Čertovská výzva 666 km
Hamr na Jezeře, Czechia • 30-6 May-Jun 2026
The 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
12082 m+
Total – 666 Km
314 km
6613 m+
Stages 5–8 Total (4 Stages)
105 km
1204 m+
Stage 2 – Peklo a Ráj
101 km
1134 m+
Stage 5 – Čertovy Varhany
89 km
1325 m+
Stage 1 – Kokořínská
82 km
1200 m+
Stage 3 – Sklo a Pivo
80 km
1957 m+
Stage 6 – Lužický Okruh
76 km
1719 m+
Stage 4 – Podještědská
67 km
1625 m+
Stage 8 – Královská – Čertovskej Ultratrail
66 km
1897 m+
Stage 7 – Ještědský Hřeben
Visit the organization's website for the most recent information.