Backcountry Discovery Route – Idaho (IDBDR)
1200 miles of Idaho's wildest country
The Idaho Backcountry Discovery Route doesn’t mess around—it throws you straight into the Owyhee Desert’s moonscape terrain before dragging your rig through 1,200 miles of Idaho’s most unforgiving backcountry. Starting near Murphy in the state’s southwestern corner, this beast of a route climbs 85,000 vertical feet through sagebrush flats, alpine meadows, and dense forests before spitting you out at the Canadian border two weeks later. The IDBDR is Idaho’s only official BDR, and it earns that designation by threading together every type of terrain the state can throw at you—from technical rock crawls in the Sawtooths to water crossings that’ll test your nerve and your door seals.
A stock high-clearance 4×4 can handle the route, but don’t mistake “can handle” for “easy ride.” This is a 10-to-14-day commitment through country where cell service is a fantasy and the nearest fuel stop might be 200 miles behind you. The route maxes out at 7,300 feet elevation, meaning snow can shut down sections well into June and return by early October. Plan for June through September, and even then, pack for weather that can shift from desert heat to mountain snow in the same day. Water crossings dot the route—some seasonal trickles, others legitimate river fords that demand respect. The BLM and Forest Service manage different sections, so permits vary by area, but dispersed camping is legal and encouraged throughout most of the route.
This isn’t a weekend warrior trail. The IDBDR demands preparation, self-sufficiency, and a healthy respect for genuine remoteness. Breakdowns happen miles from cell towers, and recovery means either fixing it yourself or waiting for another traveler who may not come for days. But that isolation is exactly what makes it worth doing. You’ll cross terrain that most Idahoans have never seen, camp in places that don’t appear on any tourism brochure, and experience the kind of solitude that’s becoming extinct in the lower 48. The IDBDR doesn’t coddle you with scenic overlooks and interpretive signs—it simply delivers you through Idaho’s backcountry in its rawest form. Have a dirty day.
Trail Specs
| Difficulty | Difficult |
|---|---|
| Trail Type | Overland Route |
| Surface | Mixed |
| Features | Camping, Historic, Remote, Scenic, Water Crossings |
| Length (miles) | 1200 mi / 1931 km |
| Duration | 10-14 days |
| Max elevation (ft) | 7300 ft |
| Best season | June-September |
| Minimum vehicle | Stock 4WD high-clearance |
| Nearest town | Murphy, ID |
| Land manager | Various (BLM, Forest Service, State) |
| Permit required | No |
| Cell service | None |
| Water crossings | Yes |
| Dispersed camping | Yes |
| Official sources | ridebdr.com |
| Start coordinates | |
| End coordinates | |
| Copy both for Google Maps directionsClick to copy the directions URL · or open it directly in a new tab | |
| Find on Google | Search on Google → |
Location
Trail Conditions
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Frequently asked questions
Can a stock 4Runner or Wrangler handle the IDBDR without modifications?
A stock high-clearance 4WD will get through most of it, but aired-down tires and a skid plate will save you grief on the rocky sections. Lifted rigs with all-terrain tires have a noticeably easier time, especially in the northern segments.
What months is the IDBDR actually passable end-to-end?
June through September is the reliable window. Snow can block higher passes into late June, and early October storms can shut things down fast — check conditions on the northern sections before committing.
Do you need permits to run the IDBDR?
No single permit covers the whole route — it crosses BLM, Forest Service, and state land. Some dispersed camping areas have a 14-day stay limit. No permit is required just to drive it, but follow the posted rules on each land segment.
What's the hardest section and what makes it gnarly?
The northern Idaho sections near the Selkirk and Cabinet ranges throw the worst combination at you — loose shale climbs, narrow shelf roads with big drop-offs, and water crossings that run high after snowmelt. It's not technical rock-crawling, but one bad line on a shelf road is a serious problem.
How do you handle fuel and water for 1,200 miles with that much remote terrain?
Plan for 150+ mile gaps between reliable fuel stops in the remote central and northern sections — a auxiliary tank or fuel jugs are not optional, they're mandatory. Water crossings are frequent but treat everything you collect; carry at least a quality filter and don't count on towns for resupply more than once every few days.
Trail track
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