Inside Trail Racing (ITR) was founded to provide a competitive yet amateur-approachable race environment that challenges all abilities and presents the beauty of the varied West Coast trails. With distances from 5K to 100K, we are committed to serving every participant an ambitious, fun, and well-supported trail-running event. Our long-distance events rank amongst the most popular events in the country, attracting world champion mountain- and ultra-runners and delivering courses even more strenuous than The North Face Endurance Series. It is our mission to work within the trail-running community as a cooperative, encouraging entity upon whom both runners and hikers can depend.