Devils Challenge - Čertovská výzva - 666 km
Hamr na Jezeře, Czechia • 30-6 May-Jun 2026
The Devils Challenge - Čertovská výzva - 666 km will take place in Hamr na Jezeře from Saturday 30 May 2026 to Saturday 6 June 2026. You can run between 66 and 666 kilometers. Visit the organization's website for the most recent information.
Race information
666 km
8 Stages Full Challenge
316 km
4 Stages (stages 5-8)
104 km
Stage 6: Peklo a Ráj
100 km
Stage 1: Čertovy Varhany
96 km
Stage 4: Do Jizerek
80 km
Stage 3: Lužický Okruh
79 km
Stage 5: Sklo a Pivo
75 km
Stage 2: Podještědská
67 km
Stage 8: Královská – Čertovskej Ultratrail
66 km
Stage 7: Ještědský Hřeben
Visit the organization's website for the most recent information.