Trail of the Towers 2026

The Trail des Tours 2026 (formerly Trail des Cerfs) is a one-day trail running event held from Montfort-l’Amaury that uses the trails of the Forêt domaniale de Rambouillet as its playground. The event is organised by Association Evasion Sport et Nature 78 (AESN78) and presents three primary race distances for a range of abilities. The longest course is a 40 km trail with significant on-course support and safety measures, while shorter 28 km and 15 km options offer lower elevation and more accessible formats.

The 40 km race starts at 07:00 on 31 May 2026 and includes aid stations, medical coverage and time cut-offs, with the shorter formats starting later (start times for those distances are not stated on the event page). The 15 km route is also offered for Nordic walking, making the event inclusive for walkers as well as runners. The event emphasises forest scenery and varied trail surfaces within the Rambouillet area and is promoted via the organiser’s website for registration and detailed information.