The Trisothon is an annual running and walking event in Tarascon, in the Bouches-du-Rhone department of southern France, held around World Down Syndrome Day. It offers road races over 5 km and 10 km, plus walking events, accommodating those seeking a short competitive run and those preferring an easier pace.
The routes are road courses in and around Tarascon, with refreshment stations and changing facilities provided. Trilogis organizes the event, raising funds for its work and focusing on disability inclusion. The event welcomes a broad range of participants: runners, walkers, children, adults, seniors, disabled and able-bodied individuals, clubs, companies, and community groups. The race has reached at least its tenth edition, establishing it as a recurring local event with published results and rankings.