Sugarloaf Mountain Hiking Guide
Sugarloaf Mountain rises just south of Big Bear City to nearly 10,000 feet, making it the highest point in the San Bernardino Mountains outside the San Gorgonio Wilderness — and unlike its taller neighbors, it requires no permit at all. The Sugarloaf National Recreation Trail climbs steadily through pine and fir to a broad summit with views in every direction. It is a long day with real elevation, and the absence of a quota system makes it a reliable fallback when San Gorgonio permits are gone.
Access and Trailhead
The most common approach is from the Green Canyon area south of Big Bear City, reached by forest roads off Highway 38. The roads are dirt and their condition varies through the season; check current status before driving, particularly in spring when snowmelt leaves them soft. An Adventure Pass is required. There are no facilities at the trailhead, so handle everything in Big Bear City first. The trailhead itself already sits high, which is what makes a 10,000-foot summit achievable as a day hike.
The Climb
The trail gains roughly 2,600 feet over about five miles, a grade that is sustained rather than steep, working up through Jeffrey pine and white fir with stretches of genuinely handsome old forest. Because so much of the route is shaded, the climb is more pleasant than the numbers imply — the difficulty here is duration and altitude rather than pitch. The tread is generally good with some loose decomposed granite on the upper sections. Junctions with forest roads appear along the way and warrant a map check.
The Summit
Sugarloaf's top is a broad, forested dome rather than a dramatic point, with openings that deliver the views in sections rather than all at once. Look south and San Gorgonio fills the horizon, close enough to pick out individual gullies. North and east the land drops toward the high desert. The summit's breadth means you can usually find a wind-sheltered spot to eat, which is not true on the more exposed peaks nearby. A summit register is often present.
Altitude Without a Permit
The appeal of Sugarloaf is precisely that it delivers a nearly 10,000-foot summit experience with no quota system, no reservation, and no ranger checking paperwork. That freedom comes with the same physiological reality as its permitted neighbors: the air is thin, the effort is real, and people who drove up from the coast that morning routinely underestimate it. Acclimatizing overnight in Big Bear makes a substantial difference. Carry far more water than the mileage alone would suggest.
Season and Weather
Summer and fall are the practical seasons. Snow covers the upper trail well into spring and the access roads are often impassable before then. Summer afternoons bring thunderstorms that build fast over these peaks, and a forested summit at 10,000 feet is not where you want to be for one — start early and plan to be descending by early afternoon. October delivers the clearest air and the most comfortable temperatures of the year, and the trail is close to empty on weekdays.
Hiking tips for Sugarloaf Mountain
- Check the condition of the dirt access roads before driving, especially in spring when snowmelt leaves them soft and rutted.
- Acclimatize overnight in Big Bear if you are coming from the coast — a 10,000-foot summit punishes same-day drives from sea level.
- Start early and be descending by early afternoon in summer, when thunderstorms build quickly over the San Bernardino high country.
- Choose this peak when San Gorgonio permits are unavailable; you get comparable elevation and views with no quota system at all.
- Check your map at the forest road junctions on the climb — they are the only spots on an otherwise clear trail where routes get confused.
Nearby trails to explore
- Pine Knot Trail
- South Fork Trail
- Bertha Peak
Hike this trail with TrailMates
Sugarloaf gives you a 10,000-foot summit without a permit lottery, and it is a better day with company. Use TrailMates to find Inland Empire hikers building high-altitude fitness for San Gorgonio, and share the drive out the forest roads. Download the TrailMates app to find a partner.