Sunday, September 6, 2026 · Grotte di Castro, Italy
Distances
25.8 km
About this race
Triathlon della Tuscia is a sprint triathlon in the Viterbo area of Lazio, Italy, with the race listed for Grotte di Castro in early September. It is a short-format race of 25.8 km, built around the standard order of swim, road bike, and road run. The swim uses local lake or pond water, while the bike and run stay on roads, so it suits athletes who want a compact triathlon rather than a long day out. The organizers describe the sprint distance as one that works for many people: accessible enough to enter, but still hard enough to demand proper effort.
The event sits close to the lakefront, and a previous edition was staged in Montefiascone by Bar Onassis, with athletes arriving with checked bikes and the water in front of them. Elite, Senior, Master, Under 23, Junior, and YB athletes can all line up, so the field is broader than a beginner-only event. Transitions matter here because the race is short, and lost seconds between swim, bike, and run can change the feel of the day. ASD Green Hill organizes the race, and it is part of the first Etruscan Athlon circuit, giving the series a new regional identity within Lazio triathlon.