Logo

Weld Your Mettle Running Festival

Eaton, United States • 30-31 May 2026

The Weld Your Mettle Running Festival, held in Eaton, Colorado, is a multi-day event featuring a variety of running challenges for all levels. Participants can choose from solo or relay races lasting 3, 6, 9, 12, 24, or 36 hours, including a 100-mile ultra with a 36-hour limit. Unique formats like the 2x2x24 and 4x4x36 involve running or walking set distances every few hours over extended periods.

The course is a 4-mile out-and-back horseshoe loop with aid stations and crew access. Additional events include a 7K run or ruck and a kids' fun run. The festival offers camping, glamping, and community activities such as saunas, cold plunges, and live music, creating a spirited and supportive atmosphere. Visit the organization's website for the most recent information.

United States Colorado Eaton

Race information

Registration
36 km
36 Hour Solo
36 km
36 Hour Relay: 2-12 Runners
24 km
24 Hour Solo
24 km
24 Hour Relay: 2-12 Runners
100 mi
100 Mile Solo
12 km
12 Hour Relay: 2-9 Runners
12 km
12 Hour Solo
9 km
9 Hour Relay: 2-9 Runners
9 km
9 Hour Solo
6 km
6 Hour Solo
6 km
6 Hour Relay: 2-6 Runners
3 km
3 Hour Solo
3 km
3 Hour Relay: 2-3 Runners
7 km
7k Walk or Run (4.3 Miles)
7 km
7k Ruck (4.3 Miles)
4 mi
4x4x36 (run or Walk 4 Miles Every 4 Hours for 36 Hours)
2x2x24 (run or Walk 2 Miles Every 2 Hours for 24 Hours)
1 Mile Kids Fun Run
Visit the organization's website for the most recent information.
Trail runs nearby

Into The Hills Eltuck 10K

Bellvue - 26 mi from Eaton

The Into the Hills Eltuck 10k is a challenging trail race held at Lory State Park in Bellvue, Colorado. Part of a midweek summer trail series, this event features a hilly 10-kilometer course with approximately 1,700 feet of elevation gain, offering runners scenic mountain views. The race is designed..

Into The Hills Eltuck 5K

Bellvue - 26 mi from Eaton

The Into the Hills Eltuck 5K is a midweek trail race held at Lory State Park in Bellvue, Colorado. Part of a summer trail series, this event features a challenging course with a steep, quick climb and descent along the Homestead, Well Gulch, and Kimmons loop, offering about 700 feet of elevation gai..

NoCo Urban Ultra

Weld County - 11 mi from Eaton

The NoCo Urban Ultra will take place in Weld County from Friday 22 August 2025 to Saturday 23 August 2025. You can run between 50 and 100 miles.

Eltuck Valley 12K Trail Series

Bellvue - 26 mi from Eaton

The Eltuck Valley 12K is part of the Lory Summer Trail Series held at Lory State Park in Bellvue, Colorado. This midweek trail race series offers a range of distances from 5K to 12K, catering to both new and experienced trail runners. The August 26 race features a fast and flat 12K course along the..

Front Range Ultra Dayze

Loveland - 21 mi from Eaton

...

Front Range Ultra Dayze is an ultra-running festival held in Loveland, Colorado, featuring a variety of ultra-distance events including 50k, 100-mile, 200-mile, and timed races up to 100 hours. The course is a flat, fast 2-mile loop through Centennial Park and River’s Edge Natural Area, mostly on di..

Black Squirrel Half

Bellvue - 26 mi from Eaton

The Black Squirrel Half Marathon is a 13.5-mile trail race held in Lory State Park near Fort Collins, Colorado. Featuring approximately 2,000 feet of elevation gain and loss, the course offers a challenging yet accessible perimeter tour of the park with stunning views of Horsetooth Reservoir, Fort C..