Stone Creek Trail, Idyllwild, CA

Stone Creek Loop (Mt. San Jacinto State Park)

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  • Location: Stone Creek Campground, Mt. San Jacinto State Park, Idyllwild. The campground entrance is on Forest Route 4S02 (signed as Azalea Trails), on the east side of Highway 243, 19 miles south of Banning, 5.5 miles north of central Idyllwild and 9.8 miles north of the intersection with Highway 74. (If you are coming from the north, take the first left after the Allendale Ranger Station.) Follow the signs to the Stone Creek Campground. Stop by the office to pay the day use fee ($8 per vehicle as of this writing). Parking is available across from site 12 (the trail head begins between site 7 and 9). For a map of the Stone Creek campground, click here.
  • Agency: Mt. San Jacinto State Park/San Bernardino National Forest
  • Distance: 4.8 miles
  • Elevation gain: 850 feet
  • Difficulty Rating: PG
  • Suggested time: 2.5 hours
  • Best season: May – October
  • Dogs: Not allowed (allowed on leash at the campground)
  • Cell phone reception: Good for most of the route; weak to fair in some spots
  • Water: Available at a faucet near the trail head
  • Restrooms: Vault style toilets at the trail head
  • Camping/backpacking: The trail is located at the Stone Creek Campground in Mt. San Jacinto State Park. Other nearby campgrounds include Dark Canyon, Fern Basin and Marion Mountain. For information about dispersed camping in the San Bernardino National Forest, click here.
  • More information:  Map My Hike report here
  • Rating: 7

This enjoyable loop explores the southwestern corner of Mt. San Jacinto State Park. It features attractive mixed forests of oaks, pines and manzanita, glimpses of the higher peaks and the valleys to the west and Sawmill Flats, a secluded alpine meadow. While the hike lacks the dramatic panoramas that come higher up in the San Jacinto Mountains, it still makes a nice introduction to the area. The only drawbacks are occasional noise from Highway 243 and, for those who want to follow the loop described here, a mile and a half on pavement. Nevertheless, it’s a good route to keep in mind if you’re looking for a moderate hike near Idyllwild that’s not too strenuous for hot summer days and usually doesn’t get enough snow to present hazardous conditions during the winter.

From the parking area, head back toward the trail head between sites 9 and 7 and follow the signed trail east, through a virtual tunnel of manzanitas. You drop down to a dirt service road (0.2 mile) and bear left, beginning a steady climb to a ridge with views of Black Mountain to the north and the town to the south. Stay left at another junction and continue your ascent, first southeast and after a hairpin turn, north. At 1.7 mile, you reach a junction. Head left on a single-track trail which soon brings you to Sawmill Flats. This scenic spot was once the home of a sawmill (its foundation are still visible). There are several places to sit and enjoy the peace and quiet here beneath the tall pines. For hikers short on time, this makes a good turnaround point.

To continue, follow the trail as it heads north out of the meadow, back into a thick forest, mainly black oaks with a few pines and cedars. Between the trees are glimpses of Diamond Valley Lake and the surrounding hills far below to the west. You soon cross the boundary from the state park to the national forest, marked by a large fallen tree. There are a few spots where the trail is faint but it’s never too difficult to follow; other than the occasional tree blocking the route, the terrain will never be too difficult.

Eventually you reach the high point of the route (about 6,500 feet above sea level) and begin a descent to the Marion Mountain Trail, reaching it at 2.8 miles from the start. The Marion Mountain Trail, of course, is one of the more popular western routes to San Jacinto Peak and you may see ambitious hikers or backpackers beginning their long quest to the summit at this point. To complete this loop, turn left on the trail and head downhill. Keep an eye out for the signs; there are a few potentially confusing junctions but the route is fairly well marked. The trail skirts above the campground, taking in some good views of the valley to the west.

After half a mile on the Marion Mountain Trail, you reach its lower terminus. Turn left and follow the paved road downhill past the other campgrounds to the entrance of Stone Creek, back to the parking area.

Stone Creek Trail, Idyllwild, CA
Start of the Stone Creek Trail
Stone Creek Trail, idyllwild, CA
Junction with the service road
Stone Creek Trail, Idyllwild, CA
Looking north from the ridge on the Stone Creek Trail
Stone Creek Trail, Idyllwild, CA
Black oaks on the Stone Creek Trail
Sawmill Flats, Mt. San Jacinto State Park, CA
Sawmill Flats
Stone Creek Trail, Idyllwild, CA
Southwest view from the Stone Creek Trail
Marion Mountain Trail, Idyllwild, CA
Looking north from the Marion Mountain Trail
Marion Mountain Trail, Idyllwild, CA
Descending the Marion Mountain Trail

Text and photography copyright 2017 by David W. Lockeretz, all rights reserved. Information and opinions provided are kept current to the best of the author’s ability. All readers hike at their own risk, and should be aware of the possible dangers of hiking, walking and other outdoor activities. By reading this, you agree not to hold the author or publisher of the content on this web site responsible for any injuries or inconveniences that may result from hiking on this trail. Check the informational links provided for up to date trail condition information.


  1. This was a great hike, I hadn’t found it on other sites and since I’m close to the area it will be a go-to. Lots of uphill at first but it was manageable even for someone who hadn’t been out for a while. Lots of options to make it longer as well. Easy to get to, fee was $10 when we went but I think there may be another way in with no fee if you start from Marion Trail. PS it’s not Lake Perris you can see, it’s Diamond Valley Lake 🙂
    Thanks for this one!

  2. You are very welcome! It’s always nice to hear that people are finding good hikes on this site – that’s why I do it. Thanks for the correction about Diamond Valley Lake, I made the edit.

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