Around* 600 runners.
  • YELLOW: around 41 km long with 940 meters of height difference, starts from Motovun, in semi-autonomy, 8 hrs max. Around* 600 runners.
  • WHITE: around 20 km long with 140 meters of height difference, starts from Grožnjan, in semi-autonomy, 4 hrs max. Around* 600 runners.

*A number of delimited places are reserved for: our partners, the international elite (based on the ITRA performance index), 2019 winners and certain journalists (who are reporting from within the race), as well as certain volunteers who are very active.

The races are open to any person, male or female, licensed, or not. A declaration of liability has to be signed by the parents from participants born in 2002 or younger.

The participants born between 2002 and 2004 may only participate in the following courses: GREEN, YELLOW and WHITE.

Registration has to be made online at the registration portal of the event The indemnity provision and the Conditions for participation have to be accepted during online registration. A participant only becomes entitled to a starting slot after a succesful payment provided that slots are still available.

Each participant has to pick up his/her starting pack in person.

Athletes who have been found guilty of doping will not be admitted. Moreover, the organizer is entitled to disqualify athletes for reasons important to the organizer.

Registration is available online at All registrations and management of all entrants data are handled by our timekeeping service. By registering to the 100 Miles of Istria, competitors automatically accept the competition regulations. Registration is final. The fee must be paid online by credit card via a secure payment system.

COURSE July 18th 2019 – December 31st 2019 January 1st 2020 – February 29th 2020
RED 140 € 140 € + 6,5% Active fee
BLUE 110 € 110 € + 6,5% Active fee
GREEN 70 € 70 € + 6,5% Active fee
YELLOW 60 € 60 € + 6,5% Active fee
WHITE 40 € 40 € + 6,5% Active fee

The fee covers the following:

  • personalized bib number including RFID time keeping-tag
  • starter pack with gifts
  • drop bags for RED and BLUE course
  • clothing service (small bags) for all courses, clothing bags will be transported from the start to the finish line in Umag
  • rich aid stations, approximately every 15 km with drinks and food
  • showers and changing room facilities next to the finish area
  • a hot meal in Umag
  • massage service next to the finish area
  • finisher’s medal for all finisher at each course
  • medical first aid in the finish area
  • finisher’s certificate downloadable from the dedicated online repository
  • live timekeeping, interim times and results
  • a hot meal in Buzet (RED and BLUE only)
  • showers and rest area in Buzet (RED and BLUE only)

The fee doesn’t cover:

  • bus transfer from Umag to the start of each course (can be reserved during the online registration), to be paid 5 €

A route change to a shorter distance is possible and will incur a surcharge of 5 €. The entry fee difference will not be refunded.

Likewise, transfer of competitor’s registration to another person is possible and will incur a surcharge of 5 €. Note: deadline for registration transfer is February 29th, 2020.

To participate in the 100 Miles of Istria events, in particular, on the RED and BLUE course, it is essential :

  • To be completely aware of the length and  specificity of the event and to be perfectly prepared for it ;
  • To have  acquired, previous to the race, real capacity of personal autonomy in the mountains allowing for the management of problems induced by this type of event, and notably:
    • Know how to confront, without outside help, climatic conditions which could be very difficult to deal with at altitude (night, wind, cold, fog, rain or snow) ;
    • Know how to manage, including when one is isolated, physical or mental problems arising from great fatigue, digestive problems, muscle or articular pains, small wounds…
    • To be totally conscious that the organization’s role is not to help a runner manage these problems;
    • To be totally aware that for such an activity in the mountains security depends upon the runner’s capacity to adapt to the problems encountered or foreseen
    • To inform and to sensitize the members of the runner’s entourage towards the respect of nature, people and the regulations of the race.
    • To accept to receive newsletters providing information about the event.

The principal of an individual race in semi-autonomy is the rule. The 100 Miles of Istria events take place in one single stage, at an undefined pace, within the limits of the time barriers which are specified for each event. Semi-autonomy is defined as having the capacity to be autonomous between two refreshments posts, as much on the food front as that of clothing and security, allowing for  adapting to problems encountered or foreseen (bad weather, physical problems, injury…)

This principle  implies, in particular, the following rules:

  1. Each runner must have with them throughout the duration of the race the totality of their mandatory equipment (see paragraph 8. EQUIPMENT). At any moment of the race, pack and its contents can be checked by the race officials. The runner is obliged to submit to these checks in good faith, at the risk of exclusion from the race.
  1. The refreshment posts supply drinks and food to be consumed on site. The organization only supplies still water or energizing drink for filling water bottles or hydration packs.  When leaving the aid station, the runners should take care to ensure they have the quantity of drink and food which is necessary to keep them going until the following aid station.
  2. Personal assistance is tolerated exclusively at certain aid stations (*), in the zone specifically reserved for this use. Assistance can only be given by one person, without specific equipment other than a bag with a maximum volume of  30 liters. Assistance given by a team of professionals, or any medic or paramedic, is strictly forbidden. The rest of the refreshment post is strictly reserved for the runners.
  3. It is forbidden to accompany or be accompanied along any part the race route by a person not registered for the race, outside of the tolerance zones which are clearly marked in the proximity of the refreshment posts.

Note: A participant who accepts being filmed, and therefore accompanied, outside of the expressly designated zones contravenes the principle of semi-autonomy. The race officials witnessing irregularities are authorized to penalize the participants in order to guarantee the spirit of trail-running events.

(*) Personal assistance is tolerated at the following aid stations:
Mošćenička Draga, Poklon, Buzet and Livade

It is forbidden at all other refreshment posts, as well as at any other point of the race route.

In order to ensure their security and the good progress of each event, each participant must have at their disposal the all the mandatory equipment on the list, detailed below.

The  “hot-weather”, “cold-weather” kits are integrally a part of the obligatory equipment. According to the weather conditions, the organizers can activate a kit and inform each participant before the opening of the race-bib distribution for their race. Each participant must, therefore, present their mandatory equipment, including the kit activated by the organizers, in order to retrieve their race-bib, and agree to keep it with them throughout the event.

It is important to note that the material imposed by the organizers is a vital minimum which each trail-runner must adapt in function to their own capacities.  In particular, they must not choose the lightest weight clothing possible in order to gain a few grams but opt for clothing which really offers good protection in the mountains against the cold, wind and snow, which therefore give better security and better performance.

Basic Kit

race pack destined to transport obligatory equipment throughout the race O O O O R
mobile phone O O O O O
personal beaker 15 cl minimum O O O O O
supply of water 1-liter minimum O O O O R
head torch O O O
spare batteries for the head torch O O
survival blanket 1,40 x 2,0 m minimum O O O O O
basic first aid kit O O O O O
whistle O O O O O
food reserve O O O O R
hooded jacket O O O TBA TBA
long legged trousers or a legging+socks combination (cover the leg completely) O O R
cap or bandana O O R R R
additional warm second layer O O
waterproof over-trousers TBA TBA
ID or passport O O O O O
  • Mobile phone (smartphone strongly recommended): the runner must be reachable at any time before, during and after the race:
    • mobile phone with international roaming allowing for its use in Croatia (load into its memory the organization’s security numbers, don’t hide your number and don’t forget to leave with the battery fully charged)
    • Keep the phone on, airplane mode is prohibited and it could lead to a penalty.
  • head torch in good working order with spare cells/batteries
    • Recommendation: 200 lumens or more
  • basic first aid kit
    • 2 gauze pads 10 x 10 cm minimum
    • 1 gauze roller bandage
    • a box of adhesive bandages
  • Food reserve
    • Recommendation : 800kcal (2 gels + 2 energising bars each of 65g )
  • The hooded jacket which can withstand bad weather in the mountains with waterproof* and breathable** membrane (eg. Outdry)
    • *minimum recommended 10 000 Schmerber
    • **RET recommended inferior to 13
    • the jacket must, imperatively, be fitted with an integrated hood or one which is attached to the jacket by the original system designed for that purpose by the manufacturer.
    • the seams must be sealed.
    • the jacket must not have sections of fabric which are not waterproof, but air vents fitted by the manufacturer (under-arm, in the back) since they do not damage in any obvious way the impermeability, are accepted.
    • It is the runner’s responsibility to judge, with these criteria, if their jacket fits the regulations stated but, during a check, the judgment is made by the person in charge of the check or the race official.
  • Additional warm second layer: a warm second layer top with long sleeves (cotton excluded) of a weight of  a minimum of 180g  (men’s size medium (M) )
    OR the combination of a warm long sleeved underwear  (first or second layer, cotton excluded) of a minimum weight of 110g  (men’s size medium (M) ) and a durable water repellant (DWR protection) windproof jacket*

    • *the wind-proof jacket does not replace the obligatory waterproof jacket, and vice versa

Hot-weather kit (can be deemed necessary by the organization, according to weather conditions)

sunglasses O O O R R
Saharan cap or any combination which

completely covers the head and nape of the back

sun cream O O O R R
supply of water 2-liter minimum O O O R R

Cold weather kit (can be deemed necessary by the organization, according to weather conditions)

3rd warm layer O O R R R
robust and closed running shoes (minimalist, ultralight and sandals excluded) O O O O O
warm hat O O O O O
warm and waterproof gloves O O O R R
  • 3rd warm layer  (the intermediary layer between the 2nd layer and the waterproof jacket)
    • Recommendation: fleece or compressible down jacket


  • O – obligatory
  • R – recommended
  • TBA – to be announced

The Organization of the 100 Miles of Istria has decided to set up the QUARTZ Event program to protect your health and contribute to doping-free sport. This program is open to all participants. This program has neither the vocation nor the competence to replace anti-doping rules but aims to strengthen the medical supervision before and during the competition. QUARTZ Event program is carried out in collaboration with the International Trail Running Association (ITRA), Athletes For Transparency association (AFT) and Ultra Sports Science Foundation (USS); it is managed by a Health Commission solely composed of doctors. This Health Commission can take advice from experts of its choice and specifically give consultative advice to the race direction on the medical condition of participants. This Health Commission can go as far as to suggest to the race direction that a participant should be excluded from competition for health reasons.

Each participant agrees to:

  1. Declare to the Health Commission the following medical information:
    • Any medical history and/or pathology, in particular, those which may increase risks during the practice of a sport
    • The use of regular treatments or medication during the 30 days prior to the start of the competition
    • Request or use of a substance or method subject to a Therapeutic Use Exemption (TUE)
  2. Provide all urinary and/or blood and/or hair and/or salivary samples required from 30 days before the competition and up to 7 days after the competition. He/she also consents to the associated analysis of these samples, on the understanding that the costs for the sampling and analyses are covered directly by the Organization.
  3. Accept not to participate in the competition if glucocorticoids have been used, without any relation to the mode of administration and therefore the presence or not of a TUE, within the 7 days before the start of the competition. The use of glucocorticoids may be identified in the context of the analysis carried out, either from a direct dosage or in the case of abnormally low cortisol.
  4. Accept to answer any meeting request on-site or remotely (phone or video conference) that the Health Commission may ask for in order to discuss their ability or not, to participate in the competition.
  5. Submit any doping control form completed within 30 days before the start of the competition and up to 15 days after the competition. Each form must be legible.
  6. Accept the use of strictly anonymous data for research purposes. Each participant has a right of access, rectification, and opposition to data concerning him. The Health Commission is the authority with which the participant can exercise this right.

The declaration of medical information to the Health Commission is done through the ITRA health space that each participant can activate after having created a free runner account on the ITRA website: The declared medical information is only accessible by the doctors of the Health Commission or in the event of medical care being carried out during the competition the declared medical information will also be made available to the medical team.

Any unreasonable breach, refusal, or transmission of erroneous information in connection with QUARTZ Event program can result in the exclusion of the participant from the competition.

The anti-doping rules of the International Association of Athletics Federations (IAAF), Croatian Athletics Federation (HAS), the World Anti-doping Association (WADA) and the National Anti-doping Agency are fully applied. These rules are accessible on the relevant websites. Athletes taking part in the competition are obliged to familiarize themselves with these rules as well as the procedures on checks, sanctions, and appeals.

Any competitor could be subjected to an anti-doping control before, during or at the finish of an event. In the case of a refusal or abstention, the sports-person will be sanctioned in the same manner as that were they to have been convicted of doping.

Competitors are advised to obtain insurance. Each competitor should be covered by accident insurance. This must cover potential costs for Rescue operations (particularly helicopter evacuation, search, and action by rescue) and treatment. Any damage claims from competitors against the Race Organizer, regardless of their legal reason, are void.

For members of the ITRA (International Trail Running Association), it is possible to subscribe to an Assistance – Repatriation insurance which covers the cost of search and rescue world-wide. For more information go to

The choice of the method of evacuation and the actual choice of hospital is at the discretion of the search and rescue and medical officials.

Expenses arising from the use of exceptional methods of rescue or evacuation have to be paid by the person rescued who will also have to pay their return from the place to where they were evacuated. It falls to the runner to create their file and present it to their insurance company within the stated time limit.

By registering for the 100 Miles of Istria event, participants agree to respect the environment and the natural areas they pass through. In particular :

  • It is strictly forbidden to abandon your rubbish (gel tubes, paper, organic detritus, plastic wrappers…) along the race route. Trash/rubbish bins are available at each aid station and it is imperative that they are used. The race officials conduct random checks all along the race route.
  • All participants must keep any rubbish and wrappers with them until they can throw them in the bins which are provided for them at each aid stations. The organization encourages runners to equip themselves with a bag or pouch in which to transport their waste to the next bin.
  • It is imperative that you follow the paths as they are way-marked, without short-cutting them.
  • No disposable plastic dishes (cutlery, cups, bowls) will be distributed at the aid stations. This is to reduce the plastic usage by runners, as well as by the volunteers of the 100 Miles of Istria. Instead of the plastic utensils, the organizer will provide wooden or paper ones.

Concerning the recognition of high caliber athletes and also for the fair management of registration, we reserve places for elite athletes, who make the request, according to strict criteria based on the ITRA performance index.

All requests for registration must reach us by email ( before February 29th 2020. Registration for elite athletes is not semi-automatic, each one must finalize their registration themselves upon receiving the voucher code from the organizer.

men women men women
free registration >870 >770 >830 >730
guaranteed registration but fee to be paid >770 >670 >730 >630

Having the status of an international elite creates rights and duties for the athletes concerned. They are as below :

Rights :

  • In regard of justified recognition for athletes of a high caliber and for fair management of registration, we reserve places for elite athletes, who request a place, according to precise criteria based on their general ITRA performance index data.
  • A special personalized start bib
  • Priority registration and equipment check

Duties :

  • At the start of the races, elite athletes are invited to position themselves at the front of the start line.
  • Be present at any press conferences and official ceremonies to which they are invited ;
  • Be present at prize-giving ceremonies if it concerns them ;
  • Accept to carry a GPS tag, supplied by the organization at the start of the race, throughout the totality of the race; then to return this tag at the end of their race;
  • Be present at the start line no later than 20 minutes before the start of the event.

Every competitor expressly foregoes the right for any images or video footage during the event, just as they renounce any right of appeal to the organizers and their partners for the use of their image. Only the organization can transfer this right for images and videos to any media, via an accreditation or relevant license.

All communication about the event or the use of images or videos from the event must respect the name of the event, the registered trademark and have official approval from the organization.

Sponsored competitors can only display their sponsor’s logos on their clothing and equipment used during the race. All other publicity accessories (flags, banners… ) are forbidden at all points of the race route including the finish line, at the risk of a penalty given by the discretion of the race directors.

With the registration, the participant agrees that personal data can be gathered and passed on to third parties for the purposes of timekeeping, rankings, and results as well as for the publication of respective lists on the internet.

The information is collected as part of a registration for one of the 100 Miles of Istra courses, for the needs of the organization and in particular to identify each competitor in order to communicate his/her information related to his/her participation before, during or after the event.

The participant agrees that his first name, last name, country, date of birth, team name, bib number and results (ranking, time) may be published in all print and electronic media relevant to the event.

The runner’s data is kept in the database for 10 years. This period is renewable at each registration and corresponds to the legal data retention period of the medical and non-contraindication to the practice of athletics or running in competition certificate, or the sports card. Beyond these 10 years, and unless the runner authorizes the organization to keep his/her data, all data are deleted except the runner’s surname, first name, date of birth, gender and nationality to maintain the rankings.

According to the General Data Protection Regulations (EU RGPD 2016/679), any competitor has the right to access and amend every information concerning him/her. This can be done via his/her runner’s page which is available at the Active network platform.

Any data modification can be made by the competitors themselves.

Each race bib is distributed individually to each runner upon presentation of :

  • An ID card or passport (document with the photo),
  • Your race pack and all the mandatory equipment.

The race bib must be worn on the chest or stomach and be permanently and completely visible throughout the totality of the race. It must always be placed on top of all clothing and can in no case be positioned on a leg or pack. The name and partner’s logos must not be either modified or hidden. The race-bib is the pass necessary for accessing the shuttle buses, buses, refreshment posts, infirmary, rest areas, showers, drop-off or pick-up areas for drop sacks… Except in the case of a refusal to comply with a decision taken by a race official, the bib is never taken away. Only in the case of abandonment, the bib is deactivated.

RED/BLUE: each competitor receives a big (30-liter) bag and a small bag with their race bib.

The big one: for the aid station Buzet. After having filled it with the necessities of their choice and having closed it they can drop it off ONLY in the designated area in Umag. This bag is taken to aid station Buzet by the organization. Upon arriving in Buzet the runner must, obligatorily, withdraw their bag. When they leave the aid station they, personally, leave their bag in the designated area. The bags are then returned to Umag.

Small bag: for the personal stuff/gear at the start point. Having filled it with the stuff competitors doesn’t want to carry along the course, they can deposit it at the designated places at each race start. The bags are then taken back to Umag.

GREEN/YELLOW/WHITE: each competitor receives a small bag with their race bib.

Small one: for the personal stuff/gear at the start point. Having filled it with the stuff competitors doesn’t want to carry along the course, they can deposit it at the designated places at each race start. The bags are then taken back to Umag.

Note 1: Competitors are advised not to place objects of value in the bags; the organizer accepts no liability for any theft, loss or damage of bags or their contents.

Note 2: The small bags can be deposited ONLY at the start location.

Recuperation of bags in Umag: The bags are returned to either the competitor or a family member or friend, uniquely upon presentation of the race-bib. The bags must be recuperated no later than 2 hours after the end of the race. After that time, the runner must come, in person, to recuperate their bag, at their own cost, from the organization in Umag.

The organization ensures the repatriation, to Umag, of any bags of runners who abandon, on the condition that the abandonment has been registered. The delay of the repatriation is in relation to logistical constraints and the organization can not guarantee a complete repatriation of bags before the end of the race.

Only bags supplied by the organization will be transported. Poles are not allowed in these bags. The contents of the bags will not be verified, no complaint about the contents of the bag at the finish will be accepted.

The organization ensures the presence of solid and liquid refreshments along the race-route. The aid stations supply drinks and food for consuming in situ. The organization supplies still water and energizing drink for filling water bottles/hydration packs and personal beakers. The competitor must take care when leaving each aid station, that they have enough food and drink to last them to the next aid station.

Only runners wearing a visible race-bib who have been duly checked have access to the aid stations.
The Race guide (to be published in March 2020) will have a complete list of aid stations and what they serve.

A check is carried out at the arrival at an aid station and at certain security posts.
Unexpected check posts are set-up at posts other than those of aid stations or security posts. Their location is not divulged by the organization.