Trilhos Termais begins and ends at Parque das Termas de São Jorge in Caldas de São Jorge, a thermal village in Santa Maria da Feira. It offers three options: a 13K Short Trail, a 20K Long Trail for more competitive runners, and a 6K walk for those seeking a relaxed nature outing with friends.
The routes follow natural trails around Caldas de São Jorge and the Santa Maria da Feira region. The event is structured around both competition and recreation, with Senior and Veterans categories providing a formal race framework. The walk and shorter trail accommodate mixed abilities. The event also emphasizes community involvement and healthy living, welcoming participants beyond just fast trail runners.