Mission Beach is a community built on a sandbar between the Pacific Ocean and Mission Bay. It is part of the city of San Diego, California. Mission Beach spans nearly two miles of ocean front. It is bounded by the San Diego River estuary on the south, Mission Bay Park on the east, and the community of Pacific Beach on the north. A boardwalk runs along the beaches on both the ocean and bay sides of the community. The main artery through Mission Beach is Mission Boulevard.