DateExpected
Late May 2027
Based on past editions. We'll confirm when the organiser announces.
Venue
Lake Youngs Watershed, Renton, Washington
Renton, King County
Countdown
May
A proper 100 miles made of ten 9.4-mile loops and a short out-and-back. About 2,700 m of climbing over that distance is gentle, so it's a test of patience more than hills.
Key facts
0110 loops of 9.4 miles plus a 6-mile out-and-back
02Course closes Sunday at 16:00
Create a free training plan for the Pigtails Challenge 161 km
7-day free trial, no card required
The course
One lap, on repeat
Renton · one lap
Distance161km
Total climb2,743m
Start · finishOne lap · elevation
0 kmDrag map to rotate14.6 km
Weather
Late-May, Renton
17°CTypical high
9°CTypical low
4°CColdest in 20 years
43%Days with rain
Highs around 17°C and lows around 9°C, but it has dropped to 4°C. Rain on 43% of days.
NASA POWER data, 2006-2025, the week either side of race day
2026 results
Who finishes, and how
#RiderTimeAvg speed
01Amy Mower22:34:037.1 km/h
02Jill Hudson28:51:435.6 km/h
03Lia Sterciuc28:51:445.6 km/h
4
Women finishers
1d 4:51:44
Median time
5.6 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
OrganiserNorthwest Endurance Events LLC
Running since2012
Training
Training for the Pigtails Challenge 161 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 Pigtails Challenge 161 km plan targets
Typical sessions
161 km with 2,743 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 Pigtails Challenge 161 km plan.
7-day free trial, no card required.
Other races at Pigtails Challenge
More events in May in United States
3/4 Minus CykelturExpected Early May 2027 · Sandpoint→Black Fork Gravel GrinderSat, 1 May 2027 · Glenmont→COWabunga! GravelExpected Early May 2027 · Viola→Juniper Canyon Half MarathonSat, 1 May 2027 · Herriman→Montana Gravel ChallengeExpected Early May 2027 · Huson→Sun Mountain 50M/50K/25KSat, 1 May 2027 · Winthrop→
