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
The easiest way into the Pigtails weekend: a 50k of three 9.4-mile loops and a short out-and-back, with only 823 m of climbing. A friendly first ultra.
Key facts
013 full 9.4-mile loops plus a 3-mile out-and-back
02Course closes Sunday at 16:00
Create a free training plan for the Pigtails Challenge 50 km
7-day free trial, no card required
The course
One lap, on repeat
Renton · one lap
Distance50km
Total climb823m
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
42%Days with rain
Highs around 17°C and lows around 9°C, but it has dropped to 4°C. Rain on 42% of days.
NASA POWER data, 2006-2025, the week either side of race day
2026 results
Who finishes, and how
#RiderTimeAvg speed
01Amanda Rasmussen05:33:239.0 km/h
02Anna Weaver06:18:397.9 km/h
03Jess Mullen06:19:177.9 km/h
12
Women finishers
6:36:09
Median time
7.6 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 50 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 50 km plan targets
Typical sessions
50 km with 823 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 Pigtails Challenge 50 km plan.
7-day free trial, no card required.
Other races at Pigtails Challenge
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