Salmon River Backcountry
Salmon River Backcountry is a expert 100+ miles off-road trail near Salmon, ID. It requires a properly built 4x4 with 35"+ all-terrain tires, 3"+ lift, 4WD with low range and is best run July - September. Stock trucks and Jeeps are not recommended; plan on the required modifications before attempting it.
Trail Conditions
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The Salmon River Backcountry is one of America's most extreme and committing off-road drives. Precipitous dirt roads cling to canyon walls thousands of feet above the river, with no guardrails, no cell service, and no turning back for miles at a time. This is the real deal, remote, exposed, and utterly spectacular.
Fun Facts
The Salmon River Canyon is deeper than the Grand Canyon in some places.
Lewis and Clark declared the Salmon River impassable, naming it 'The River of No Return.'
The Frank Church River of No Return Wilderness is the largest contiguous wilderness in the lower 48.
🛞 Tires
🔧 Suspension
⚙️ Drivetrain
🪢 Recovery
🛡️ Protection
📦 Other
Where to Camp
GPS Coordinates
Import into Gaia GPS, OnX Offroad, or Garmin
Map of Salmon, ID
5-Day Forecast
WHAT YOU'LL NEED
Expert-level terrain demands a purpose-built rig. Use every tool here before committing.
Tire Size Calculator
Convert tire sizes and compare diameter differences before you swap.
Running 35s or 37s? Confirm fitment and sidewall height before you go.
Gear Ratio Calculator
Find the right gear ratio after lifting or upsizing tires.
Low-range crawl ratio is everything on technical terrain, calculate yours first.
Wheel Fitment Calculator
Calculate backspacing and offset so wider wheels clear your suspension.
Extra wheel width = extra clearance on tight lines. Check offset before buying.
MPG Calculator
Estimate fuel economy after a tire upgrade, important for remote runs.
Remote Expert trails have no fuel stops. Know your range before you leave.
Trail Matchmaker
Not sure this trail matches your rig's current build? Find out fast.
Answer 6 questions and confirm Salmon River Backcountry is right for your setup, or find a better match.