Shell Ridge is the City of Walnut Creek's largest open space unit, with trails for biking, hiking and riding through oak woodlands and grassland savannah on the lower flanks of Mount Diablo. Shell Ridge gets its name from the marine fossils left behind when the ocean waters that once covered the area receded.
Kovar trail is mostly uphill and then you drop down into Indian Valley and head back uphill to Ridge Trail. It's a great hike/run if you're training hills but not much shade so plan for that. All the uphill is worth it because running on top the hill on Ridge trail is really cool.
I parked at the trailhead and followed Stage Road, then onto the Little Yosemite Valley Trail. There was a steep climb. I turned right onto the Briones to Mt. Diablo Regional Trail. Followed the Mokelumne Coast to the Crest Trail, then hiked another steep climb onto the Shell Ridge Trail and went down to the Diablo Scenic Trail. The Diablo Scenic trail led me back to the parking lot. Total 6.3 miles with average 3.0 mph. I got a good workout.
It's a good trail, it's not et all hard or moderate .. It's definitely easy one ... Only thing to remember is that castle rock area use to be close during January to July 31. We was .5 miles close to rock but then came back this time due to close area. But I am gonna redo it on first Saturday of August . The park opens on north gate at 7:30 am.
Peter E. on Shell Ridge: Twin Ponds Loop
Excellent hike - great workout!
Peter E. on Shell Ridge - Borgess Ranch Loop
Great Hike!! Easy, except the first 2 miles are all Cow trodden but give the ankles a good work out! Great views of Mt Diablo.