About This Route
The San Jacinto Mountains section of the Pacific Crest Trail, from Snow Creek to Devil's Slide Trail near Idyllwild, spans about 20 miles with over 7,000 feet of elevation gain and loss. This advanced trail running route climbs from desert floors at 1,000 feet to San Jacinto Peak at 10,834 feet, offering stunning views of Palm Springs and the Coachella Valley. Popular among ultra-runners training for events like the San Diego 100, it features exposed ridges, pine forests, and seasonal wildflowers. Follow Leave No Trace principles by staying on the trail to protect fragile alpine meadows, as recommended by the National Park Service (NPS).
Safety Considerations
Trail running here demands respect for extreme elevation changes and microclimates; start early to avoid afternoon heat above 100 degrees Fahrenheit in lower sections during summer. Rattlesnakes are common below 6,000 feet, so scan ahead while running and use trekking poles to probe rocks. Stream crossings near Snow Creek can be hazardous after rain, with fast currents and slippery boulders; test water depth with a pole and unclip your pack waist belt before fording, per REI expert advice. Lightning risk peaks on open ridges; monitor weather via the NPS San Bernardino National Forest app. Dehydration strikes fast in dry air; carry 4 liters minimum and treat all water with Aquamira drops. Hypothermia lurks above treeline even in summer; layer with merino wool base layers. Navigation fails without preparation; use the FarOut app with offline maps, as cell service drops in canyons.
Essential Gear
Pack Salomon Ultra Glide 2 trail shoes for grip on loose scree; a Osprey Skarab 30 hydration pack with 3L bladder; Black Diamond Distance Carbon Z poles for stability on descents; a SPOT Gen4 satellite messenger; Petzl Actik Core headlamp with extra batteries; and an emergency bivy from SOL.
Emergency Tips
In case of injury on exposed ridges, signal rescuers with three whistle blasts and bright gear; activate your SPOT with custom PCT message including mile marker. For snakebites, immobilize limb below heart level and hike out slowly to Idyllwild trailhead where rangers coordinate medevac via San Bernardino Search and Rescue.