TT Marathon Assen takes place on Sun, Nov 1, 2026 in Assen, Netherlands. The main route is 42.2 km.
- Date
- Sun, Nov 1, 2026
- Start
- Assen 🇳🇱
- Distance
- 42.2 km
- Level
- Open to all
Toe the line at TT Marathon Assen in your best shape
A training plan built around your fitness and this race, adapted every day as your form changes. Attach the course and it prepares for the climbs too.
Start freeFree to start · No credit card
Marathon that starts on the TT Circuit Assen, home of the MotoGP Dutch TT, and runs through the Drenthe forests and countryside to a finish in the centre of Assen. Start 09:30, capped at 2,500 runners across both distances.
What would it take you?
Pick the level closest to yours for an estimate of finish time on this course and the training a solid preparation needs.
Estimated finish
3:45–4:30
Peak-week training
5–7 h/week
A model estimate from distance, climbing and level, not a promise. Conditions, drafting and pacing move it.
IntervalCoach turns those weekly hours into a concrete plan built around your actual fitness. Start with this race as your goal
Frequently asked questions
When is TT Marathon Assen?
TT Marathon Assen takes place on Sun, Nov 1, 2026 in Assen, Netherlands.
How long is TT Marathon Assen?
The main route is 42.2 km.
Who is TT Marathon Assen for?
TT Marathon Assen is open to all participants.
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