The XTERRA Trail Run race course is an approximately 5K off road course on dirt and gravel trails. There is a mixture of double track and narrow winding single track. There are some steep climbs and fast descents, and lots of rocky terrain. The 5K is 1 loop of the course, the 10K is 2 loops, and the 15K is 3 loops of the same course. Each loop of the course does one loop of the Durrance Lake shoreline trail and a loop through the Partridge Hills trail system. Be prepared for a wide variety of terrain and footing. This is a fun, challenging course.