The Duathlon de Meaux - Nanteuil-lès-Meaux is a run-bike-run race held in Seine-et-Marne, east of Paris, within the Île-de-France region. The primary S format covers 27.5 km and is open to solo participants or teams, accommodating both individual endurance and shared effort.
A duathlon involves an initial run, followed by a cycle, and concludes with a final run, requiring a distinct pacing strategy compared to a standard road race.
Les Tritons Meldois are the organizers, and previous events have attracted over 400 participants, including a significant number of individuals not affiliated with clubs. One documented course began at the Museum of the Great War in Meaux, utilizing a loop design, with separate starts for men and women. Meaux train station is less than 3 km from the race venue, offering convenient access without a vehicle. Youth categories have been part of the event's history, although some are not currently offered or are pending reinstatement.