MotoRevRoute Twisty Staff Pick
Ponderosa Pine Scenic Byway
Boise to Stanley
- Distance
- 132 mi
- Riding Time
- 2h 59m
- Climb
- 8,668 ft
- Difficulty
- Moderate
- Surface
- Paved
- Character
- Twisty
- Saves
- 0
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Road Guide
- Best Season
- June to September.
- Closures
- The section between Lowman and Stanley can close in winter for avalanche danger.
- Fuel
- Fuel in Boise, Idaho City, Lowman and Stanley. Fill up in Lowman for the climb over Banner Summit.
- Watch For
- Avalanche and rockfall areas, wildlife, burn areas with debris on the road after storms, and no cell service on long stretches.
Weather Along the Route
Forecast at the hour you reach each point, from the riding time. Leave Departure empty to leave now. Forecast from Open-Meteo.
Idaho 21 climbs from Boise through the old mining town of Idaho City, follows the South Fork of the Payette past Lowman, and crosses Banner Summit before dropping into the Sawtooth Valley at Stanley. It is a long stretch of curves through forest and river canyon.
Stops
- StartBoise
- FinishStanley
