RunForestRun Indian Summer Ultra (10th edition) takes place on Sat, Oct 10, 2026 in Gasselte, Netherlands. The main route is 100 km.
- Date
- Sat, Oct 10, 2026
- Start
- Gasselte 🇳🇱
- Distance
- 100 km
- Level
- Open to all
Toe the line at RunForestRun Indian Summer Ultra (10th edition) 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.
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The 10th-edition Indian Summer Ultra, RunForestRun's long-distance trail from Gasselte through Drenthe's autumn forests. 100 / 75 / 50 km.
What this race demands
This 100-kilometer trail ultramarathon through autumn forests demands sustained cardiovascular endurance and prolonged time-on-feet.
Aerobic Endurance
Covering 100 kilometers on foot requires an exceptionally high volume of steady-state aerobic output and cardiovascular conditioning.
Musculoskeletal Durability
The ultra-distance format subjects joints and connective tissue to continuous impact over many hours of continuous running and walking.
Given the extended duration well beyond 2.5 hours, athletes must ingest 60 to 90 grams of carbohydrates per hour to sustain energy levels.
Frequently asked questions
When is RunForestRun Indian Summer Ultra (10th edition)?
RunForestRun Indian Summer Ultra (10th edition) takes place on Sat, Oct 10, 2026 in Gasselte, Netherlands.
How long is RunForestRun Indian Summer Ultra (10th edition)?
The main route is 100 km.
What does RunForestRun Indian Summer Ultra (10th edition) demand?
This 100-kilometer trail ultramarathon through autumn forests demands sustained cardiovascular endurance and prolonged time-on-feet.
Who is RunForestRun Indian Summer Ultra (10th edition) for?
RunForestRun Indian Summer Ultra (10th edition) is open to all participants.
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