Pigtails Challenge

MAY
23-24
2026
A loop ultramarathon at Lake Youngs Watershed near Renton, WA, offering 50K to 200 mile options with 900 feet of climb per loop and repeated aid station support; 150 and 200 mile entries begin with an unsupported initial segment.
23-24 May 2026
200 miles 150 miles 100 miles 100 kilometers 50 kilometers

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Pigtails Challenge

Pigtails Challenge is an ultrarunning event held at Lake Youngs Watershed near Renton, WA. The course is a rolling loop with approximately 900 feet of elevation gain per loop. While the trail is not described as highly technical, the repeated elevation adds substantial cumulative climbing over multiple laps.

Distances offered:

  • 200 Mile
  • 150 Mile
  • 100 Miler
  • 100K
  • 50K

The 200- and 150-mile options include an initial unsupported portion that participants may complete independently; the final 100 miles for those distances take place on the loop course alongside the 100-mile field. The loop format means runners pass the same aid station repeatedly, and the course layout allows competitors to stop between laps if desired.

Event services include a main aid station with volunteers handling food and drink and a halfway aid station that is self-serve with water only. At the time of the event notice, participants and pacers must wear a neck buff and pull it up when entering the aid station area; only runners and pacers are allowed in the aid station area. Only fully vaccinated volunteers are permitted to cook or handle food. Runners are asked to have volunteers retrieve snacks rather than placing hands into communal bowls. These policies are subject to change. Visit the organization's website for the most recent information.

200 mi
200 Mile
150 mi
150 Mile
100 mi
100 Miler
100 km
100k
50 km
50k