Date
Sat, 15 May 2027
Venue
Berryman Campground, Mark Twain National Forest, near Potosi, Missouri
Missouri
Countdown
May
One run around the Berryman loop in Missouri, the single-lap version of the 50-mile. A proper trail marathon with modest climbing, and a good way into longer trail distances.
Key facts
01One lap of the 26.4-mile loop, with no repeat
02Ranked by sex and age group
Create a free training plan for the Berryman Trail Races 42 km
7-day free trial, no card required
The course
The route
Missouri
Distance42km
Total climb762m
StartElevation
0 kmDrag map to rotate37.4 km
Weather
Mid-May, Missouri
24°CTypical high
12°CTypical low
1°CColdest in 20 years
41%Days with rain
Highs around 24°C and lows around 12°C, but it has dropped to 1°C. Rain on 41% of days.
NASA POWER data, 2006-2025, the week either side of race day
Results
Course verified. Results not yet available.
Organiser
OrganiserSt. Louis Ultrarunners Group
Websitestlouisultrarunnersgroup.com
Instagram@st.louis.ultrarunners.group
Running since2000
Training
Training for the Berryman Trail Races 42 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 Berryman Trail Races 42 km plan targets
Typical sessions
42 km with 762 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 Berryman Trail Races 42 km plan.
7-day free trial, no card required.
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