South Fork Trail - Big Rock Creek

TRs for the San Gabriel Mountains.
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tallsquirrel
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Post by tallsquirrel »

I hiked the South Fork Trail from South Fork Campground to Islip Saddle on Sunday 4/28 with my brother. It starts on the desert side of the San Gabriels and ends at Hwy 2 in the middle high country below Mount Islip. I wanted to go after any snow on the upper trail melted but before it got too hot. We started at 10am from South Fork Campground, the temps in the high 70s. Big Rock Creek and the South Fork were both flowing well.

Lower South Fork, Big Rock Creek, looking back toward the trailhead:
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The trail is a nice gradual ascent above the creek for 5 miles. There were no steep inclines but there were some cliffy sections and scree across the trail in the first couple of miles. If you get vertigo easily (like my wife) you should not do this trail.

Some cliffy sections of the trail early in the hike:
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You can see Islip Saddle, a notch on the horizon, early in the hike:
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About 3 miles in a pleasant alpine breeze gave relief from the desert heat. Lots of Big Cone Douglas Firs at first, then mixed pines and white firs in the second half of the hike. Snow dusted ridges to our left were visible throughout most of the ascent. No ice or snow anywhere on the trail.

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About four miles in we hit a couple of side canyons with good water. I believe the second one was Reed Spring (as marked on map). Good thing too because we both finished our Camelbacks at the top! There were a few downed trees right across the trail, all passable enough.

Reed Spring (I think)
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The last mile of trail is most pleasant, with more shade and cool breezes:
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Getting close to the top:
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There is a little picnic area at Islip Saddle where we talked to a couple of PCTers. The noise on Hwy 2 was light as the gate was closed as Islip Saddle. I thought it was closed at Red Box too but a group of (loud) motorcycles showed up and some cars too.
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Nice desert views from the saddle:
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We had lunch then departed. Stopped at Reed Spring to filter water, refill our bladders. Had a nice cloud cover all the way back down.

Heading back:
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Girl Hiker
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Post by Girl Hiker »

Nice trip report. Looks like it was a very nice day for hiking. I love the red rocks.
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Sean
Cucamonga
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Post by Sean »

Thanks for the report. I like that trail a lot. The canyon scene is iconic of the Gabes. I gotta get back there and scramble around the creek more.

BTW - The gate is still closed at Red Box, but there is a detour through Upper Big Tujunga to reach the backcountry.
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Anthony
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Post by Anthony »

Great hike! South Fork to Vincent Gap is also nice, although I think I like this one better.
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