Night Crawler Endurance Challenge
Fri. Aug 14 6:30PM - 6:30AM Sat. Aug 15 2026
4HR and 12HR SOLO
12HR 4-Person Relay
More than just a run...
2026 update:
WYRun, has partnered with Fat Fish Racing to bring everyone a fun weekend of racing on Casper Mountain!
Friday Aug. 14th from 6:30PM until 6:30AM, Saturday Aug. 15th will be the 10th edition of the Night Crawler Endurance Challenge. Followed by the
Bear Bait 8 XC mountain bike race on Saturday Aug. 15th, from 8:00AM until 4:00PM.
We will be hosting the Night Crawler out of the Start/Finish/Lap area in the Nordic stadium near the Casper Mountain Trails Center (9301 Casper Mountain Rd.) We will have access to the Trails Center Parking Lot. See the new course on the course tab...
We will be offering 4 hour and 12-hour solo options, as well as a 12-hour 4-person relay. We're excited to see you all again for year 10 on Fri. Aug. 14, 2026!
The Night Crawler Endurance Challenge is central Wyoming's only time-based solo and relay event that is run overnight. Run through the forested trails atop beautiful 8,100-foot Casper Mountain. Run as a 4HR or 12HR solo runner or grab your nigh crawling friends for the 12HR 4-Person relay.
The Night Crawler begins at 6:30 PM on Friday evening continuing throughout the night and finishes at 6:30 AM on Saturday. Set up a tent, hammock, or chair in the start/lap/finish area and take a break between laps to enjoy the camaraderie of our awesome trail running community.
Are you up for the challenge?
WYRun, has partnered with Fat Fish Racing to bring everyone a fun weekend of racing on Casper Mountain!
Friday Aug. 14th from 6:30PM until 6:30AM, Saturday Aug. 15th will be the 10th edition of the Night Crawler Endurance Challenge. Followed by the
Bear Bait 8 XC mountain bike race on Saturday Aug. 15th, from 8:00AM until 4:00PM.
We will be hosting the Night Crawler out of the Start/Finish/Lap area in the Nordic stadium near the Casper Mountain Trails Center (9301 Casper Mountain Rd.) We will have access to the Trails Center Parking Lot. See the new course on the course tab...
We will be offering 4 hour and 12-hour solo options, as well as a 12-hour 4-person relay. We're excited to see you all again for year 10 on Fri. Aug. 14, 2026!
The Night Crawler Endurance Challenge is central Wyoming's only time-based solo and relay event that is run overnight. Run through the forested trails atop beautiful 8,100-foot Casper Mountain. Run as a 4HR or 12HR solo runner or grab your nigh crawling friends for the 12HR 4-Person relay.
The Night Crawler begins at 6:30 PM on Friday evening continuing throughout the night and finishes at 6:30 AM on Saturday. Set up a tent, hammock, or chair in the start/lap/finish area and take a break between laps to enjoy the camaraderie of our awesome trail running community.
Are you up for the challenge?
The Challenge...
Participants will follow a scenic, rolling race course atop Casper Mountain. The course consists of forested single track and cross-country ski trails, with minimal-moderate technical difficulty… Perfect for a run at night!
The event will begin under a beautiful August sunset, continuing throughout the night under the illumination of your headlamps and the moon, finishing as the sun rises revealing the alpen-glow of our stunning mountain gem. Participants will switch directions every lap, (“washing-machine” style), with odd-number laps (1,3,5 etc.) run clockwise and even-number laps (2,4,6 etc.) run counterclockwise.
Camping: You can reserve camping spots inside the county park. Tower Hill campground is right along the course. Please abide by current county rules upon arrival. Visit this link: Catalog - Natrona County Parks (rec1.com)
During the event participants and their crews are encouraged to use the start/lap/finish area for staging. Set up a tent, hammock, chair, etc. and take as little or as much time as you want between laps to get to know your fellow trail runners and enjoy the camaraderie of the event. *Please use your own discretion as far as where you set up and remember to check in and out at the start/finish after each lap.*
Awards Every participant will receive a finisher award. There are no DNF’s with this event! Complete as many miles/laps as you can and feel good about it.
The event will begin under a beautiful August sunset, continuing throughout the night under the illumination of your headlamps and the moon, finishing as the sun rises revealing the alpen-glow of our stunning mountain gem. Participants will switch directions every lap, (“washing-machine” style), with odd-number laps (1,3,5 etc.) run clockwise and even-number laps (2,4,6 etc.) run counterclockwise.
Camping: You can reserve camping spots inside the county park. Tower Hill campground is right along the course. Please abide by current county rules upon arrival. Visit this link: Catalog - Natrona County Parks (rec1.com)
During the event participants and their crews are encouraged to use the start/lap/finish area for staging. Set up a tent, hammock, chair, etc. and take as little or as much time as you want between laps to get to know your fellow trail runners and enjoy the camaraderie of the event. *Please use your own discretion as far as where you set up and remember to check in and out at the start/finish after each lap.*
Awards Every participant will receive a finisher award. There are no DNF’s with this event! Complete as many miles/laps as you can and feel good about it.
- The 1st place overall Female, and Male Solo 12-hour and 4-hour runners will receive awards.
- The 1st place overall 12-hour, 4-Person Relay will receive awards.
- We will also have unique awards for the overall winners for participants competing in both the Night Crawler run & Bear Bait MTB events....more details to come
Hot Breakfast - All participants will receive breakfast shortly following the completion of the race. This will be prepped and served by volunteers.
Location: Casper Mountain Trails Center 9301 Casper Mountain Rd.
