I Ultra Maratona BTT/Gravel do Sor

The I Ultra Maratona BTT/Gravel do Sor is a bike marathon held at the Zona Ribeirinha in Ponte de Sor, located in Portugal's Portalegre district. It takes place in September, a month when local temperatures typically reach highs of about 31°C and lows of 18°C, with minimal rainfall. Riders have a choice between a 42.2 km route and a 120 km BTT option. This offers both a marathon-distance gravel ride and a longer mountain-bike course. Sign-ups are managed via apedalar.pt, and the organizer posts the race rules and participant list online.