Weld Your Mettle Running Festival

MAY
30-31
2026
Test your resilience on a scenic two mile dirt loop in Northern Colorado with distances ranging from 7k to 100 miles. Enjoy a festival atmosphere featuring glamping, saunas, cold plunges, and relay options for teams.
30-31 May 2026
7k Ruck (4.3 Miles) 7k Walk or Run (4.3 Miles... 14 Mile Full Marathon 50k

Always double-check with the organizer's website! This page may contain affiliate links.

Weld Your Mettle Running Festival

The Weld Your Mettle Running Festival takes place on a 146-acre private property in Eaton, Northern Colorado. The event features a 2-mile groomed dirt loop course designed in a horseshoe shape, providing views of Longs Peak. Participants have access to a fully stocked aid station at the start and finish of each loop, as well as a turnaround point at the two-mile mark.

The festival offers a wide variety of distances and formats:

  • 100 Mile, 100K, 50 Miles, 50k, and Full Marathon
  • 14 Mile and 7k walk or run (4.3 miles)
  • 7K Ruck (4.3 miles)
  • Relay Teams for 100 Mile, 100K, and 50 Mile distances (2-12 runners)
  • 36 Hour Timed Event
  • 36 Hour Virtual Race

The venue provides several onsite amenities for participants. Runners can stay in glamping tents equipped with queen beds and power, or use the provided self-camping area at no extra cost. The festival grounds include a sauna, cold plunges, a massage and stretch zone, and yoga sessions. Additional weekend activities include a movie screening, bonfires, and a dance party. Finishers receive a shirt and a medal, while those completing ultra-distances (over 26.2 miles) are awarded belt buckles. Visit the organization's website for the most recent information.

100 mi
100 Mile
100 mi
100 Mile Relay
100 km
100k
100 km
100k Relay
50 mi
50 Mile Relay
50 mi
50 Miles
50 km
50k
26 mi
Full Marathon
14 mi
14 Mile
4 mi
7k Ruck (4.3 Miles)
4 mi
7k Walk or Run (4.3 Miles)