Quick Answer
Devil's Slide Trail is the most popular hike in Idyllwild, California, and it deserves every bit of that reputation. The trail climbs 1,700 feet over 2.5 miles via a famous series of granite-slabbed switchbacks to Saddle Junction, a major Pacific Crest Trail junction with sweeping views of the San Jacinto Mountains. It is a genuine workout that rewards you with PCT access and panoramas most SoCal hikers never see.
| Quick Facts | Details |
|---|---|
| Distance | 5.0 miles round trip |
| Time | 3-4 hours |
| Elevation Gain | 1,700 ft |
| Difficulty | Moderate |
| Trailhead Elevation | ~6,400 ft |
| Summit (Saddle Junction) | ~8,100 ft |
| Trailhead | Humber Park, Idyllwild |
| Permits | Adventure Pass (parking, $5) + Wilderness Permit (free, via Ranger Station) |
| Dogs | Allowed on leash on Forest Service trails only |
| Season | May to November (snow-free) |
🎒 Hiking Gear for Idyllwild | Explore Idyllwild
Why Devil's Slide?
Devil's Slide Trail is the gateway hike of the San Jacinto Mountains. It is the trail every Idyllwild visitor asks about and the route that introduces most hikers to the Pacific Crest Trail. It is not a casual nature walk, but it is not a brutal sufferfest either. Fit beginners make it. Experienced hikers appreciate how efficiently it gains elevation without the loose scree and road-walk approaches of other trails in the range.
Here is what makes it worth the early alarm:
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The Granite Switchbacks. The trail gets its name from the long, diagonal slabs of exposed granite it traverses on the way up. These granite "slides" are polished smooth by weather and millions of boot steps. They are beautiful to look at and slightly humbling to climb. This is the visual signature of the trail, and it earns the name.
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The PCT Connection. Saddle Junction sits at the intersection of five trails, including the Pacific Crest Trail. From here you can extend north toward San Jacinto Peak or simply have the quiet thrill of standing on one of the world's most famous long-distance footpaths. For many hikers, this is their first step on the PCT.
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The Views Open Up. As you climb the switchbacks, the pine canopy gives way and the Idyllwild valley falls away below you. You can see the Strawberry Valley, the cluster of Idyllwild rooftops, and the opposing ridgeline with Tahquitz Rock visible across the canyon. It is the view that makes the burn worth it.
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It Is Well-Maintained. Thanks to high traffic and regular trail crew attention, Devil's Slide is in excellent shape. No major route-finding is required, and there is no scrambling. Families with older kids handle it routinely.
Getting to the Trailhead
The Humber Park Trailhead is the most accessible trailhead in Idyllwild. It features a paved road all the way, clear signage, and a proper parking lot.
Driving Directions
From Idyllwild town center:
- Head east on North Circle Drive
- Turn left onto Fern Valley Road
- Follow Fern Valley Road approximately 1.5 miles to the Humber Park parking area at the road's end
From Los Angeles: 2.5 to 3 hours via I-10 East to CA-243 North through Banning
From San Diego: 2.5 hours via I-15 North to CA-79 North to CA-371 West to CA-243
Parking
Humber Park has a paved lot with roughly 60 to 70 spaces. It sounds like a lot until you see weekend demand.
- Weekends and holidays: Arrive before 8:00 AM. The lot routinely fills by 9 AM from May through October.
- Weekdays: Much easier. Midweek visits, especially Tuesday through Thursday, usually find open spots anytime before noon.
- Overflow: If the main lot is full, limited roadside parking exists on Fern Valley Road. Do not block fire lanes or driveways.
An Adventure Pass ($5/day or $30/year) is required and must be displayed on your dashboard. Purchase it at the Idyllwild Ranger Station (54270 Pine Crest Ave), local shops in town, or online through the USFS website.
Wilderness Permit
A free Wilderness Permit is required for all hiking in the San Jacinto Wilderness. For Devil's Slide, you must obtain your permit in person at the Idyllwild Ranger Station before your hike. During the peak season from Memorial Day to Labor Day, weekend day-use permits for this trail are subject to a strict quota and can "sell out" early in the day.
Trail Description: Mile by Mile
Miles 0 to 1.0: Into the Pines
From the Humber Park lot, the trail begins at the bulletin board kiosk. You will immediately enter a mixed-conifer forest of Jeffrey pine, white fir, and incense cedar. The area is fully shaded and cool even in summer. The grade starts moderate and stays that way.
The first mile is the most forgiving section of the trail. The path is wide, well-marked, and follows a gentle ascent through a drainage. You will cross a few seasonal stream crossings that run dry by midsummer but flow well in spring. Look for granite boulders emerging through the soil as the forest composition shifts with elevation.
Miles 1.0 to 2.0: The Granite Switchbacks
This is the famous section. The trail breaks out of the dense forest and begins crossing the open granite slabs, which are the literal "slides" of Devil's Slide. A long series of switchbacks hauls you up the exposed rock face at a consistent and relentless grade.
Views open up dramatically here. The Idyllwild valley sits below to the west, and on clear days you can spot the Pacific Ocean on the horizon. The switchbacks feel longer than they are. Just trust the trail and keep moving.
Insider Tip: There is one exposed section midway where the wind can whip hard. If you are hiking in early morning, this is where you will want to stop and add a layer. The body heat from climbing fools you into thinking you are warmer than you actually are.
Miles 2.0 to 2.5: The Final Push to Saddle Junction
The grade eases slightly as the trail rounds the upper ridge and enters a more sheltered zone of white fir and lodgepole pine. The granite gives way to rocky single-track. You will catch your first view of the high country above, specifically the ridgeline that leads toward San Jacinto Peak.
Saddle Junction (8,100 ft) announces itself with a large trail sign. Five trails converge here, including the PCT heading both north and south. It is a natural lunch spot, usually sheltered from the wind, and a genuine milestone. You are now standing on the Pacific Crest Trail.
From Saddle Junction: What's Next?
Saddle Junction is not just a turnaround point. From here:
- North on PCT to Wellman Divide (1.5 mi) to San Jacinto Peak (4.5 mi additional): The full peak day. This adds significant mileage and over 2,600 ft of gain from the junction. Do not attempt this without extra water and layers.
- East on PCT to Skunk Cabbage Meadow: A gentle 1-mile extension into the high-country meadows. It is worth it if you have the time and energy.
- Simply enjoy the junction: Most hikers eat lunch here, take photos of the PCT sign, and retrace their steps. That is the right call for most days.
What to Bring
- Water: Bring 2 liters minimum for the out-and-back hike. Bring 3 to 4 liters if extending to San Jacinto Peak.
- Sun protection: The switchback section is highly exposed. Bring a hat, sunscreen, and sunglasses.
- Layers: The junction can be 20°F colder than Humber Park. A windbreaker or fleece is essential.
- Snacks: A summit lunch at Saddle Junction is tradition.
- Microspikes: These are required before June and after October. The upper section holds thick ice.
- Trekking poles: These are incredibly worth it on the descent, as the steep switchbacks are hard on the knees.
Tips & What to Know
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The lot fills fast. Park before 8 AM on weekends. This is not an exaggeration. From May through October, Humber Park is the busiest trailhead in the San Jacinto Mountains. Midweek is dramatically quieter.
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Pick up your Wilderness Permit at the Ranger Station. Rangers check permits on the trail, especially at Saddle Junction. Do not skip this step, and remember that summer weekends have a quota system for this specific trail.
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Check trail conditions in spring before tackling the switchbacks. The upper granite slabs and the final approach to Saddle Junction can hold snow and ice into late May. The Idyllwild Ranger Station (909-382-2921) can tell you current conditions.
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The descent is where people get hurt. The granite slab section is smooth underfoot and steep. Take your time going down, especially if it is damp. Trekking poles help significantly.
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Do not summit-bag San Jacinto without planning ahead. The junction invites spontaneous decisions to keep going. However, San Jacinto Peak from Saddle Junction is several additional miles and thousands of feet of gain. Make sure you have enough water and daylight before committing.
FAQs
Q: How hard is Devil's Slide Trail?
A: It is rated moderate, but the 1,700-foot gain over 2.5 miles is real work. The granite switchbacks have no flat sections, meaning you are gaining elevation the entire way. Fit beginners complete it comfortably. Those who struggle with sustained climbs will find it challenging.
Q: Do I need a permit for Devil's Slide Trail?
A: Yes, you need two permits. A Wilderness Permit is required for the hike and must be picked up at the Ranger Station. You also need an Adventure Pass ($5/day) to park at Humber Park. Both are required, and rangers actively check.
Q: Can I bring my dog?
A: Yes, but with strict limits. Dogs are allowed on leash in the San Bernardino National Forest portions of the trail, which includes Devil's Slide up to Saddle Junction. However, if you continue north on the PCT toward San Jacinto Peak, you enter Mount San Jacinto State Park where dogs are strictly prohibited. Bring extra water, as the granite rock surface gets hot and has no shade in summer.
Q: What is Saddle Junction?
A: Saddle Junction is a major trail intersection at 8,100 feet where Devil's Slide meets the Pacific Crest Trail. Five trails converge here. It is the turnaround point for most day hikers and the starting point for extensions toward San Jacinto Peak.
Q: When does parking fill up?
A: On weekends from May through October, Humber Park is typically full by 9 AM. Arrive by 8 AM to guarantee a spot. Midweek parking is rarely an issue before noon.
Q: Is there cell service on the trail?
A: It is patchy. You may get intermittent service on the exposed switchbacks, but do not count on it at Saddle Junction. Download offline maps before leaving Idyllwild.
Q: Can I hike Devil's Slide in winter?
A: Experienced hikers do, but ice can make the granite switchbacks highly dangerous. Microspikes are essential from December through March, and heavy snow can close the upper section entirely. Always check with the ranger station before you go.
Keep Exploring Idyllwild
- What to Do in Idyllwild: Complete Guide : The full Idyllwild playbook including food, lodging, art, and every hike worth doing.
- Tahquitz Peak Trail Guide : The harder, quieter alternative. A 7-mile round trip with a 2,400 ft gain to a historic fire lookout with 360° views.
- Tahquitz Rock Climbing Gear List : Heading to the famous granite wall across the valley? Here is exactly what to pack.
- Explore Idyllwild : Maps, restaurants, lodging, and the full destination guide.
Last updated: February 2026. Trail conditions and parking details verified for accuracy. Always check current conditions with the San Bernardino National Forest Idyllwild Ranger Station at (909) 382-2921 before hiking.