This 5-mile loop winds through an undisturbed swath of parkland to babbling creeks and fine views across the San Fernando Valley to the San Gabriel Mountains.

Witness the stunning transition of forest to desert on a 10.5-mile hike that traverses the Laguna Mountains.

No time for Pacific Crest thru-hiking? This 12-miler samples a section of the Pacific Crest Trail, passing mile-high peaks and desert vistas.

This beautiful 7.1-mile figure-eight route visits a weathered farm and two ponds, then passes through chaparral patches to isolated oak stands.

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.

This 9.8-miler reveals the hard-knock life of the West--an old cowboy camp with jailhouse. Also, check out the rare shrimp in seasonal pools.

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

This 5.7-mile loop visits SoCal's last wild river in Santa Margarita Canyon, a refuge hosting numerous species of endangered birds and plants.

Jack up your heart rate on this 6.4-mile out-and-back past giant boulders to a sun-baked peak with incredible ocean-to-mountain views.

This 2.6-mile loop in Torrey Pines State Natural Reserve links three park trails, sandstone bluffs, and views of undeveloped coastline.