Hammerstone takes place on Oct 18 – 20, 2026 in Valkenburg, Netherlands. The main route is 105 km.
- Date
- Oct 18 – 20, 2026
- Start
- Valkenburg 🇳🇱
- Distance
- 105 km
- Climbing
- 2,200 m
- Level
- Open to all
Your 3-week plan to Hammerstone
The Taper phase starts this week. Built around your fitness and adjusted every day as your form changes; attach the course and it prepares for the climbs too.
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Hammerstone is a three-day mountain bike festival based in Valkenburg that features a challenging XCM marathon course through the South Limburg and Voerstreek regions.
What this race demands
Hammerstone is a 105 km mountain bike marathon featuring 2,200 meters of elevation gain across the South Limburg and Voerstreek regions, demanding sustained climbing power and technical descending over several hours.
Climbing volume
Accumulating 2,200 meters of elevation over 105 km requires consistent power output on sustained ascents and the muscular endurance to repeat efforts across the three-day festival format.
Technical durability
Navigating the varied terrain of the South Limburg and Voerstreek regions on a mountain bike demands upper-body resilience and bike-handling precision to manage fatigue late in the distance.
Given the duration of a 105 km mountain bike marathon, athletes should target 60 to 90 grams of carbohydrates per hour to maintain energy output throughout the event.
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
5:00–6:05
Peak-week training
6–8 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
Your road to race day
Race day at Hammerstone is 3 weeks away. This is how a coach divides that time. The first phase starts now.
01Taper2 weeks · Sep 28, 2026 – Oct 11, 2026
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
02Race week1 week · Oct 12, 2026 – Oct 18, 2026
Openers, rest and logistics. The work is done; the job now is arriving fresh.
Frequently asked questions
When is Hammerstone?
Hammerstone takes place on Oct 18 – 20, 2026 in Valkenburg, Netherlands.
How long is Hammerstone?
The main route is 105 km.
What does Hammerstone demand?
Hammerstone is a 105 km mountain bike marathon featuring 2,200 meters of elevation gain across the South Limburg and Voerstreek regions, demanding sustained climbing power and technical descending over several hours.
How much climbing does Hammerstone have?
Hammerstone has 2,200 m of climbing.
Who is Hammerstone for?
Hammerstone is open to all participants.
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