Winter Hiking in Big Bear and the SoCal Mountains: Trails, Gear & Safety
In Southern California, you don't wait for snow to come to you. You drive up to it. The beach can be 70 degrees on the same morning that Big Bear is under chain control and the Devils Backbone on Mt Baldy is glazed in ice. That gap is the whole story of winter hiking in Big Bear and the other SoCal mountains. This guide uses our trail guides for the San Bernardinos, the San Jacintos, the San Gabriels and the San Diego County ranges. We sort the gentle forest trails that make good snowshoe or microspike walks from the steep peaks that become mountaineering in winter. We cover the roads, permits and closures, and the hazard nobody forecasts here: there's no avalanche center for any of these ranges.
Snow is a drive, not a season
Most winter trips here start with a road, and the road decides the day. Caltrans can impose chain controls on Highways 18, 38 and 330 into Big Bear. When the signs say chains are required, you have to stop and fit them, and the CHP can cite you if you don't. Caltrans advises carrying chains that fit your tires all winter and checking QuickMap for live chain controls before you leave. Our guides record several other winter road limits. Mt Baldy Road can close during heavy snow, and chains are sometimes required. Snow typically closes Angeles Crest Highway near Mt Baden-Powell from late November through spring, and the Forest Service currently lists the highway closed between Islip Saddle and Vincent Gap. The forest roads to the Champion Lodgepole Pine and Sugarloaf Mountain are usually snowed shut through winter. In San Diego County, Sunrise Highway in the Lagunas can close after snowstorms, and the Palomar roads can ice over or close with little notice. Snow levels vary by storm, so check before choosing a trail.
Go up after the storm, not during it
The best snow days come one or two days after a storm clears, once roads are plowed and chain controls have eased. Driving up during a storm puts you in traffic on mountain highways with people who have never fitted chains. Leave early, fuel up in the valley, and keep a lower-elevation backup in case the highway closes.
Big Bear basin: sun-crust on the south slopes, ice on the north
Big Bear snow usually falls in a few big storms, and then weeks of strong sun go to work on it. South-facing slopes soften by midday and refreeze overnight into a hard, slick crust, while shaded north sides hold ice for weeks. Pick your trail and your hour with that in mind. The Woodland Trail is a 1.5-mile loop with 250 feet of gain on the north shore, short enough to snowshoe, though the numbered interpretive posts disappear under snow. Pine Knot Trail climbs 1,100 feet over 7.4 miles round trip from Aspen Glen to Grand View Point. In winter, it becomes a snowshoe or microspike outing where the junctions with forest roads are harder to spot. Cougar Crest is 6 miles with 1,300 feet of gain. Our guide calls it a winter option for experienced snowshoers, warning of ice and difficult route-finding without a packed track. Castle Rock is a 3-mile, 700-foot climb that gets slippery and potentially hazardous in snow. Skip the summit boulders when they're iced. Bertha Peak's exposed service road can stay frozen hard long after the forest below has melted out. The Alpine Pedal Path isn't plowed along its full length.
Gray's Peak is closed for eagles
The Forest Service closes the Gray's Peak trailhead from December 1 through April 1 to protect wintering bald eagles, and the closure is enforced. Dates can shift from year to year. Our guide suggests confirming the dates with the Big Bear Discovery Center, which is also the best place to ask about current snow on the other trails around the basin.
Idyllwild: easy forest snow, serious high country
Idyllwild sits above 5,000 feet, and the trails climb from forest to granite quickly. The Ernie Maxwell Scenic Trail is the winter pick. It's 5.2 miles with 850 feet of gain on a gentle grade, and our guide calls it a pleasant snowshoe that stays manageable in conditions that make steeper trails dangerous. It still needs a free San Jacinto Wilderness permit from the 24-hour kiosk at the ranger station, plus an Adventure Pass to park at Humber Park. Devils Slide is 5 miles with 1,700 feet of gain to Saddle Junction and can be snow-covered from December through March, needing microspikes or snowshoes. On Suicide Rock, 7 miles with 1,900 feet of gain, winter snow makes the upper trail a microspike outing and can bury the spur junction entirely. Tahquitz Peak is 8.5 miles with 2,300 feet of gain to a lookout over steep terrain, so treat it as a winter objective only for people with snow skills. San Jacinto Peak, 16 miles with 4,700 feet of gain to 10,834 feet, is a different thing altogether. Our guide says winter ascents are a serious mountaineering undertaking requiring ice axe and crampon proficiency.
Unmarked snow in the state park
Mount San Jacinto State Park says it doesn't groom snowbound trails, and there are no stakes or tree blazes to follow, so you need to navigate by map, compass and GPS. Hikers and snowshoers entering the state wilderness need a day-use permit. If you take the Palm Springs Aerial Tramway up, you arrive in that same high country. Call the Long Valley Ranger Station about conditions first.
Mt Baldy and the Cucamonga peaks: where winter turns deadly
Mt Baldy is where Southern California's winter hiking accidents keep happening. In late December 2025, the San Bernardino County Sheriff's Department searched for a 19-year-old who had fallen about 500 feet near the Devils Backbone and found two other hikers dead nearby. All three died, and strong winds kept rescue helicopters from hoisting them. The Forest Service then closed the Baldy trails, and in February 2026 it closed seven trails again before more storms. Those were Mt. Baldy, Baldy Bowl, Devils Backbone, Three T's, Icehouse Canyon, Chapman and Ontario Peak. Our Mount Baldy guide is 11 miles with about 3,900 feet of gain. It says winter and early spring are for experienced mountaineers with crampons and an ice axe, because the Devils Backbone is genuinely hazardous under ice. Even San Antonio Falls, a 1.5-mile, 300-foot walk in summer, becomes serious in winter. Refrozen snow covers the road bed above a steep runout, and people have been badly hurt sliding there. Icehouse Canyon, 7 miles and 2,600 feet, can need microspikes or snowshoes toward the saddle from December through March. Cucamonga Peak, 11.5 miles, holds snow and ice above 6,500 feet, and our Telegraph Peak guide says ice turns its steep upper slopes into a technical objective.
What a mountaineering objective means
Microspikes aren't crampons, and trekking poles can't stop a slide. On steep, icy slopes like the Baldy Bowl, you need real crampons, an ice axe, and training in self-arrest that you've actually practised. If you don't have all three, the summit isn't a winter hike for you. Turn around where the trail steepens onto hard snow, however good the day looks.
Lower snow in San Diego County: Cuyamaca, the Lagunas and Palomar
San Diego's mountains top out at about 6,500 feet, so snow comes and goes in days rather than months. That makes them the gentlest snow in Southern California, as long as the roads are open. Cuyamaca Peak is 5.5 miles with 1,700 feet of gain on a fire road to 6,512 feet. Our guide warns that snow and ice can make the road slippery enough to need microspikes. Stonewall Peak, 4 miles and 850 feet, can get snow on the summit, and the hand-railed final scramble over granite needs real caution when it's icy. Both are inside Cuyamaca Rancho State Park, which charges a day-use parking fee and doesn't allow dogs on these trails. In the Lagunas, Garnet Peak is 4 miles with 750 feet of gain, with ice on its summit scramble, and Monument Peak is a 6-mile, 1,100-foot ridge walk that's striking under snow. Both start off Sunrise Highway, which can close after storms; the Forest Service lists no fee at Penny Pines, Garnet's trailhead, but read the posted signs at other Laguna lots. On Palomar Mountain, the 3-mile Boucher Hill loop with 400 feet of gain is a gentle snow walk, and our guide suggests traction for visits in January and February.
Volcan Mountain after a storm
Our Volcan Mountain guide lists winter among its seasons. It's 5 miles with 1,300 feet of gain on a steady fire road from Farmer Road just north of Julian, and a summit dusting is a rare treat this far south. Arrive early, since snow draws crowds to Julian, and carry traction for shaded stretches.
No avalanche forecast, and the closures that stay in force
Avalanche.org lists no avalanche center for the San Gabriel, San Bernardino or San Jacinto mountains, and we couldn't find one for the San Diego ranges either. The nearest forecasts cover the Sierra Nevada. That means nobody publishes a danger rating for steep snow slopes like the Baldy Bowl or the gullies on San Gorgonio, so you have to judge them yourself. San Gorgonio Mountain, 19 miles and 5,500 feet, is another peak where our guide says winter needs crampons, an ice axe and the skills to use them. Some trails are off limits regardless of snow. Entry is still prohibited in the Eaton Fire Area Closure, which takes in Bailey Canyon, Henninger Flats, Millard Falls, Mt. Lowe, Sam Merrill, Echo Mountain and Eaton Canyon itself. The Mt. Wilson Trail is only partly open. You can hike the lower climb from Sierra Madre, but the upper trail and the Toll Road stay shut until the end of 2027. Gray's Peak's eagle closure applies all winter.
Passes and permits still apply
Winter doesn't suspend the paperwork. National forest trailheads in our guides need an Adventure Pass or interagency pass, and the San Jacinto and Cucamonga wilderness areas still need day-use permits. Cuyamaca Rancho and Palomar Mountain state parks charge day-use fees. Sort out your pass before the drive up.
Frequently Asked Questions
Where can beginners go snow hiking in Southern California?
Choose gentle, forested trails close to town. In Idyllwild, the Ernie Maxwell Scenic Trail is a good snowshoe on an easy grade. Big Bear's Woodland Trail is a short 1.5-mile loop. In San Diego County, the Boucher Hill loop on Palomar works well after a storm. Carry traction and an offline map.
Can you hike Mt Baldy in winter?
Only if you're an experienced mountaineer with crampons, an ice axe and self-arrest skills. The Devils Backbone and Baldy Bowl ice over, and hikers have died there, including three in late December 2025. The Forest Service has also closed Baldy-area trails during storms, so check current orders before you go.
Do I need chains to drive to Big Bear in winter?
Carry them. Caltrans can impose chain controls on Highways 18, 38 and 330. When signs say chains are required, you must stop and fit them, and CHP can cite you if you don't. Check Caltrans QuickMap before you leave home.