Date
Sat, 20 Mar 2027
Start
07:00
Venue
Horse Campground, Owen-Putnam State Forest, Poland, Indiana
Poland, Clay County
Countdown
March
The big one: three full loops of the course, then an 8-mile finishing loop to cap off 80 km. A long day on the trails with a small field.
Key facts
01Carry 20 oz of water at all times; it's a cupless race
02Three full course loops, then an 8-mile finishing loop
Create a free training plan for the OPSF 50/50 Trail Race Challenge 80 km
7-day free trial, no card required
The course
One lap, on repeat
Poland · one lap
Distance80km
Start · finishOne lap · elevation
0 kmDrag map to rotate21.4 km
Weather
Mid-March, Poland
12°CTypical high
0°CTypical low
-10°CColdest in 20 years
36%Days with rain
Highs around 12°C and lows around 0°C, but it has dropped to -10°C. Rain on 36% of days. Pack for the cold end, not the average.
NASA POWER data, 2006-2025, the week either side of race day
2026 results
Who finishes, and how
#RiderTimeAvg speed
01Monika Tilmans10:27:327.7 km/h
02Polly Launay14:50:105.4 km/h
03Valerie Ball14:50:465.4 km/h
3
Women finishers
14:50:10
Median time
5.4 km/h
Median speed
Women · 2026 results, as published by the organiser.
How fast could you finish?
Get a prediction based on your recent training
Organiser
OrganiserIndiana Trail Running Association (ITRA)
Websiteopsf5050.com
Instagram@indianatrailrunning
Running since1993
Training
Training for the OPSF 50/50 Trail Race Challenge 80 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 OPSF 50/50 Trail Race Challenge 80 km plan targets
Typical sessions
80 km
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 OPSF 50/50 Trail Race Challenge 80 km plan.
7-day free trial, no card required.
Other races at OPSF 50/50 Trail Race Challenge
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