DateExpected
Early October 2027
Based on past editions. We'll confirm when the organiser announces.
Venue
Fürstenbergerhof, Steinrücken 5, 77736 Zell am Harmersbach
Unterharmersbach, Ortenaukreis
Countdown
October
The main 20 km trail run of the day, with 710 m of climbing that keeps it honest without being brutal. Three aid stations make it a very doable autumn outing.
Key facts
01Open to runners born 2006 or earlier (the registration page says 2007)
02Three aid stations on course
03No cut-off stated
Create a free training plan for the TrailRUN21 & TrailRUN Light: TrailRUN21
7-day free trial, no card required
The course
The route
Unterharmersbach
Distance20km
Total climb710m
StartElevation
0 kmDrag map to rotate19.9 km
Weather
Early-October, Unterharmersbach
17°CTypical high
8°CTypical low
1°CColdest in 20 years
45%Days with rain
Highs around 17°C and lows around 8°C, but it has dropped to 1°C. Rain on 45% of days.
NASA POWER data, 2006-2025, the week either side of race day
Results
Course verified. Results not yet available.
Organiser
OrganiserTV 1898 Unterharmersbach e.V.
Websitet-resa5.wixsite.com
Instagram@trailrun21
Running since2015
Training
Training for the TrailRUN21 & TrailRUN Light: TrailRUN21
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 TrailRUN21 & TrailRUN Light: TrailRUN21 plan targets
Typical sessions
20 km with 710 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 TrailRUN21 & TrailRUN Light: TrailRUN21 plan.
7-day free trial, no card required.
Other races at TrailRUN21 & TrailRUN Light
More events in October in Germany
Oberaudorf Trail FestivalExpected Early October 2027 · Oberaudorf→Black Forest Trailrun MastersExpected Early October 2027 · Elzach→BurgentrailExpected Early October 2027 · Ostheim vor der Rhön→Neudorfer FichtelberglaufSat, 2 Oct 2027 · Oberwiesenthal→Prenzlauer HügelmarathonSat, 2 Oct 2027 · Prenzlau→Taubertal 100Expected Early October 2027 · Rothenburg ob der Tauber→
