DateExpected
Mid September 2027
Based on past editions. We'll confirm when the organiser announces.
Venue
Karlsplatz, Heidelberg
Heidelberg, Baden-Württemberg
Countdown
September
The way into the day: 20 km with just under 1,000 m of climbing. A friendly first trail race, and the busiest of the three distances.
Key facts
01Mass start in blocks from Karlsplatz
0216:30 cut-off
03Latest published rule: born 2008 or earlier
Create a free training plan for the Trail Marathon Heidelberg 20 km
7-day free trial, no card required
The course
The route
Heidelberg
Distance20km
Total climb968m
StartElevation
0 kmDrag map to rotate20.3 km
Weather
Mid-September, Heidelberg
21°CTypical high
10°CTypical low
2°CColdest in 20 years
35%Days with rain
Highs around 21°C and lows around 10°C, but it has dropped to 2°C. Rain on 35% of days.
NASA POWER data, 2006-2025, the week either side of race day
Results
Course verified. Results not yet available.
Organiser
OrganiserM3 Marathon Mannheim Marketing GmbH & Co. KG
Instagram@trailmarathonheidelberg
Running since2013
Training
Training for the Trail Marathon Heidelberg 20 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 Trail Marathon Heidelberg 20 km plan targets
Typical sessions
20 km with 968 m of climbing
Time on feet and fatigue resistance
Fuelling and pacing for the whole event
What your weeks look like
Typical sessions
Long runs that build time on your feet
Tempo and threshold sessions to hold race pace
Back-to-back weekend runs for fatigue resistance
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 Trail Marathon Heidelberg 20 km plan.
7-day free trial, no card required.
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