Scroll to detailed trail information
Imperial Gulch #315
Click to Reverse Track Direction
Status: Closed
Difficulty: Advanced
Uses: Mt Biking & Hiking & Equestrian & Motorcycle
Length: 6 miles
Start: 5,911'
End: 7,124'
Min: 5,911'
Max: 7,493'
Gain: 2,290'
Loss: -1,086'
fly your trail in 3D
Google Earth KML file
Download KML file above, open in Google Earth to see this trail in 3D!
don't get lost
GPX file (right click to download)
Download GPX file above, upload the track to your GPS or smartphone and you'll always know where you are!!
Trail Info
Thank you area motorcyclist volunteers and the Ketchum Ranger District Trail Crew for the many passes you have made cutting out, and re-cutting out, the trails in Greenhorn and beyond! Much of the Greenhorn drainage area burned in recent fires, so trees can come down at any time. Keep that in mind as you plan your outing and allow for extra time. For your safety, avoid burned areas if threatening weather is forecast.
Trailhead Forecast
Description / Access Information
Imperial Gulch #315: Open and cut-out by local volunteers with local motorcycle group Idaho Mountain Dirt Riders Assoc. Not brushed-back yet. Much young growth is bent across the trail in places. Volunteer efforts to cut-back the plants are being organized. Contact the BCRD WRVTC, Chris Leman if you can help. Text/call:208/7207713 or email him at

The trail climbs steadily through rolling terrain along the north side of the Deer Creek divide.  It is a great hike or ride in either direction with excellent views of the Pioneer Mountains.

Much of the Greenhorn Gulch drainage burned in recent fires, but the trails in the area are on the rebound. Repair and restoration efforts by the Forest Service, Wood River Bike Coalition, Wood River Land Trust, and other partners and volunteers for the Ketchum Ranger District were carried out during the summer of 2014. The trails were reopened after an intensive season of rebuilding. The rebuilding of the Imperial Trail included many hours of hard work by volunteers with the Boy Scouts of America, Youth Corp Crews, Sage School students, bike coalition volunteers. The Ketchum Ranger District Trail Crew put in weeks of work; leading the building and coordinating the volunteers.

From Ketchum, head south on Highway 75, or the paved Wood River Trail, for 5.5 miles to the Greenhorn/East Fork Road at the stoplight. Head right/west for 3.7 miles to the end of the Greenhorn Road at the FS Greenhorn Trailhead.

From Hailey, head north on the highway or the path. Its 5.5 miles to the Greenhorn/East Fork Road at the stoplight. Head left/west for 3.7 miles to the end of the Greenhorn Road at the FS Greenhorn Trailhead.

From the trailhead the Imperial Trail #315 is accessed by following the Greenhorn Trail #156 south from the parking area. The Greenhorn Trail immediately crosses the creek over two footbridges and then bends west to quickly gain the Imperial Trail on the left/south. 

For more detailed descriptions, topo maps, and information on the history, geology, and wildflowers of the Wood River Valley pick up a copy of Exploring Sun Valley online or find it at one of several local shops.

Downhilling Imperial Gulch
Share on Facebook