Pigtails Challenge

MAY
27-30
2027
Loop ultramarathon at Lake Youngs Watershed near Renton, WA offering 50k to 200 mile options on a 9.4 mile loop with 900 ft elevation per loop.
27-30 May 2027
200 miles 150 miles 100 miles 100 kilometers 50 kilometers

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Pigtails Challenge at Lake Youngs Watershed, Renton WA

The Pigtails Challenge is a loop-based ultramarathon held at Lake Youngs Watershed. The course is a well-groomed 9.4 mile loop with about 900 feet of elevation gain per loop. The trail is multi-use and shared with walkers, bikers, and horses; runners are asked to make noise when approaching horses from behind and to slow to a walk when passing.

Distances and entry fees:

  • 200 miles Entry fee $240
  • 150 miles Entry fee $195
  • 100 miles Entry fee $155
  • 100k Entry fee $125
  • 50k Entry fee $75

Loop details vary by distance. The longest event includes multiple loops plus an extra out-and-back section; shorter distances combine full loops with shorter out-and-back segments to reach their target mileage. The course does not cross any roads and includes a short asphalt section of about 20 yards.

Support and logistics include an aid station at the start/finish and a halfway aid station that may be unmanned, drop bags allowed only at the start/finish, and crews welcomed at the start/finish area. Pacers are permitted but limited to two at a time; muling is not allowed. Participants must complete a medical history form and bring the filled form when picking up their bib.

All participants receive a branded neck tube. Finishers of the 200, 150, 100, and 100k events receive belt buckles; 50k finishers receive a medal. Parking is available at the start/finish with overflow at the Renton Christian Center; temporary camping rules apply for tents and pop up campers. Visit the organization's website for the most recent information.

Events nearby

A six hour loop race at Nolte State Park on a 1.4 mile crushed gravel and packed dirt course, fee waived with optional donations supporting the Washington Trail Association.
A community 5K in Tacoma on 11/15/2026 that honors veterans and partners with Project Recover to raise awareness about missing service members.
Trail races at Squak Mountain in Issaquah with 10k, half and 26.2 mile options, aid stations every 3 miles, long sleeve technical T shirt and finisher medal included.
Forest trail run at Ravenna Park on November 21, 2026 offering 4k, 8k and 12k on a 4.1 km loop with an aid station and a youth discount.
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