Shell Ridge Open Space: Walnut Creek's Natural Escape
Explore Walnut Creek's Shell Ridge Open Space: Hike scenic trails, discover marine fossils, and enjoy panoramic views of the East Bay.
Shell Ridge Open Space, located in Walnut Creek, California, is a sprawling 1,420-acre natural preserve with over 31 miles of trails for hiking, biking, and equestrian activities. Named for the marine fossils found in its rock formations, it offers stunning views and a diverse landscape from rolling hills to oak woodlands.
A brief summary to Shell Ridge Open Space
- 1035 Castle Rock Rd, Walnut Creek, California, 94598, US
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- Monday 6 am-8:30 pm
- Tuesday 6 am-8:30 pm
- Wednesday 6 am-8:30 pm
- Thursday 6 am-8:30 pm
- Friday 6 am-8:30 pm
- Saturday 6 am-8:30 pm
- Sunday 6 am-8:30 pm
Local tips
- Bring plenty of water, as there are no water fountains within the open space.
- Wear sturdy shoes, as the trails can be uneven and rocky.
- Be aware of rattlesnakes, especially on warm days.
- Check the Walnut Creek Open Space Foundation website for trail closures or fire warnings.
- Dogs are allowed on leash; be mindful of wildlife and cattle.
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Getting There
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Public Transport
From Walnut Creek BART station, take County Connection bus number 7 towards Ygnacio Valley Rd. Ride for 10-15 minutes and get off at Ygnacio Valley Rd and Castle Rock Rd. Walk 0.5 miles north on Castle Rock Rd to Shell Ridge Open Space at 1035 Castle Rock Rd. A single ride on County Connection is $2.50.
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Walking
From downtown Walnut Creek, head north on N Main St towards Ygnacio Valley Rd. Continue to Ygnacio Valley Rd, turn left, and walk for about 1 mile until you reach Castle Rock Rd. Turn right onto Castle Rock Rd and walk approximately 0.5 miles to Shell Ridge Open Space at 1035 Castle Rock Rd. This is about a 2.5-mile walk.
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Driving
From downtown Walnut Creek, drive out Ygnacio Valley Road approximately 2 miles to Bancroft/Walnut Avenue. Turn right on Walnut Ave and drive approximately 1.6 miles to the intersection with Oak Grove/Castle Rock Rd. Turn right on Castle Rock Rd and drive about 1.1 miles to Borges Ranch Road. Turn right onto Borges Ranch Road and drive slowly 0.6 miles to the picnic area at Bob Pond or 0.1 mile further to the ranch buildings. Parking is free at the trailhead. Limited parking may be available on Castle Rock Road.
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