The 50K course starts and finishes at Skull Hollow. From the start you will make your way up to the saddle that sits below Gray Butte where you'll hit Gray Butte AS 2.7 miles into the race. From the AS you'll head towards Smith Rock State Park descending Burma Road as you drop down to the river. The course follows Wolf Tree Trail until the bridge where you'll turn right and begin the steep climb up Misery Ridge. Once Misery is tackled, you'll return via the River Trail back to towards the bridge and Smith Rock AS at mile 11. After that AS, you'll head back along the River Trail and climb up Summit Trail returning to the Gray Butte AS at mile 19.3. After a loop around Gray Butte and out into the grasslands, you'll return to the finish at Skull Hollow via Cole Loop Trail. The course consists of  4500ft of gain and loss with 80% single-track trail and 20% gravel road. There are 4 full aid stations.