The rocky points of this 5.6-mile coastal hike offer some of the best tidal pool viewing in Southern California. Go at low tide to see crabs, sea stars, anemones, and sea hares.

This 6.5-mile loop passes through sage, chaparral, and oak groves to a high plateau with panoramic views of the Santa Ana Mountains.

Escape the city's smog on this pretty 7.3-mile loop into the chaparral-covered ecosystem of La Jolla Canyon. Fresh air and Pacific Ocean vistas are only a 30-minute drive from downtown.

Navigate the long, gorgeous valley of Bishop Creek's Middle Fork to alpine lakes beneath spectacular Sierra Crest peaks. Leave early for this arduous 17-mile hike.

This easy 4.7-mile route loops past Sycamore Canyon Falls and the shady bottom of Big Sycamore Canyon.

This 12.8-mile cardio challenge climbs 3,000 feet to sweeping vistas in Agua Tibia Wilderness. Start early with lots of water, and bring gaiters for the chaparral.

Link two unnamed peaks in the rugged hills above San Pasqual-Clevenger Canyon on this challenging 4-mile, half-day hike.

Before Napa Valley got its grapevine rep, the landscape likely resembled 2,000-acre Bothe-Napa Valley State Park, where redwoods shade this mellow 4.6-mile trail.

This 9.6-mile hike offers a tour of the Marin Headlands, then loops to include fine bluff views of San Francisco Bay and the Pacific. Bring extra clothes; the weather changes quickly.

This 5-mile loop wanders through huge redwood stands along the western slope of the Santa Cruz Mountains. Extend the trip with an overnight at a Sierra Club hut.