Pipeline, Sierra Peak and Coal Canyon Loop Trail

The primary access point for this loop is the Green River parking & trailhead. This is a convenient starting point for the route.

For an average jogger, this challenging 20.3 km (12.6 miles) loop typically takes around 2 hours and 45 minutes to complete. However, given the significant elevation gain of over 800 meters, your actual time may vary based on your fitness level and pace.

The trail predominantly features fire roads, which can be wide and relatively smooth in some sections. However, be prepared for significant elevation changes, including steep inclines and descents, particularly on the Pipeline Trail portions. Some areas, especially after rain, might be slick and muddy. The route also includes sections of the Coal Canyon Trail.

You'll encounter several notable points of interest. Highlights include the panoramic View of Irvine and Orange County from Picnic Rock and the rewarding Sierra Peak Summit, which offers expansive vistas of the surrounding mountains, the Pacific Ocean, and even Catalina Island on clear days. You'll also see unique geological features like 'mini-Moab' and a grove of Tecate cypress trees.

This trail is generally graded as 'difficult' for jogging due to its substantial length (20.3 km / 12.6 miles) and significant elevation gain (over 800 meters). It requires good to very good fitness and is best suited for experienced joggers looking for a rigorous workout rather than beginners.

No, the trail is fully exposed in many sections, and there are no natural water sources available along the route. Proper planning for sun protection and carrying sufficient water for the entire duration is crucial.

Yes, the route incorporates sections of several other paths. You will jog along parts of the Santa Ana River Bicycle path, Coal Canyon Trail, Leonard Road, Pipeline Trail, and Telephone Trail, among others.

While many trails in the region allow dogs, specific regulations for this loop within Chino Hills State Park can vary. It's always best to check the official Chino Hills State Park website for the most current rules regarding dogs, including leash requirements.

Spring and fall generally offer the most pleasant conditions with milder temperatures. Summers can be very hot and exposed, making early morning starts essential. Winters can bring rain, potentially making some sections muddy and slick. Always check the weather forecast before heading out.

Yes, as part of Chino Hills State Park, there may be entrance fees required to access certain areas or parking facilities. It's advisable to check the official California State Parks website for Chino Hills State Park for current fee schedules, operating hours, and any specific regulations or permits that might be needed for activities like jogging.

Given the trail's difficulty, exposure, and lack of water, you should bring plenty of water (more than you think you'll need), sun protection (hat, sunscreen), appropriate trail running shoes, snacks, and a fully charged phone. A map or GPS device is also recommended.