REGISTRATION

Sales period:

Registration will be open to the runners with a valid UTMB index only from 16. June, 2026. at 14.00 h CEST until 18. June, 2026. at 14.00 h CEST.
At the end of this period, registrations will be open to runners with or without valid UTMB index until 31.1.2027. at 23.59 h CEST or until the races are sold out.

There will be no waiting list.

Minimum age:

• Anyone born on the 31st December 2009 or before may register to race Istria 168K
• Anyone born on the 31st December 2009 or before may register to race Istria 110K
• Anyone born on the 31st December 2009 or before may register to race Istria 69K
• Anyone born on the 31st December 2009 or before may register to race Istria 42K
• Anyone born on the 31st December 2011 or before may register to race Istria 21K

Age categories:

WHAT IS INCLUDED:

• Race Bib
• Access to aid stations
• Finisher medal
• Transport of the spare bags (depending on the distance)
• Medical assistance
• Participant Gift
• After race services.

For security and control reasons, registration is nominal and non-transferable. Transfer of bibs between runners is not permitted.

It is possible to transfer a registration to a shorter distance until 3 weeks before the event and in the limit of places available. In this case, no refund will be made. The event organiser must be contacted directly via email.

It is also possible to ask to transfer a registration to a longer distance but the request will not be automatically accepted and will be at the discretion of the race director.
Transfers are only available if the new distance is not sold out.

It is not possible to to postpone the registration to the following year.

21K: the registration is not refundable.
168K, 110K, 69K and 42K: withdrawal requests must be received during the following time frames in order to be eligible for a partial refund:

Process for withdrawals

To request your cancellation, enter into your Participant Dashboard and click on Cancel My Registration.
Our team will process your request and process the partial refund if it applies, according to the withdrawal conditions.

Elite runners can obtain a free access or direct access to the UTMB World Series Events and UTMB World Series Majors.
In order to give fair recognition to high level athletes and to ensure a fair management of entry applications, we reserve places for elite athletes according to their Performance Index in the category of the race they chose to compete.

Elite runners must register during the registration period, no registration will be accepted after the deadline.
Once a distance is sold out, the event organiser has the right to refuse an elite registration. All elites must register to a race at least 60 days before the race.

See the requirements to qualify as an elite athlete here >> (section: Elite Runners)

Medical certificate is not required. But we recommend the runners to have regular medical check-ups, especially for those who are exposed to a greater physical load.

UTMB® strives to facilitate and encourage the participation of women in trail running races, and has therefore implemented a new policy concerning pregnancy which applies to all the events of the UTMB® World Series circuit.

FOR WHOM?

• Pregnant athletes.
• Athletes with a pregnant partner.
• Athletes who adopt or procreate through surrogacy.

You can find all the information here: https://utmb.world/inclusion
You can contact the organiser to benefit a deferral or refund depending on the conditions listed in the link above.

As part of UTMB's ongoing efforts to increase and encourage the participation of athletes with disabilities in trail running races, UTMB has implemented a new policy for all UTMB World Series events. Find it here: Inclusion & Diversity (utmb.world)

WHO IS ELIGIBLE FOR THE POLICY?
This policy will apply to athletes in the adaptive athlete open division. Participation in the Adaptive Athlete Open Division is available to athletes with the following disabilities:
• Visual Impairment
• Intellectual Disability
• Physical or Neurological Movement Disability

RUNNER-GUIDE POLICY :
All adaptive athletes are allocated an extra bib number, free of charge, for a guide runner to accompany them on all or parts of their race.

PROCESS FOR ADAPTIVE ATHLETES :

1. Complete the Adaptive Athlete Open Application.
2. You will be contacted once your adaptive athlete status has been approved.
3. When you register to a new event, please directly contact the race organization with the confirmation of your adaptive athlete open approval.
4. If you require a runner-guide, please contact the race organization directly with the following information : the name and contact details of your chosen runner-guide. Please contact the organization as soon as you have registered.