Sun Valley to Ketchum Ridge Road
Sun Valley's technical high-country challenge
This high-country route winds through the mining remnants above Sun Valley, crossing Dollar Creek drainage before climbing to the Ketchum Ridge overlook at 8,400 feet. The trail passes the abandoned Triumph Mine ruins, where rusted equipment still marks the 1880s silver boom, before tackling a steep boulder field that separates weekend warriors from serious wheelers. Views stretch across the entire Sawtooth Range, with the trail dropping into Baker Creek drainage through a series of tight switchbacks.
Moderate to difficult depending on conditions, requiring high-clearance 4WD with low range for the rocky climbs and steep descents. Snow blocks access from October through June, making July through September prime time. No permits needed, but fuel up in Ketchum — the nearest services are 40 miles away. Dispersed camping available along Baker Creek with stellar dark skies for stargazing after a day of technical driving.
Trail Specs
| Difficulty | Difficult |
|---|---|
| Trail Type | Technical 4x4 |
| Surface | Dirt, Rock |
| Features | Camping, High Altitude, Historic, Scenic |
| Length (miles) | 18 mi / 29 km |
| Duration | 1-2 days |
| Max elevation (ft) | 8400 ft |
| Best season | July-September |
| Minimum vehicle | Modified 4WD with low range |
| Nearest town | Ketchum, Idaho |
| Land manager | Sawtooth National Forest |
| Permit required | No |
| Cell service | None |
| Water crossings | Yes |
| Dispersed camping | Yes |
| Official sources | fs.usda.gov |
| Start coordinates | |
| End coordinates | |
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Location
Trail Conditions
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Frequently asked questions
Can a stock Tacoma or 4Runner handle this trail, or do I need mods?
A stock rig will struggle. The rocky technical sections above 8,000 feet require a modified 4WD with low range, a suspension lift, and good off-road tires at minimum. Underbody skid plates are strongly advised given the exposed rock.
When does the trail typically open and close each year?
July through September is the reliable window. Snow lingers at elevation well into June, and early fall storms can shut it down fast — sometimes by mid-October. Check with Sawtooth National Forest before heading out if you're pushing the edges of that window.
Do I need a permit to run this trail or camp along it?
No permit is required to drive the trail. Dispersed camping is allowed under standard Sawtooth National Forest rules — 14-day limit, 300 feet from water sources and trails. No fee to enter, but confirm current fire restrictions before you go.
What's the hardest section and what should I actually expect?
The most demanding stretch is the rocky climb approaching the ridge above 8,000 feet — loose and embedded rock with steep off-camber exposure and limited room to recover. Line selection matters here and a mistake can put you on your rocker panels fast. Have a spotter if you're not confident reading the terrain.
Are there reliable water sources on trail, and how's cell service?
There are water crossings on the route, but treat everything — don't count on any source being clean without a filter. Cell service is nonexistent for the entire trail, so download offline maps before you leave Ketchum and let someone know your plan.
Trail track
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