The extra-long distance and its exact length will be announced by the end of November 2025.

• 6 km (elevation - 149 m)
  • in GPX format to download here.
• Nova Sport 12 km (elevation -  373 m)
  • in GPX format to download here.
• ČSOB 18 km (elevation - 577 m)
  • in GPX format to download here.

UTMB Index Races

This race is part of the UTMB Index Races.The 20 km index at Karlštejn applies to the long ČSOB route. It is an international point-based ranking system for trail races. After completing the race, runners receive a UTMB Index based on the distance of the route, their performance, and placement.

Conti Speed Section

The Conti Speed Section is a 150-meter speed section on the route. Both the start and the end will be marked by Continental flags. At Karlštejn, competition will take place on the Nova Sport 12 km and ČSOB 18 km. The prize in the competition is a voucher worth 5000 CZK for the purchase of new Continental tires and a Continental running jersey.

Completion of the race is a condition for inclusion in the bonus. Each participant can only win a tyre voucher twice per season. Should he win at another race, the prize will pass to the next in line. The original winner will receive a Continental running jersey and remain in the results.

This year, we extended the finish line to 500m in cooperation with Generali investments. Generali Investments Finish is another sprint segment as a part of all adult events. The start of the sprint segment will be marked 500m infront of the finish by the FINISH banner in red colours. The "finish" itself will be the finish gauntry of the whole event. You can find your results in Generali Investment analasys on our website or in your SportID, where among other things, you can compare your results with the time of the winner.

The title of GENERALI INVESTMENTS FINISHER #1 will be awarded to the fastest male and female athlete between all distances combined and our winners will receive Craft Running T-shirt.

Register

When purchasing two or more short-distance races within a single order, you will receive a discount of CZK 25 on each registration.
When purchasing two or more medium or long distance races within a single order, you will receive a discount of CZK 50 on each registration.

When purchasing 8 short-distance races for one competitor within a single order, the entry fee per race is CZK 450.
When purchasing 8 medium-distance races for one competitor within a single order, the entry fee per race is CZK 700.
When purchasing 8 long-distance races for one competitor within a single order, the entry fee per race is CZK 750.
When purchasing 8 children’s races for one competitor within a single order, the entry fee per race is CZK 150.

• Registrations are valid only after the entry fee has been paid. The entry fee must be paid on the day of registration. If the organizer does not receive the payment within three days of registration, the application will be cancelled.
• Until Sunday, April 5, the entry fee may be paid by bank transfer or credit card.
  From Monday to Wednesday (April 6–8), payment is possible by credit card only.
• Until Sunday, March 22, transferring an entry fee to another competitor or to another race is subject to a CZK 100 fee.
  Changing the race distance is free of charge.
  After Sunday, March 22, changes to registrations are subject to a CZK 200 fee, and changes to the race distance are subject to a CZK 100 fee.
• Competitors can transfer their entry fee or change their race distance directly via their SportID account. In the “My Registrations” section, simply click the button “Change Order.”
  A detailed step-by-step guide is available in the “Re-registration and Entry Fee Changes” menu.
• From April 9, it will no longer be possible to transfer an entry fee to another race. Transferring an entry fee to another competitor or changing the race distance will no longer be available online, but can be done on-site at the race on April 11 at the registration tent. Please bring a printed copy of your original order.
• If a course (new distance) reaches full capacity, course changes will not be possible.
• Entry fees of competitors who do not participate will not be refunded. In case the race is cancelled, the entry fee is non-refundable.

• Race number with timing chip and gifts from partners

• Name on the race number if registered and the entry fee is paid by March 22

• Gold number for 2025 Osmerák finishers if registered and the entry fee is paid by March 22

• Changing rooms, baggage storage, mobile toilets, and washing troughs

• Refreshments on the course and at the finish (water, fruit, and energy bars)

• Medical service

• Participant medal made from eco-friendly materials

• SMS with finish time

• Photographs and certificate available for free download (for correct photo assignment, the race number must be visible at the front of the body)

• Partner booths selling refreshments

• Awards for the first three finishers on each course and the first three in each category

• In children’s races additionally: cotton t-shirt from the limited edition Běhej lesy by main partner Dr. Max

• Parking is NOT included in the entry fee

The reusable Speedcup is NOT included in the entry fee. If you do not have one, it must be purchased during registration via SportID or directly on-site. We support sustainability and ecology, so our refreshment stations do not provide disposable cups; therefore, it is necessary to have your own drinking container

[/roleta]

[roleta = TIME SCHEDULE, close, #EF4123]

• It will be specified.

• You can find the race rules and information about team competitions here.

Part of the Běhej lesy Karlštejn race is also the children's race Dr. Max for 100 m, 500 m and 1 km, intended for all children under 15 years of age.

Capacity is 500 children.

• The starts of children's races are divided according to age categories into 6 starts (the division into individual starts 1-6 is for children indicated on the start numbers)
• Competitors are automatically assigned to an age category according to their date of birth after registration.
• Competitors are automatically assigned to a given age category based on their date of birth after registering for the race. In the case of children's races, a competitor can be reassigned to an older age category based on an official request or can complete more starts. Each additional start is charged according to the currently valid price list. The official request can be sent by email (info@sportid.cz) no later than 3 days before the start of the race or in person at the place of the race at the information desk at the issue of numbers no later than 30 minutes before the start of the children's race. Later requests will not be taken into account and the competitor can only participate in the race in his category.

• It will be specified.