25 km Deer Trail

25 km - Deer Trail

May 29, 2027 at 09:30 – Kočevje, Slovenia

“The forest won’t ask how fast you are. It will show you who you are when the going gets tough.” — The Kočevsko Deer 

The 25 km Deer Trail is a varied circular trail designed for runners who already have some trail-running experience and want to take the next step towards longer distances. It offers a genuine sporting challenge while remaining runnable enough for those who manage their energy wisely and maintain a steady pace. 

The race starts and finishes at Lake Kočevje. After passing through Šalka vas, the route quickly enters the vast forests of Kočevsko and continues towards Somova gora, Onek, Mačkovec and Kapelica. Forest sections alternate with shorter climbs and descents, keeping the course varied throughout. 

Around halfway through the race, runners face the climb to Lovski vrh, the highest point of the route. From the summit, views open up across the vast Kočevsko forests, while an additional aid station awaits just below. During the climb, the route joins the 35 km and 50 km courses. 

From there, the trail heads back towards Lake Kočevje. In the final section, it merges with the 15 km, 10 km and 5 km courses before they all lead together towards the finish line and the vibrant energy of the festival venue. 

For runners with some trail-running experience | Mostly through the Kočevsko forests |  A varied course where rhythm and endurance matter 

ITRA & UTMB Index

  • ITRA: 1 point
  • UTMB Index*: YES
  • Running Stones: NO (the event is not part of the UTMB World Series)

*All participants of the 25 km distance receive a UTMB Index, in accordance with UTMB rules.

Difficulty: Medium–hard  
Surface: Forest singletracks, forest roads, meadows  
Start/Finish: Rudniško Lake, Kočevje 
Time limit: 6 hours  
Aid stations: 4 

Aid stations

We are trying to reduce negative effects of the festival on the environment, therefore cups for one-time use will not be available at the water stations and feed zones. We ask runners to bring their own cup, bottle or a camel bag to use it at water stations and fit zones for water and energy drinks.

There will be four (4) aid stations at the 25 km route.

Location

Distance from the start

Location 1 (F+D) 

Location 2 (F+D) 

Location 3 (F+D) Lovski vrh

Location 4 (F+D)

Finish (F+D)

3,6 km

6,5 km

12,5 km

21,4 km

25,2 km

F = food

D = drink

Registrations

Registation fee pricing

Group registrations

  • Group members can participate at different distances
  • Minimum number of runners per group is 5
  • Registration fee prices are 15% lower than individual registrations
  • if you would like to apply as a group, send us an email to kocevsko@trailrun.si and we will you a form to fill out

Pairs - Run with colleague!

  • one pair consists of two (2) runners
  • categories:
    • men pairs
    • women pairs
    • mixed pairs
  • pairs start on their chosen distance (5, 10, 15, 25, 35, 50 km) together with all other runners
  • start times are the same as for all other runners at that distance
  • both runners must complete full distance  (5, 10, 15, 25, 35, 50 km) and cross the finish line together 
  • one team member completes registration for both runners 
  • one team member completes registration fee payment for both runners

Registration deadlines and fees for pairs

Childcare will be available on Saturday, May 29, 2027, from 7:30 AM to 2:30 PM in Kočevje, where children will create, explore colors and materials and play in a safe and stimulating environment during the festival. While you focus on your challenge, they will develop imagination, cooperation and confidence through play and collaborative activities.

Other

  • The registration service will be set at the main festival venue.
  • By registering in the online application form and paying the registration fee, the competitor confirms that he agrees with the conditions and that he competes at his own risk. For entries on the venue on the day of the event, the competitor signs the application form confirming the acceptance of the conditions and the competition at his own risk.
  • For minors, the responsibility is taken over by parents or guardians who sign the application form upon registration.
  • Participants allow photographing and allow the organizer to use the photographs for the promotion of the Kočevsko Outdoor Festival.
  • Medical care will be placed along the trail.
  • The organizer reserves the right to make changes to the event program. If any changes shall be accepted the participants will be notified in time.
  • The organizer does not accept liability for any damage or injury made by the competitors to themselves, to other competitors or to a third person.
  • The organizer does not accept liability for any damage made on your running gear.
  • All runners participate at their own responsibility.
  • A designated parking space will be available for teams, competitors and spectators.
  • We do not return paid registration fees.

Contact

For any additional questions, contact: kocevsko@trailrun.si

Categories

  • Men up to 30 years (born 1995 or younger)
  • Men up to 40 years (born between 1985 and 1994)
  • Men up to 50 years (born between 1975 and 1984)
  • Men up to 60 years (born between 1965 and 1974)
  • Men above 60 years (born before 1964)
  • Women up to 30 years (born 1995 or younger)
  • Women up to 40 years (born between 1985 and 1994)
  • Women up to 50 years (born between 1975 and 1984)
  • Women up to 60 years (born between 1965 and 1974)
  • Women above 60 years (born before 1965)
  •  

In order for a category to be valid, there must be at least 10 female or male runners signed up.

Mandatory gear

* BIB number that must always be visible
Appropriate running shoes
Water reserve for the time between aid stations (1L)
*Cup (15 cL minimum)
Survival blanket (1,40 x 2,0 m minimum)
*Hooded jacket
Whistle
Mobile phone
Food reserve
*Basic first aid kit
Hat/buff and gloves

* BIB number must be placed at the front of your body, to your t-shirt or a belt

* You need to bring your own drinking cup (15 cL minimum). There will be no plastic cups at aid stations, so each runner must provide their own.

* Hooded jacket. The jacket must have a hood and must be waterproof.

* Basic first aid kit, which must have at least one or two gauzes, one elastic bandage and a packet of plasters.

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