Castle Rock is a small park with big possibilities. The 33-mile-long Skyline-to-the-Sea Trail connects Castle Rock and Big Basin Redwoods State Parks. The 5.6-mile Saratoga Gap and Ridge Trail Loop leads to Goat Rock, Castle Rock Falls, Russell Point Overlook and the Castle Rock Trail Camp. Goat Rock Overlook provides panoramic views of the San Lorenzo Valley and the Pacific Ocean. The moderately difficult Ridge Trail could give you a glimpse of one of the park’s peregrine falcons. The Saratoga Toll Road, a historic logging road and stagecoach line from 1871, is now a well-shaded and graded hike offering some scenic viewpoints. 

If you have an hour,  hike through a lush forest to the grand vistas of 75-foot Castle Rock Falls, 1.3 miles roundtrip. 

If you have half a day, head out farther on the Saratoga Gap Trail, past the falls, along a steep open hillside to the junction with the Interconnector and Ridge trails. You’ll enjoy birds-eye views of the Santa Cruz Mountains and Monterey Bay. You’ll also pass the intricately sculpted sandstone of Goat Rock. 3 miles roundtrip. 
If you have a full day, continue on the Saratoga Gap Trail to Castle Rock Trail Camp. On the way back, check out the Interpretive Shelter exhibits on the Ridge Trail. Near the end of the loop, zip up to the base of Castle Rock. A 7+ mile round trip is full of ups and downs amid local oddities such as black oaks, high-elevation redwoods, knobcone pines, and bizarrely shaped boulders.

Easy Hikes

Castle Rock Loop 
Trailhead: main parking lot; 1 mile loop; elevation gain 300 feet    
Ascend through Douglas-fir, madrone, and tanoak to see the park’s imposing namesake peak—a good spot for bouldering and roped climbs. The surrounding smaller rocks are a great playground for children. 
Castle Rock Falls
Trailhead: main parking lot; 1.3 miles roundtrip, elevation gain 320 feet.   
Meander downhill to 75-foot Castle Rock Falls, which gushes after rains, but may be a trickle during drought. Either way, the views to the west are spectacular. 

Moderate Hikes

Ridge/Trail Camp Loop 
Trailhead: main parking lot, 5.15 miles, elevation gain 1,190 feet
Hike through the forest and past Castle Rock Falls and Goat Rock. Enjoy views of the San Lorenzo River Valley and glimpses of Monterey Bay. Learn about history, wildlife, and habitats at the Interpretive Shelter. Castle Rock Trail Camp has picnic tables, pit toilets, water and a rain shelter.  
Skyline/Loghry Woods/Saratoga Gap Loop
Trailhead: main parking lot; 6.1 miles roundtrip; elevation gain 750 feet 
Head through the forest past Castle Rock Falls and Goat Rock. Enjoy views of the Santa Cruz Mountains and the San Lorenzo River with glimpses across to Monterey Bay if there’s no fog. Castle Rock Trail Camp has picnic tables, pit toilets, water, and a rain shelter. 

Strenuous Hikes  

Middle of the Park from the Gap Loop
Trailhead: Saratoga Gap; 9 miles roundtrip, elevation gain 1,530 feet. 
This challenging hike or run through the forest takes you past mountain and valley views with some glimpses of Monterey Bay on a clear day. Castle Rock Trail Camp has picnic tables, pit toilets, water and a rain shelter. Begin at Saratoga Gap and either go down Saratoga Toll Road Trail or across Skyline Trail (Bay Area Ridge Trail). Close the loop on the Loghry Woods and Travertine Springs trails.
Gap to Gap Loop
Trailhead: Saratoga Gap or Waterman Gap; 16.4 miles roundtrip, elevation gain 1,860 feet
A good workout for strong trail runners and hikers. You can also backpack and stay overnight at the Waterman Gap Trail Camp (reservations required). Trails are mostly wooded, with occasional views of the Santa Cruz Mountains. 
Skyline to the Sea Trailhead: dropoff at Saratoga Gap or park at main parking lot, pickup at Waddell Beach, 25.2–28.2 miles; elevation from 1,660–2,130 feet. 
One of the region’s most rewarding backpack options. Start on the spine of the Santa Cruz Mountains and descend to the ocean in Big Basin Redwoods State Park. Camp at trail camps along the way. Two to four days of backpacking or four to eight hours of trail running. 

Backcountry Trail Camps

Castle Rock Trail Camp lies on a ridge 2.6 miles from the main parking lot via the Saratoga Gap Trail. Each of the 20 first-come, first-served sites has a table, fire ring, nearby piped drinking water, and vault toilets. A camp shelter is available for use during inclement weather. Fires are allowed only in designated fire rings, except during fire-danger season. Wood gathering is prohibited, but campers may purchase firewood at the camp. The only access for bicyclists is via the Campground Service Road Trail off Highway 35 north of the main entrance. Bicycles are not allowed on any trails beyond this camp. 

Waterman Gap Trail Camp is 6.3 miles from the north end of Skyline-to-the- Sea Trail at Saratoga Gap. Because there is no overnight parking there, many backpackers trek in 9.3 miles from the park’s main entrance off Highway 35. The camp has six primitive sites and a vault toilet. Reservations are required; call the trail camp reservation line at Big Basin Redwoods State Park (831-338-8861). No fires, but gas camp stoves are allowed. There’s water in camp, but little beyond, so fill up before you leave.
For more information on both camps, reservation, and more Santa Cruz Mountain backcountry trail camps, please click here.

California State Parks Backpacking Adventures

Looking for your next adventure? California State Parks offers naturalist-led backpacking trips in the Santa Cruz Mountains. Please click here for more information.