June 5, 2027
June 5, 2027 Estimated date
Liberec Region
Trail
66.6 km
33.3 km
66.6 km, 33.3 km
Trail
Hamr na Jezeře, Liberecký kraj, Czech Republic
Registration and pricing
Čertovská výzva 666 km
- 5666 Kč
8 etap – jednotlivci – 5 666 Kč / osobu
- 8666 Kč
8 etap – dvojice – 8 666 Kč / dvojici
- 11666 Kč
8 etap – trojice – 11 666 Kč / trojici
- 4666 Kč
4 etapy – jednotlivci – 4 666 Kč / osobu
- 4666 Kč
4 etapy z 8 dle vlastního výběru – jednotlivci – 4 666 Kč / osobu
Estimated date. We have not received an official date for this race.
Race description
Čertovskej Ultratrail is an off-road run through the mountains, valleys, castles and waters of the mysterious Kokořínsko and Máchův kraj. The main route is 66.6 km, with beautiful scenery and well-stocked aid stations, and is also suitable for beginner ultramarathon runners. The race is part of the Ultracup series and is also the final stage of the 8-day, 666 km Čertovská Výzva. Runners can look forward to a friendly, family atmosphere and unforgettable experiences in scenic terrain.
Highlights
- Off-road route through the mountains, valleys, castles and waters of Kokořínsko and Máchův kraj
- Well-stocked aid stations along the route
- Scenic surroundings and a friendly, family atmosphere
Additional information
Runners must bring their own cup for drinks at the aid stations. A Čertovský running cup, T-shirt or socks can also be ordered. Race capacity is limited, and registration for the main race on 6.6.2026 is sold out, though places may become available before the event. Čertovská Výzva 666 km is an 8-day stage race with GPS trackers and online timing. The race is part of the UTMB Index Races, with the opportunity to earn ITRA points. Registration is sold out, capacity is limited, and the race offers a family atmosphere and bus transport to the start.
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