San Gabriel Canyon Road · SR 39
A canyon drive north from Azusa toward the Crystal Lake turnoff. Treat it as an out-and-back, not a connection through to Angeles Crest.
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Out-and-back: the northern connection to Angeles Crest is closed. Check current access · Reviewed 2026-09-09
Road shape
- Length
- 15.7 mi
- Bends
- 56
- Switchbacks
- 8
- Bends per mile
- 3.6
- Turning per mile
- 381°
- Curviest rank
- 83of 168
Measured from the OpenStreetMap centreline at a 20 m sampling step — road shape only, not a safety or speed judgement. How bends are counted.
Elevation
- Total climb
- 3,289ft
- Climb per mile
- 209ft
- Highest point
- 3,191ft
- Steepest grade
- 8%
Sampled every 100 m from USGS 10 m elevation data, a public-domain federal dataset. Total climb counts vertical change in both directions, so it does not depend on which way you drive. How elevation is measured.
Speed limits
Varies
Unverified
Limits vary by section. Follow posted signs.
Limits vary by section. Follow posted signs.
Posted signs always govern. How speed evidence is handled.
Sources
Difficulty 2/3 (Winding) is our editorial rating of width, bends and sightlines; “Medium speed” describes character, not a target speed. Full method. Identified from:
- SR 39 highway conditions
- OpenStreetMap road data (24 ways in this trace)
Reviewed 2026-09-09. The trace shows selected road sections, not a navigation route.
Drives that include this road
Roads nearby
Distances are approximate straight lines between road centers, not driving distances or direct connections.