Randonnee Castrum Viterbii

Randonnée Castrum Viterbii is a mountain-bike randonnée held on 20 September 2026 in Viterbo, in the Tuscia area of northern Lazio, Italy. Organised by ASD Tuscia Bikers MTB, the event starts from the Valle Faul parking area and offers three route options — long (L), short (S) and a dedicated gravel route (G) — open to MTB, e-MTB and gravel bikes. The course winds through the historic centre of Viterbo and out into the surrounding Tuscia countryside, including the archaeological area of Ferento. Riders must complete their chosen route by 14:00 in full self-sufficiency, with mandatory GPS and helmet.