DateExpected
Late September 2027
Based on past editions. We'll confirm when the organiser announces.
Venue
Reiterstadion Schänzli, Birsstrasse 11, 4132 Muttenz
Muttenz, Bezirk Arlesheim
Countdown
September
The full Gempen Grinder: 100 km of gravel and 2,300 m of climbing in one loop, with two feed zones and a Graveldrome finish to earn it.
Key facts
01Self-supported, so carry your own spares and repair kit
02Morning-wave starts
03Two feed zones on the loop
Create a free training plan for the Gempen Grinder 100 km
7-day free trial, no card required
The course
The route
Muttenz
Distance100km
Total climb2,300m
StartElevation
0 kmDrag map to rotate90.5 km
Weather
Late-September, Muttenz
18°CTypical high
8°CTypical low
1°CColdest in 20 years
40%Days with rain
Highs around 18°C and lows around 8°C, but it has dropped to 1°C. Rain on 40% of days.
NASA POWER data, 2006-2025, the week either side of race day
Results
Course verified. Results not yet available.
Organiser
Training
Training for the Gempen Grinder 100 km
We don't do generic plans. We combine deep knowledge of this race's demands with your recent training, then build a plan with you that progresses as you do.
Beina integrates directly with your existing tools to understand your current fitness, and synchronise your planned sessions.
Intervals.icuWhat a Gempen Grinder 100 km plan targets
Typical sessions
100 km with 2,300 m of climbing
Endurance and fatigue resistance over the full distance
Fuelling and pacing for the whole event
What your weeks look like
Typical sessions
Long endurance rides building toward the full distance
Threshold and sweet-spot work for sustained power
Sustained climbing repeats on real gradients
Group rides for drafting and bunch-riding skills
Not a generic schedule
Typical sessions
Built from your current fitness and the time you actually have
Adapts every week as Beina learns how you respond
Syncs your sessions straight to Garmin and Wahoo
One clear next session, never a wall of spreadsheet
Entries open now
Get your Gempen Grinder 100 km plan.
7-day free trial, no card required.
More events in September in Switzerland
SwissPeaks TrailExpected Early September 2027 · Le Bouveret→SwissPeaks UltraExpected Early September 2027 · Valais→Grächen BerglaufSat, 4 Sept 2027 · Grächen→Swiss Cycling AlpenbrevetExpected Early September 2027 · Andermatt→SwissPeaks MarathonExpected Early September 2027 · Valais→Trail du BessoExpected Early September 2027 · Grône→
