TT Marathon Assen

TT Marathon Assen is the second edition of a point-to-point marathon and half marathon in Assen, the capital of the Dutch province of Drenthe, held on Sunday, November 1, 2026. The marathon starts with a full lap of the TT Circuit Assen, the circuit that hosts the annual Dutch TT motorcycle race, before the route heads out through the city and surrounding countryside to Rolde, site of the original 1925 Dutch TT, and Hooghalen, home to the circuit used from 1926 to 1954, then returns to finish on Torenlaan in central Assen. The half marathon, starting later on the same course, covers 21.1 km. The inaugural TT Marathon was originally scheduled for June 21, 2025, but was postponed to November 16, 2025 because of extreme heat; that first running drew about 1,500 marathon finishers among roughly 6,500 participants across the connected TT City Run weekend, prompting organizers to make the marathon an annual fixture. The 2026 field is capped at 2,500 runners. Registration is open through the organizer's site, tt-marathon.nl, via the Atleta platform, with entry priced at €79 for the marathon and €45 for the half marathon; runners who register before August 15 are guaranteed an event shirt, and both distances carry a six-hour time limit.