As the largest water park of its kind in the world, Mission Bay comprises 4,200 acres in roughly equal parts of land and water, surrounded by 27 miles of meandering shoreline of sandy beaches. Interconnected by a network of waterways, inlets and islets, the bay is best traveled by boat, but if you don’t have a boat and would rather stay dry, biking along easy going pedestrian and bicycle paths is the next best way to explore.
A San Diego County Bicycle Coalition’s recommended route incorporates almost 12 miles of flat, scenic bike paths along most of the interior of the bay, passing by all of Mission Bay’s public parks and following a portion of the San Diego River. With the exception of a few short sections, the route is vehicle free.
Don’t want to hassle bringing a bike on your trip? There are many bike rental shops in and around around Mission Bay and along Mission Boulevard (west of the bay). Search for “bike rentals” on this site.
Courtesy of http://www.sandiego.org/articles/biking/bike-path-mission-bay.aspx