Engineer Pass
Engineer Pass is a moderate 30 miles off-road trail near Lake City, CO, best run July - September. The gear list marks All-terrain tires, 4WD required and Skid plates as required. Stock trucks and Jeeps are not recommended without the required build parts.
Trail Conditions
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A classic San Juan Mountain pass connecting Lake City to Ouray at 12,800 feet. Above-treeline switchbacks traverse alpine tundra with views spanning 100 miles in every direction, making this one of Colorado's most iconic and rewarding off-road experiences.
Fun Facts
Engineer Pass reaches 12,800 feet, one of the highest drivable passes in Colorado.
The pass was a toll road for the mining industry in the 1870s.
Frank Hague Mine ruins near the summit are remarkably well-preserved.
🛞 Tires
⚙️ Drivetrain
🛡️ Protection
Closest campgrounds to Engineer Pass:
- Alpine Glow Campground · Ouray · 6 mi (straight-line)
Straight-line distance. Check the map for drive time.
GPS Coordinates
Import into Gaia GPS, OnX Offroad, or Garmin
Map of Lake City, CO
5-Day Forecast
Nearby Trails
WHAT YOU'LL NEED
A mild lift, all-terrain tires, and correct gear ratio will get you through this trail confidently.
Tire Size Calculator
Convert tire sizes and compare diameter differences before you swap.
Size up correctly, 33s vs 35s matters on moderate terrain.
Gear Ratio Calculator
Find the right gear ratio after lifting or upsizing tires.
Re-gear after a tire upgrade to restore trail torque and MPG.
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.
Bigger tires cut MPG. Plan your fuel stops for this trail.