Mount San Antonio is a 8 mile heavily trafficked out and back trail located near Mount Baldy, California that features beautiful wild flowers and is rated as difficult. The trail is primarily used for hiking, nature trips, and bird watching and is best used from April until November.

Length8.0 miElevation gain3,897 ftRoute typeOut & back
HikingNature tripsBird watchingViewsWildflowersWildlifeRockyNo shade
Description
Waypoints (0)

FIRE CLOSURE: As of February 2021 there are closures in this park or area due to wildfire. For more information, please visit https://www.fs.usda.gov/alerts/angeles/alerts-notices.

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Reviews (554)
Photos (4,320)
Activities (599)
Completed (3,801)
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Eliot Yeh
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HikingGreat!

Good Hike!

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Sal Lopez
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HikingGreat!RockySnow

Hiked 4/10/2021. Very nice views.

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Kinjal Ajmera
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarMarch 7, 2021
HikingGreat!IcySnow

I did it clockwise - Baldy bowl going up and Devi’s backbone coming down (originally wanted to do out and back through Baldy bowl). Used microspikes from ski hut for about a mile and only poles going down. Very windy at the summit but gorgeous!! Such a contrast in views compare to summer, loved it!

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Arjen Cupido
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarMarch 6, 2021
Hiking

tough but rewarding trail (phone died out, so incomplete recording). the steepest climbs are at the end, so prepare for that. Doable if you're reasonably fit. We were happy we brought microspikes for a steep snowy part.

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Lily Aguirre
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarFebruary 22, 2021
HikingIcySnow

Went yesterday (Sunday 2/21). It was very windy/cold especially when you reach the peak. No snow until after the ski hut. conditions were not the best because it was sunny so the snow was slush. Highly recommend microspikes and poles. The last half mile gets a bit confusing because you can’t really see the trail. Awesome winter experience

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Eros Yong
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarFebruary 19, 2021
Hiking
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Stefan Schweizer
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HikingGreat!Snow

Hiked on Sunday the 14th. Dry trail all the way up to the ski hut. After that it was all firm snow, that provided enough support that snowshoes were not needed. The snow was also not icy and micro spikes were sufficient. Very windy on top so that I changed my original plan to hike down the devils backbone trail.

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Stephen Chang
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Hiking
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Collin Brady
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Hiking

One of the toughest hikes I've ever done, but so worth it for the views at the top! Hiked about 8 miles in total with 3,000ft elevation gain through snow most of the trip, so it was nice to have microspikes, but we lucked out and had a fairly warm day with no wind, and very clear views at the peak! Be sure to bring lots of water for this hike!

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Hiking Yoda
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarFebruary 6, 2021
HikingIcyScrambleSnow

I hiked this 2/6/21 as the first winter hike of my life. I had the intention of hiking up the ski hut and down the backbone. I started at 6am from Manker trailhead and the lot was packed. Mt Baldy road is completely clear from last weeks storm with no need for chains. I started with fleece socks, thermal underwear, convertible pants, a fleece shirt, a puffer jacket and a rain shell. I managed most of the hike with just the thermal shirt and pants though. There are a few spots of ice until you get to the fork for the ski hut route but nothing of concern. The next mile was covered in a bit more snow but also passable without spikes. I put my spikes on at about 1.5 miles but many folks did not use them until the ski hut which was another mile. This will come down to personal preference but that next mile to the ski hut was covered in pretty slippery snow and ice. After the ski hut, I began to feel very out of my comfort zone. The remaining 2 miles to the summit was not clear and I highly recommend some sort of GPS. You can tell folks who had broken in the trail had trouble finding their way because there were so many different paths cutting through. The snow was fairly compact too at this point but only for about a 2 foot width. If I ventured even slightly to either side, the snow was up to my thigh (I’m 5’6). Let’s just say it made for quite an interesting potty break. Normally the last mile is brutal as you scramble up the ski hut trail but with snow it was ten times that. I spent 2 hours on this last mile alone! Finally after various bouts of trekking through thigh high snow and fumbling for compact spots, I made it to the summit at noon. 6 hours to go about 4.5 miles. By this point, the temperatures had increased quicker then expected and the snow was melting into slush. I opted out of the backbone for safety and went back down the ski hut trail. The growing slush made the downward scramble very dangerous at times. I did not bring an ice axe but many hikers had them. I seldom use trekking poles but wouldn’t let them leave my side today. The melting snow was brutal to navigate through until after the ski hut where gravel began to take over. I kept my spikes on till I was maybe half a mile from where the ski hut trail meets the main trail. I finished around 4pm and drank 3L of water and a L of gatorade for reference. Hiking Yoda :)

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Robert Ocampo
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarJanuary 31, 2021
HikingSnow

Summited on a windless night, under a near(?) full moon on 1/30. LOTS of snow (all the way down to the trailhead), with drifts up to your waist in the Baldy Bowl. Fortunately, the trail up to the bowl is packed, and there is a packed switchback that heads up the west side of the bowl that’s like a groomed sidewalk (thank you to whoever broke the trail! Yeoman’s work!). The trail is less packed once on the ridge (as there seems to be less consensus as to the “right” way to go), but solid enough all the way to the top. I used crampons; it’s debatable whether you could get away with just micro spikes, but either way traction in some form is necessary at the moment.

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Michael Migaleddi
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HikingGreat!

Great hike up to Baldy! Easy to follow/navigate, not too difficult, and awesome views. I found the distance and elevation stats to be just about on point. The trail is pretty easygoing during the first half, then is a bit steeper during the second half. As of yesterday 1/17, there is no snow at the summit and only a few patches of snow along the way up. My partner and I had micro spikes in the pack but never busted them out, although some parts of the snowy sections were slick. They're packed down enough to be able to navigate through pretty safely, but I'd bring them if you're not very confident in your balance. It took us (both in very good shape) about 2 hours and 40 minutes to get to the top, and about 2 hours to get back down. There was a good amount of people on the trail, and we left at around 7:45AM. Overall it was almost perfect weather (a bit too warm for our taste) and a great hike for alpine training.

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Lakwi Perera
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Hiking
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Joel Morgan
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Hiking
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Vincent Li
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Hiking
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adam corona
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HikingBlowdown

hike was very intense going clockwise . weather was pretty good , high winds at the top felt like 20mph but over all amazing experience with this trail

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Rak Din
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarNovember 21, 2020
Hiking

5:15 AM start for great parking. Baldy Bowl to Ski Hut route to Baldy Summit. No ice or snow except on first major incline after Ski Hut (maybe 1/4 mile total) and only very small patches after with none on final half mile and none on summit. Still, I wore micro spikes after Ski Hut, but others were comfortable without because on descent I passed 122 hikers ascending between summit and Ski Hut and only 2 had them too. Others who ascended from other routes said those routes had more ice.

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Zach Lozano
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HikingGreat!IcySnow

This trail took 6.5 hours to complete. There was zero snow near the base, but the complete opposite near the summit. It was also super windy! (Like 40 knots) I recommend starting it early, bringing warm clothes and shoes that provide better traction for walking through snow. Happy hiking.

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Chad Millikan
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Hiking
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Craig Shelby
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HikingGreat!

Great Trail. Went up Mt Baldy trail to peak and returned on the loop via Devils Backbone. Plenty of people. Parking wasn’t too bad at 6:30 am on a Saturday.

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