La Hallonienne takes place on Mon, Mar 29, 2027 in Grand-Halleux, Belgium. The main route is 45 km.
- Date
- Mon, Mar 29, 2027
- Start
- Grand-Halleux 🇧🇪
- Distance
- 45 km
- Level
- Open to all
Your 23-week plan to La Hallonienne
The Base 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.
Build my planFree to start · No credit card
La Hallonienne is an Easter Monday mountain-bike marathon in Grand-Halleux and the opening round of the Belgian Ardennes Marathon Series, with 80, 45, 25 and 15 km routes.
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
1:20–1:35
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 La Hallonienne is 23 weeks away. This is how a coach divides that time. The first phase starts now.
01Base11 weeks · Oct 20, 2026 – Jan 4, 2027
Aerobic foundation: mostly steady endurance work that grows the aerobic engine and the durability the later phases stand on.
02Build6 weeks · Jan 5, 2027 – Feb 15, 2027
Progressive overload: training load climbs in waves, with harder weeks stacked on the base and planned recovery weeks that let the gains land.
03Peak3 weeks · Feb 16, 2027 – Mar 8, 2027
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
04Taper2 weeks · Mar 9, 2027 – Mar 22, 2027
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
05Race week1 week · Mar 23, 2027 – Mar 29, 2027
Openers, rest and logistics. The work is done; the job now is arriving fresh.
Frequently asked questions
When is La Hallonienne?
La Hallonienne takes place on Mon, Mar 29, 2027 in Grand-Halleux, Belgium.
How long is La Hallonienne?
The main route is 45 km.
Who is La Hallonienne for?
La Hallonienne is open to all participants.
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