Date
Sat, 1 May 2027
Start
05:30
Venue
Big Twin Lake Resort & Campground, Winthrop, Washington
Winthrop, Okanogan County
Countdown
May
The big one: a full 50 mile loop that starts before dawn and shares its first 18 and last 7 miles with the 50K, with plenty of quiet trail in between.
Key facts
01Shares the first 18 miles and last 7 miles with the 50K course
Create a free training plan for the Sun Mountain 50M/50K/25K 80 km
7-day free trial, no card required
The course
The route
Winthrop
Distance80km
Total climb2,499m
StartElevation
0 kmDrag map to rotate70.4 km
Weather
Early-May, Winthrop
11°CTypical high
-1°CTypical low
-6°CColdest in 20 years
26%Days with rain
Highs around 11°C and lows around -1°C, but it has dropped to -6°C. Rain on 26% 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
01Andrea Lin08:05:0110.0 km/h
02Stacey M Marion08:08:429.9 km/h
03Sarah Fenton08:17:459.7 km/h
34
Women finishers
11:30:30
Median time
7.0 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
Training
Training for the Sun Mountain 50M/50K/25K 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 Sun Mountain 50M/50K/25K 80 km plan targets
Typical sessions
80 km with 2,499 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
Hill reps and vert to prepare the climbs and descents
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 Sun Mountain 50M/50K/25K 80 km plan.
7-day free trial, no card required.
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