TT Marathon Assen – Half Marathon takes place on Sun, Nov 1, 2026 in Assen, Netherlands. The main route is 21.1 km.
- Date
- Sun, Nov 1, 2026
- Start
- Assen 🇳🇱
- Distance
- 21.1 km
- Level
- Open to all
Toe the line at TT Marathon Assen – Half Marathon 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
Half marathon from the TT Circuit Assen, home of the MotoGP Dutch TT, through city districts and Drenthe forest to a finish in the centre of Assen. Start 10:45, run alongside the full TT Marathon.
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
1:45–2:10
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 – Half Marathon?
TT Marathon Assen – Half Marathon takes place on Sun, Nov 1, 2026 in Assen, Netherlands.
How long is TT Marathon Assen – Half Marathon?
The main route is 21.1 km.
Who is TT Marathon Assen – Half Marathon for?
TT Marathon Assen – Half Marathon is open to all participants.
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