Rock 'n' Roll Los Angeles Halloween Half Marathon & 5K 2026

Costumes are the first thing you notice at the Rock 'n' Roll Los Angeles Halloween Half Marathon & 5K: runners show up as skeletons, superheroes, rodeo clowns, and stranger things. The race is a road event in Los Angeles, run in October, with a mostly flat half marathon and a shorter 5K for people who want the Halloween crowd without the full 13.1 miles. The half marathon starts and finishes at L.A. Live, near the arena long associated with the Lakers, and uses two out-and-back sections. One leg heads south toward Exposition Park, the Los Angeles Memorial Coliseum, and the edge of the USC campus; the other goes north and west through downtown, MacArthur Park, and Koreatown before turning back near the Miracle Mile. Half marathoners get four hours to finish, measured by personal chip time.