Santa Ana River Trail
This trail is now nearly complete to Featherly Regional Park, and with a minor detour along Santa Ana Canyon Road it is possible to ride all the way from Huntington Beach to the Riverside County line, a round trip of more than 60 miles. As the trail follows the river bed for most of its length, the ride is generally flat. Access to the trail is provided at a number of cross streets in the county.
San Gabriel River Trail
Technically in Los Angeles County, this relatively flat trail offers beach access to residents of Buena Park, La Palma, Cypress and Los Alamitos.
Aliso Creek Trail
This scenic, moderately-difficult trail winds for about 10 miles through relatively undeveloped bottomland from Cook's Corner, at the intersection of Santiago Canyon Road and Live Oak Canyon Road, to the boundary of Laguna Niguel Regional Park. When it is complete, the trail will extend to the beach at South Laguna.