East Four Corners Loop
ElevationAscent: 765' 233 m
Descent: -766' -234 m
High: 1,371' 418 m
Low: 709' 216 m
GradeAvg Grade: 6% (3°)
Max Grade: 19% (11°)
Popular runs nearby
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Worsham Canyon Trail
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9.8 mi 15.8 km • Out and Back • 814 ft Ascent 248.01 m Ascent
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“A great loop route option in the middle of the park, with access from Rolling M Ranch.”— Zander Göpfert
After just under a mile on the South Ridge Trail, the grade begins to ease up as you've gotten a great warm up to continue your ascent. Fun fact, this trail marks the northern boundary of the Water Canyon Natural Preserve, which is a biological corridor to help animals such as bobcats and mountain lions maintain their large habitats by providing a bridge between open spaces.
At just under 1.5 miles, the South Ridge Trail will continue climbing to the left (southwest) while the Telegraph - S. Ridge Connector will head to the right (west/northwest). Turn right here for the final push to the high point of this run (1,370') before dropping into the Four Corners rest area.
The Four Corners is one of the trail hubs of the park with access to six different sections of trail. For folks looking for more, this is a great spot to continue your journey. However, for this featured run, head back on the Telegraph - S. Ridge Connector the way you came, this time looking for a left-hand turn onto the Telegraph Canyon Trail.
This ridgeline path will return back to Telegraph Canyon Rd on a more northerly, albeit parallel, trail to the South Ridge Trail. Once back at Telegraph Canyon Rd., turn left to head north back to your vehicle.
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Land Manager: California State Parks: Chino Hills