Night Crawler 12 Hour Endurance Challenge

August 14th 2026
Casper, WY
12 Hours

The Night Crawler 12-hour Endurance Challenge is a solo ultramarathon and team relay, run overnight under the light of the moon through the forested trails atop beautiful 8,100-foot Casper Mountain. Run as a solo ultrarunner, or get your fellow night crawling friends together for a 2 or 4-person relay team. The Night Crawler begins at 6:30 PM on Friday evening continuing throughout the night and finishes at 6:30 AM on Saturday as the sun rises. Enjoy the camaraderie of our awesome trail running community and the scenery that our mountain gem has to offer. Are you up for the challenge? https://nightcrawler12-hourec.weebly.com/

Upcoming Races

Aug 14 2026
12 Hours
Multiple Loop
3 Elevation Rating
Hilly, ~2500-7500 feet in 50 miles
3 Surface Rating
Some rocks, root, and/or ruts

Results

12 Hours

Date Finishers Top Result (F) Top Result (M)
08/22/25 18 48 56
08/23/24 17 46.1 51
08/25/23 14 40 56
08/26/22 26 51 52.5
08/27/21 17 46 54
08/28/20 18 32 57.5
08/23/19 11 40 52.5
08/24/18 10 44 51.3

Weekly Newsletter

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

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