Four Corners Loop: Raptor to Southridge
ElevationAscent: 700' 213 m
Descent: -704' -215 m
High: 1,371' 418 m
Low: 723' 220 m
GradeAvg Grade: 5% (3°)
Max Grade: 19% (11°)
Current trail conditions
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“Three miles of rolling singletrack down and three miles of fire road up.”— Sam Kome
Ride up to Raptor Ridge on Telegraph Road - this part is a pretty easy gradual climb up a winding sandy, gravel road. Take a break at the top of Telegraph under the shed roof; check the map up there, and then get going. Raptor Ridge trail is the singletrack to the east. It is narrow and can be overgrown but the next 3 miles on it are mostly downhill, smooth flow over hilly pasture land.
At the bottom of the hills, pass a ranger station (or stop in), then look for a marked, gated right onto doubletrack. This 3 mile return is payment for that super fun flow trail. South Ridge: doubletrack, steep at times, exposed to the sun. Bring water and be sure to drink it. Take the first right (marked "Telegraph") but not the second one (also marked "Telegraph"), and you'll be back at the top of Telegraph.
Alternative return: pass the ranger station, take the first right onto Telegraph Canyon trail. Either way, it's a climb back to Four Corners.
There is very little shade so bring water. Wildlife a-plenty.
Land Manager: California State Parks: Chino Hills