Nemanice hosts this Trail Running Cup event in Český les, near the Czech-German border, featuring a half-marathon-distance trail race as its primary offering. The Půlmaraton Český les takes place in October, providing two options: a 21 km race with 520 meters of elevation gain, and a 7 km route with 80 meters of elevation gain. The 21 km race begins at 11:00, and the 7 km race starts at 12:00, with parking available at the start/finish area. This is a cross/trail race, not a road half marathon, meaning elevation and terrain are as significant as the distance.
The 21 km course includes aid stations at approximately 4, 9, 14, and 19 km. The 7 km course has an aid station around 4 km. GPX files for both routes are accessible for participants who wish to preview the course. The 21 km race recognizes overall male and female winners, along with age categories ranging from younger adults up to 70+ for men and 55+ for women. The 7 km race awards the top three male and top three female finishers. The course is described as a Czech-German half marathon through natural landscapes, with the organizer highlighting the history of lost villages in the border region. Post-race refreshments consist of water, electrolyte drinks, and light fare like salad or risotto.