The XTERRA Oak Mountain Trail Runs truly has something for everyone. Long-distance runners can choose to race on the half-marathon (20K) course. Others can opt to participate in the 10K and 5K trail runs. All four courses will take place on the award-winning trails at Oak Mountain State Park in Pelham, Alabama. Trail Runner magazine ranked Oak Mountain as one of the top 25 “Crown Jewels” of running trails across America in 2011.