Trail Ribeira de Limas is a trail race in Serpa, Beja District, Portugal, offering 17 km or 31 km distances. It takes place around mid-February and maintains a straightforward format: both are single-loop trail races. The 31 km is the longer option, while the 17 km route is the more frequently chosen distance.
The course follows preserved nature paths near Serpa, presenting a countryside trail experience. The race organizers suggest nearby Moura, Mertola, the Alqueva dam and lake, and local vineyards as points of interest, reflecting the Alentejo region's character. A race weekend here can extend to exploring old towns, open water, and wine tasting after the run.