Events/Bighorn Trail 100

Bighorn Trail 100

Running
Date
Fri, 18 Jun 2027
Venue
Dayton, Wyoming (Bighorn Mountains)
Countdown
June
Distance
161km
Total climb
5,500m

A remote Rocky Mountain 100 defined not by altitude but by mud. Mid-June in Wyoming's Bighorn Mountains means wildflowers, lingering snowmelt and deep, slick trail underfoot.

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The course

The route

An out-and-back traverse of the Bighorn Mountains from Dayton, Wyoming: roughly 55% muddy high-meadow singletrack, 30% runnable jeep road, and steep wet crossings up to a high point near 9,000ft.

Weather

Mid-June, Dayton

23°CTypical high
9°CTypical low
-2°CColdest in 20 years
46%Days with rain

Highs around 23°C and lows around 9°C, but it has dropped to -2°C. Rain on 46% of days. Pack for the cold end, not the average.

NASA POWER data, 2006-2025, the week either side of race day
2025 results

Who finishes, and how

#RiderTimeGap
01Amanda Lewallen2:42:33.85
02Carrie Kruse2:48:33.73
03Maria Eckendorf2:49:21.72
40
Women finishers
7:55:15
Median time
Women · 2025 results, as published by the organiser.
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Training

Training for the Bighorn Trail 100

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.

GarminWahooPolarHammerheadIntervals.icu
Vertical, mud and cold
Typical sessions
Sustained climbs into the range, then long descents home, both on slick, quad-loading mud
The Wall: a steep, notoriously muddy climb that demands power-hiking and grip
Cold river and creek crossings from snowmelt, leaving you with wet feet for hours
Most of the field runs through the night in cold, exposed high country
What your weeks look like
Typical sessions
Big-vert mountain days building to 7 to 9 hours, targeting 1,500 to 3,000m of climbing
Back-to-back long weekends, a 7-hour Saturday then a 5-hour Sunday on tired legs
Downhill repeats and muddy descent runs to armour your quads for the way home
Wet-foot and sock-change rehearsals, plus power-hike pole repeats and night runs
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
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