La Pota-Roja Cervelló is a trail running and mountain bike event held in Cervelló, near Barcelona. It offers six distances in one morning: 8, 14, 24, and 42 km trail runs, alongside 20 and 35 km BTT routes. Even the shorter trail races involve significant climbing; the 8K features 263 m of positive elevation gain, and the 14K has 546 m.
The longer trail distances increase the challenge considerably, with 1,114 m of ascent for the 24K and 1,925 m for the marathon. The event takes place on natural terrain surrounding Cervelló, close to Barcelona, attracting both trail runners and MTB enthusiasts over road cyclists. The town has supported the event since its inception, and participants note its good organization, enjoyable routes, and high-quality courses.