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 grab some aid next to our cozy fire, then head right back the way they came.  The 30K racers will hit the aid station to check in, and then 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 intend to run the 30K, you must reach our aid station by 12pm. If you arrive after 12 PM, we will direct you to turn around with the 18K runners. This is an honor system, so please be safe and be smart. You will not be disqualified, you will just be listed as an 18K runner instead of a 30K runner for finishing times.