Pigtails Challenge

About the Event

The Pigtails Challenge is a high-endurance loop race held at the Lake Youngs Watershed in Renton, Washington. Taking place from May 23 to May 24, 2026, the course consists of rolling loops, each providing 900 feet of elevation gain. While the terrain is not considered mountain-technical, the cumulative elevation presents a significant physical and mental hurdle, particularly for those attempting the 100-mile, 150-mile, or 200-mile distances. The race is designed to test a runner's perseverance, as the loop format provides constant opportunities to stop, making it a true test of mental fortitude.

Race Category	Total Elevation (Estimated)	Start Time	Time Limit
200 Mile / 150 Mile	18,000+ ft	Sat 06:00 AM*	Sun 04:00 PM
100 Miler	9,000 ft	Sat 06:00 AM	34 Hours
100 Kilometer	~5,600 ft	Sat 06:00 AM	34 Hours
50 Kilometer	~2,800 ft	Sun 06:00 AM	10 Hours

The Pigtails Challenge is particularly well-suited for runners looking to transition to longer distances due to its high level of logistical support. Participants can manage their own gear and nutrition at the start/finish area of each loop, reducing the need for complex crew support found in point-to-point mountain races.

Logistics and Participant Information:

-- Multi-Day Ultra Strategy: For the 200 and 150-mile categories, runners complete the initial 100 or 50 miles independently (unsupported) before joining the official 100-mile start on Saturday morning.
-- Loop Course Dynamics: The repetitive nature of the course allows for easy access to aid and amenities, but serves as a mental trap for those struggling with the "option to throw in the towel" at every lap.
-- Strict Cut-offs: While the 100K and 100-mile participants have a generous 34-hour window, all race activities must conclude by 4:00 PM on Sunday.
-- Registration Deadline: Online entries via UltraSignup close on Friday, May 22, 2026, at 11:59 PM PT.
-- Location and Access: The event is staged at 16640 SE Old Petrovitsky Road in Renton, offering a rolling, non-technical trail surface that is ideal for maintaining a consistent pace.
-- Support and Amenities: Known for being a "very well supported race," it provides a safe environment for those attempting their first century-distance run.

water_drop Avg rainfall

2.1 mm

ac_unit Avg snowfall

—

air Avg wind speed

9.4 km/h (Light breeze)

opacity Sweat loss rate

Low

terrain Course conditions

Firm and slightly soft

sunny Max UV Index

Moderate (4.2)

humidity_mid Humidity

74.0%

wb_twilight Sunrise

05:30

nightlight Sunset

20:39

About Renton

Learn more about the host city, Renton.

Renton is a city in King County, Washington south of Bellevue and north of Kent. It is a quiet suburb of Seattle at the base of Lake Washington. Renton is primarily known as the site of the Boeing 737 plant, where the popular commercial jetliner is built. Renton is also notable for being the resting place of rock legend Jimi Hendrix.