Lime Ridge Open Space sprawls across more than 1,200 acres of open space with 25 miles of trails, split between Concord and Walnut Creek. The preserve sits on an eastern ridge that climbs toward Mount Diablo, offering serious elevation gain and long views. You’ll find trailheads and parking on both the Concord and Walnut Creek sides, so you have options depending on where you’re starting from.

The landscape here is being actively restored to native oak savanna grassland, with extensive plantings of oaks, native grasses, and wildflowers. As the vegetation matures, you’ll notice increasing wildlife diversity. The varied terrain means you can choose anything from a gentle walk to a more demanding hike with real climbing.

Dog policies here require some attention because they change depending on which section you’re in. North of Ygnacio Valley Road, dogs need to be under voice and sight command or leashed. This matters because cattle graze in the northern area, and dogs chasing livestock can create serious problems. There have also been coyote encounters when dogs wander near den areas, so keeping your dog close isn’t just a rule—it’s practical safety.

The middle section south of Ygnacio, called the Lime Ridge Wildlife Preserve, is completely off-limits to dogs. This is a protected area, so you’ll need to plan your route accordingly.

South of the Wildlife Preserve, dogs are allowed again but must stay leashed. This southern section still offers good hiking with the same open space feel as the rest of the preserve.

Before you head out, it’s worth confirming current conditions and any updates to the leash policies, especially in the northern section where cattle are present. The terrain can get steep in places, so bring water for both you and your dog, and wear shoes with good grip for the hillier trails.