Eleven Trail Český ráj is a trail running event held in Branžež, Bohemian Paradise, starting at Komárovský pond and taking place in September. Participants can select from 6 km, 11.5 km, or 21 km races. The event also features children's races and canicross options over 3.3 km and 6.6 km.
The course crosses Bohemian Paradise, leading past pine forests, sandstone formations, and the grounds of Kost Castle. The 21 km race follows the established Eleven Půlmaraton Český ráj route. A maximum of 500 runners are permitted. The top three finishers in each category will receive prizes from sponsors and partners.