Lime Ridge Open Space

There are miles of trails crisscrossing the open space areas in Walnut Creek. The trails are great for hiking, mountain biking, and dog walking.

From the north, near Treat Boulevard, to Ygnacio Valley Road there are a lot of hills with trails. Within this area, dogs are allowed only if on a leash. More by clicking here.


Located on the eastern edge of Walnut Creek on a dominant ridge leading to Mount Diablo, Lime Ridge Open Space includes some of the last remaining chaparral in the city and has a diversity of plants and wildlife. Portions of the open space are owned and managed by the City of Concord, while others are managed by The City of Walnut Creek.

The trails are perfect for hiking and mountain biking. It’s easy to hike for miles here, especially when the wildflowers are in full bloom. The best time to visit is in the spring or fall. It will be cooler then and you won’t have to worry about those bloodsucking mosquitoes.

Mountain Biking

Mountain biking is a popular activity in the area and many mountain bikers enjoy riding in the Lime Ridge Open Space. The park’s trail system has both single-track trails and fire roads for hiking and mountain biking.

Some single-track trails are a bit overly technical for beginners and novice riders, but more advanced mountain bikers will find a fun ride on the Ohlone trail. Other trails, like China Camp and Summit Trail, are also a lot of fun.

However, some local residents, including those from the Rancho Paraiso neighborhood, oppose a flow trail being built in the park. The flow trail plan is currently in a holding pattern until the city’s public works staff complete an assessment of the project’s potential impact on the area’s natural habitat, such as erosion. More about Martinez here.

Dog Walking

As part of the extensive trail system of the East Bay Regional Park District, Lime Ridge Open Space stretches along a dominant ridgeline between Walnut Creek and Concord. With trailheads and parking in both cities, this dog-friendly park features a variety of hiking trails within over 1,200 acres of pristine open space.

Enjoy a relaxed hike with your furry friend on a paved path through the forest at this local park. This flat trail is accessible to wheelchairs, strollers, and bikes.

This dog-friendly preserve is home to beautiful oak woodlands and wildflowers in spring. The preserve is also a wildlife sanctuary, with grazing cattle and black-tailed deer. You can also see Mount Diablo and the surrounding hills from the rocky peak of Briones Peak.


With lush, green vistas and rolling hills, Walnut Creek’s rugged open-space preserves offer scenic hiking trails and a tranquil respite from city life. Whether you prefer a leisurely stroll or a brisk hike, these parks and trail systems are perfect for any age and skill level.

Bring a hat and plenty of water, especially during the summer when these parks tend to lack shade. Additionally, practice Leave No Trace principles to protect wildlife habitats and keep visitors safe from excessive heat.

Sugarloaf Open Space, along South Ygnacio Valley Road, features one of the city’s few black walnut orchards and a 177-acre land parcel with three miles of trails offering ridgeline views of Mount Diablo, Shell Mountain, and Hill Las Trampas. The park offers a Ranger Station, picnic and amphitheater areas for day use, and party camping by reservation.


Lime Ridge Open Space is located on the eastern edge of Walnut Creek on a dominant ridge leading to Mount Diablo. It features miles of trails within 1,200 acres of pristine open space. Extensive plantings of native oaks, grasses, and wildflowers are restoring natural oak/savanna grassland and increasing wildlife diversity.

A wide variety of recreational opportunities are available at the park, from dog-running areas to secluded hiking and biking trails. The park is dotted with wildflowers and offers many scenic views of the area from its numerous overlooks.

The park’s trail system connects to a number of local parks in Walnut Creek (Las Juntas Park, Heather Farm Park) and Concord (Larkey Park, Shell Ridge). It also makes important connections to regional trails, including the Briones-to-Mount Diablo Trail and the Iron Horse Trail. Continue reading about Hap Magee Ranch Park.


Driving directions from Century Pyramid to Lime Ridge Open Space

Driving directions from Lime Ridge Open Space to Hap Magee Ranch Park