San Francisco residents looking for a quick nature escape can reach Coal Creek Preserve in roughly an hour by car. The roughly 500-acre preserve sits on the eastern slope of the Santa Cruz Mountains between San Francisco and San Jose and offers hikers, bikers and riders a compact mix of trails, seasonal waterfalls and wildlife viewing.
What visitors will find and how to plan
The preserve’s terrain includes oak and maple woodlands, open hillsides and creek corridors. Visitors can expect bright wildflowers in spring, summer fruiting blackberries, autumn foliage and seasonal waterfalls in the wetter winter months.
Wildlife is abundant. The preserve is home to coyotes, deer, bobcats, mountain lions, raccoons, skunks, golden eagles and rattlesnakes, so hikers should remain aware and keep dogs leashed where required.
- Distance: about an hour south of San Francisco; a little less than an hour west of San Jose.
- Size: roughly 500 acres.
- Trail types: multi-use trails that allow dogs, equestrians and mountain bikes on some routes.
- Seasonal notes: trails can be very muddy after rain; waterfalls appear mainly in the rainy season.
Popular routes and conditions
Several shorter trails crisscross the preserve and can be combined into longer outings. The Coal Creek Double Loop is a commonly used route: it measures about 2.4 miles with approximately 500 feet of elevation gain, and offers views of the surrounding Bay Area. Some trails are listed as multi-use, allowing dogs, equestrians and mountain bikers on routes such as the Alpine Road Regional Trail and the Coal Creek Double Loop.
One of the best spots for seeing water flowing is near Crazy Pete’s Road. A roughly 3-mile route that links several trails and gravel roads leads to the area where the preserve’s best-known seasonal cascade appears during the rainier months.
“The preserve’s streams and trails respond quickly to seasonal rains — expect waterfalls in winter but muddy, slick conditions on many paths,”
Visitors should dress for variable footing, bring water and check recent weather before heading out. Because the preserve is smaller than many nearby open-space lands, trailways are often narrower and can become congested on weekends.
| Feature | Detail |
|---|---|
| Size | ~500 acres |
| Coal Creek Double Loop | 2.4 miles, ~500 ft elevation gain |
| Crazy Pete's Road route | ~3 miles (combined trails and gravel roads) |
Coal Creek Preserve is an accessible option for San Francisco residents who want a day trip with varied scenery without driving the longer distances to the Sierra. As with any natural area, staying on designated trails, packing out trash and respecting wildlife will help keep the preserve enjoyable for all users.
