Weld Your Mettle Running Festival

June 5th 2027
Windsor, CO
36 Hours | 50 KM | 50 Miles | 100 KM | 100 Miles

Join us for four days of running excitement! Whether you're tackling the timed events individually or teaming up for relays: 3, 6, 9, 12, 24 or 48-hour formats, or taking on a 7K Run or Ruck, 2x2x24 or 4x4x48- there's an event for everyone. Experience the thrill of friendly competition and the energy of a supportive community!

Relax in luxurious Glamping Tents or set up your own campsite, and enjoy access to a sauna, cold plunges, entertainment, food, drinks, and the race itself. Catch the run.Wild movie screening, bon fires and more throughout the weekend! With a full schedule of activities, there's something for everyone—whether you're joining us for the race, the fun, or both. The event takes place on a beautiful 146-acre private property in Northern Colorado, featuring a 2-mile groomed dirt loop course with breathtaking views of Longs Peak. Bring your friends or family and make a weekend of it!

Entry into this race is more than a one day event. It's an invitation to change your life, challenge your excuses, dig deep and WELD YOUR METTLE. 

Upcoming Races

Jun 5 2027
36 Hours
Multiple Loop
1 Elevation Rating
Flat or nearly flat
2 Surface Rating
Mostly groomed trail or dirt roads
Jun 5 2027
50 KM
3 Elevation Rating
Hilly, ~2500-7500 feet in 50 miles
3 Surface Rating
Some rocks, root, and/or ruts
Jun 5 2027
50 Miles
This 4 mile "loop" is made up of an out and back on a 2 mile groomed dirt path, with access to crew and a fully stocked food tent at the start of each loop and at the turnaround (at mile 2).
Multiple Loop
1 Aid Stations
1 Elevation Rating
Flat or nearly flat
2 Surface Rating
Mostly groomed trail or dirt roads
Jun 5 2027
100 KM
Multiple Loop
1 Elevation Rating
Flat or nearly flat
1 Surface Rating
Paved or very smooth surface
Jun 5 2027
100 Miles
This 4 mile "loop" is made up of an out and back on a 2 mile groomed dirt path, with access to crew and a fully stocked food tent at the start of each loop and at the turnaround (at mile 2).
Multiple Loop
1 Aid Stations
36:00 Cutoff
1 Elevation Rating
Flat or nearly flat
2 Surface Rating
Mostly groomed trail or dirt roads

Additional Distances

This event also has the following sub ultra distances

3 Hours 26.2 Miles 7 KM 14 Miles

Results

36 Hours

Date Finishers Top Result (F) Top Result (M)
05/30/26 Results Not Available Submit Results
Date Finishers Top Result (F) Top Result (M)
05/30/26 15 4:06:28 4:07:37
05/27/23 15 4:51:40 4:26:36
05/28/22 13 5:07:36 4:27:54
Date Finishers Top Result (F) Top Result (M)
05/30/26 5 20:42:01
Date Finishers Top Result (F) Top Result (M)
05/30/26 6 6:59:08
Date Finishers Top Result (F) Top Result (M)
05/30/26 1 16:28:26

24 Hours

Date Finishers Top Result (F) Top Result (M)
05/24/25 14 64 80

12 Hours

Date Finishers Top Result (F) Top Result (M)
05/24/25 12 44 64
05/25/24 1 50.4

9 Hours

Date Finishers Top Result (F) Top Result (M)
05/24/25 1 32
05/25/24 1 42

6 Hours

Date Finishers Top Result (F) Top Result (M)
05/24/25 1 36
05/25/24 5 33.6 37.8

48 Hours

Date Finishers Top Result (F) Top Result (M)
05/24/25 7 96 116
05/25/24 12 92.4 104.8

Weekly Newsletter

A roundup of the week's content and most recent race results. Sent once a week on Thursday.

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