The race is intended to be a difficult and fun donation-based backcountry event; any and all plans can change due to trail conditions for the runner’s safety. Snowshoes will be required unless the race director chooses to change the requirements due to trail conditions. All racers are required to carry 20 ounces of liquid and 600 calories of nutrition. Be Safe and Leave No Trace.

Racers must wear their snowshoes for the entirety of the race regardless of the snowpack! ?

We will be doing bib pick-up, check-in, and race day registration at the trailhead. Please arrive by 8:00 to pick up bib and check-in. Carpool is encouraged to the race start/finish at the Sough Sourdough Trailhead near the University of Colorado Mountain Research Station off the Peak to Peak Highway CO 72 on County Road 116. Post covid ski traffic is RAGING once again so I moved the race up 30 minutes so y'all can get on the road earlier to try and avoid getting stuck like last year. Race begins at 8:30 am.


Racers begin from the South Sourdough Trailhead parking lot (start line) head north on the trail to Brainard Lake Road. There, the 18K racers will turn around at Brainard Lake Road and return to the South Sourdough Trailhead (finish line). The 30K racers will continue across Brainard Lake Road following the Sourdough Trail loop and returning back to Brainard Lake Road and then on to the South Sourdough Trailhead (finish line). Note: if you are running the 30K, the cutoff to Brainard Lake Rd is 11:30 PM. If you reach there after 11:30 PM please turn around with the 18K runners. Please make sure that if you are downgrading that you are checking in with the aid station and confirming with them. You will not be listed as a DNF, we will just list your finish as an 18k.


We will have an aid station this year at the Brainard Lake turnaround. We will have hot and sweet Sport Tea, some GUs and like products and granola bars. Bring enough water to get yourself through the race.

There is, at best, spotty cell phone service in Nederland. Please put the address to the trailhead into your direction-finder before you leave in the morning so you will know where to find us.

This year we will also be hosting a small finish line "hangout" with a warming tent, propane fire pit, and hot cider or cocoa.

Start: South Sourdough Trailhead: https://maps.app.goo.gl/BrMBQoZXHvA6mc7S6 

Distance: 18k & 30k

Start Time: 8:30am 1/32/2026

Cost(These are suggested donation amounts):

18K:

$35

30K:

$45