The Cursa de l'Alba begins and ends in Collbató, located at the base of Montserrat, directing participants into the Natural Park of Montserrat. This mountain trail series offers three distances: the 42 km Marató de Montserrat, the 22 km Cursa de l'Alba, and the 12 km MitjAlba. The event now takes place in autumn, with the middle-distance race serving as the program's traditional core: 22 km featuring 1,200 meters of ascent, 1,200 meters of descent, four aid stations, and a 4 hour 30 minute cut-off.
The 22 km course ascends to Sant Jeroni, Montserrat's highest point, then descends toward Collbató via technical trails, rocky paths, and tracks. The shorter MitjAlba route reaches Pla de San Miquel, offering participants a scaled-down version of the mountain environment. Approximately 400 individuals compete in the 22 km race, attracting trail runners seeking a challenging local mountain course over a flat, large-scale event. This race is part of the Memorial Martí Gil and is organized by 4000 Peus - Associació Excursionista Collbató, contributing to its status as a well-established event on the Catalan trail running calendar.