Challenge Lisboa Triathlon

Middle-distance triathlon starting with a swim in the warm waters of the Tagus estuary near Cascais, followed by a scenic cycle through the palaces of Sintra and Estoril, finishing with a run along Cascais waterfront promenade. Part of the prestigious international Challenge series, the race attracts elite and age-group triathletes from around the world to one of Europe's most beautiful triathlon courses.