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Gempen Grinder

Gempen Grinder takes place on Sat, Sep 25, 2027 in Muttenz, Switzerland. The main route is 100 km.

Date
Sat, Sep 25, 2027
Start
Muttenz 🇨🇭
Distance
100 km
Level
Open to all
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Your 49-week plan to Gempen Grinder

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 plan

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A gravel event near Basel on hardpack gravel, forest roads and singletrack through the Jura hills, starting at the Schänzli stadium in Muttenz, with a short and a long route on the Saturday.

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

3:00–3:35

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 Gempen Grinder is 49 weeks away. This is how a coach divides that time. The first phase starts now.

  1. 01Base37 weeks · Oct 18, 2026 – Jul 3, 2027

    Aerobic foundation: mostly steady endurance work that grows the aerobic engine and the durability the later phases stand on.

  2. 02Build6 weeks · Jul 4, 2027 – Aug 14, 2027

    Progressive overload: training load climbs in waves, with harder weeks stacked on the base and planned recovery weeks that let the gains land.

  3. 03Peak3 weeks · Aug 15, 2027 – Sep 4, 2027

    The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.

  4. 04Taper2 weeks · Sep 5, 2027 – Sep 18, 2027

    Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.

  5. 05Race week1 week · Sep 19, 2027 – Sep 25, 2027

    Openers, rest and logistics. The work is done; the job now is arriving fresh.

Get this plan built around your own fitness

Frequently asked questions

When is Gempen Grinder?

Gempen Grinder takes place on Sat, Sep 25, 2027 in Muttenz, Switzerland.

How long is Gempen Grinder?

The main route is 100 km.

Who is Gempen Grinder for?

Gempen Grinder is open to all participants.

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