Date
Sat, 9 Jan 2027
Start
22:00
Venue
Trail Center, St
Trail Center, Monroe County
Countdown
January
A winter fat bike ride that starts at 22:00 and runs through the night, with a stop to boil water at the checkpoint. Your survival kit matters as much as your legs.
Key facts
01Mandatory kit: sleeping bag, bivy, pad, stove, fuel, lights, reflective gear, food
02Mile-24 checkpoint closes at 03:00 Sunday
03Finish cutoff is 10:00 Sunday, 12 hours for riders
Create a free training plan for the St. Croix 40 Winter Ultra: 40 Miler Fat Bike
7-day free trial, no card required
The course
One lap, on repeat
Trail Center · one lap
Distance64km
Start · finishOne lap · elevation
0 kmDrag map to rotate30.4 km
Weather
Early-January, Trail Center
24°CTypical high
17°CTypical low
-1°CColdest in 20 years
23%Days with rain
Highs around 24°C and lows around 17°C, but it has dropped to -1°C. Rain on 23% of days. Pack for the cold end, not the average.
NASA POWER data, 2006-2025, the week either side of race day
Results
Course verified. Results not yet available.
Organiser
OrganiserNorthern Wanderer LLC
Websitestcroixwinterultra.com
Instagram@stcroixwinterultra
Running since2019
Training
Training for the St. Croix 40 Winter Ultra: 40 Miler Fat Bike
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 St. Croix 40 Winter Ultra: 40 Miler Fat Bike plan targets
Typical sessions
64 km
Endurance and fatigue resistance over the full distance
Fuelling and pacing for the whole event
What your weeks look like
Typical sessions
Long endurance rides building toward the full distance
Threshold and sweet-spot work for sustained power
Terrain and skills practice specific to the course
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 St. Croix 40 Winter Ultra: 40 Miler Fat Bike plan.
7-day free trial, no card required.
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