Catalina Island Half-Marathon & 10K 2026

The Catalina Island Half-Marathon & 10K starts in Avalon, the island town off the Southern California coast. The main event is a 13.1-mile trail half marathon, with a 10K and Kids Run also offered. It begins at 8:00 AM Pacific, and the half marathon must be completed by 1:00 PM, structuring the day around a challenging but feasible morning on the trails. The half marathon starts in Avalon, goes by the historic Wrigley Mansion, and then ascends into Catalina Island's rugged Interior. The route reaches high points with Pacific Ocean views, and on a clear day runners might see two other Channel Islands. Following the climbs, the course descends past the Wrigley Memorial and returns to Avalon. The 10K offers a shorter option with a route through Avalon's hillsides, making the series suitable for runners who desire the island setting without the commitment of the full trail half.