Čertovská 5 is a December winter run in and around Unhošť in the Central Bohemian Region, starting from the Sokolovna on Melicharova Street. The race is short and straightforward: about 5.7 kilometers, with the first start at 10:00 and the finish expected within roughly an hour.
The route partly follows the Neumann Trail, but it is much shorter and less rugged than that trail, so it works as a local winter race rather than a tough trail outing. TJ Sokol Unhošť organizes it, runners are invited to wear devil masks, and the morning ends with a gathering and the Sokol Cup awards.