Pets allowed
Not Allowed
Elevation Gain
1,626.00 ft (495.60 m)
Trail type
12.00 mi (19.31 km)
Please respect the outdoors by practicing Leave No Trace. Learn more about how to apply the principles of Leave No Trace on your next outdoor adventure here.

The area now known as the Caspers Wilderness Park has changed hands as cattle ranch property for many years leading up to the 1970s. The area was eventually donated to the Starr Foundation in 1971, and it was deeded to the National Audobon Society for use as a wildlife sanctuary in 1973. In late 1974, under direction from Chairman Ronald W. Caspers, the Orange County Board of Supervisors voted to purchase the southern 5,500 acres of the sanctuary for use as public recreation. This park was later named the Starr Viejo Regional Park, and it was used for primitive wilderness day use and camping.

After a tragic accident in 1974 where Caspers, his family, and many of his friends were lost at sea, the Board of Supervisors voted to change the name of the park in his honor. In 1984 an extension to the park was acquired, bringing it to the huge 7,600 acre portion of Bells Canyon as it exists today.

There are many interlocking trails that can make for an endless variety of loops for hiking, trail running, or horseback riding. Take the Bell Canyon Trail north until the beginning of the Oso Trail, and after a climb and easy ridgewalk you will come to a shaded picnic table with a view that makes for a great lunch spot. Continue following the Oso Trail as it gets closer and closer to majestic views of the Santa Ana Mountains, dominated by Santiago Peak (5,689 feet).

The trail will eventually curve south and lose elevation as it nears the portion that parallels US-74 until it veers right back into the park. Briefly touch a parking lot near the park entrance before heading back into the wilderness to use the East Ridge Trail and Quail Run to squeeze more views out of your day on the way back to your vehicle.

Logistics + Planning

Preferable season(s)




Parking Pass

State Park Fee


Great views. Accessible. Easy trails.


Little water.

Trailhead Elevation

452.00 ft (137.77 m)


Backcountry camping
Historically significant
Big vistas

Typically multi-day


Suitable for




They DO NOT allow dogs
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