Course Overview
The Sourdough Snowshoe Race 18K covers 11 miles through Colorado's winter backcountry near Nederland, starting from the South Sourdough Trailhead at 8,500 feet elevation. Racers head north toward Brainard Lake Road before turning around for the return trip, all while wearing snowshoes regardless of snow conditions. The course follows the Sourdough Trail through mountain terrain that can vary dramatically depending on snowpack and weather. Expect limited cell service and potentially challenging winter conditions at this elevation in late January. The route includes one aid station at the Brainard Lake turnaround, offering hot tea, energy gels, and granola bars, though runners must carry 20 ounces of liquid and 600 calories throughout the race. This race suits runners comfortable with mandatory gear requirements, backcountry winter conditions, and the unique challenge of snowshoe racing. The donation-based format and "difficult and fun" philosophy attracts adventurous types who don't mind that plans might change based on trail safety. Those seeking predictable race-day logistics or guaranteed conditions might find the variable nature frustrating.