From the trailhead, the San Ysidro Trail
parallels a residential driveway for a while before becoming a dirt road. 4/10 of a mile into your run, you'll come across a junction for the Old Pueblo Trail and the McMenemy Trail
1/10 of a mile later. Turn left to follow the McMenemy Trail
westward. The run will take you over the creek and through eucalyptus woodland before ascending up a series of switchbacks to the McMenemy Bench.
At this point, there's an intersection with the Girard Trail
, which heads to the north. Continue along the McMenemy Trail
by continuing straight (to the west). The McMenemy Trail
then descends into and climbs out of a small canyon to reach a ridge top where it hits a juncture with the Saddle Rock Trail
roughly 1.8 miles into the run. Run for another 4/10 of a mile as you descend Hot Springs Canyon's east wall over a few switchbacks. You'll then run into a T-intersection with the Hot Springs Trail
. At this point, the McMenemy Trail
comes to its end and you'll turn right to join the Hot Springs Trail
as it heads north.
Follow the Hot Springs Trail
for roughly 4/10 of a mile to reach a juncture with the Edison Catway
, a wide dirt road. Turn right here to follow the Edison Catway
as it traverses the mountainside passing turn-offs for both the Saddle Rock Trail
and the Girard Trail
. After following the Edison Catway
for about 1.75 miles to the east, you'll come across a junction with the San Ysidro Trail
at the bottom of the San Ysidro Canyon.
At this point you'll turn right, cross San Ysidro Creek, and follow the San Ysidro Trail
for roughly 1.2 miles as you descend through the canyon to reach the original trailhead and complete the loop.
Thanks to John McKinney, The Trailmaster, for sharing this trail description. To learn more about trails in California, check out his guides at The Trailmaster Store