São Mamede MTB Portalegre
The São Mamede BTT – Portalegre is a mountain bike event taking place on April 18 and 19, 2026, in Portalegre, Portugal. It features two routes: a 60 km Marathon and a 35 km Half-Marathon, held on dirt roads and single-tracks within the São Mamede Natural Park.
This event is open to all riders aged 16 and above for the Marathon and 14 and above for the Half-Marathon, including both conventional and electric mountain bikes. It is part of the Alentejo BTT 4Marathon Series, a circuit of four marathons with cumulative classification and awards for various categories and distances.
The race is non-competitive with free pace, marked with vertical signage, and supported by volunteers and medical emergency teams. Awards are given to top finishers in each category and to teams with the most participants and best times.









