East Fork Road
The canyon road along the East Fork of the San Gabriel River, closing the loop between the foot of Glendora Mountain Road and San Gabriel Canyon Road.
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Check vehicle access on East Fork and Glendora Mountain Road before planning a loop; gates and fire restrictions can change. Check current access · Reviewed 2026-09-13
Road shape
- Length
- 5.2 mi
- Bends
- 23
- Switchbacks
- 0
- Bends per mile
- 4.4
- Turning per mile
- 353°
- Curviest rank
- 93of 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
- 792ft
- Climb per mile
- 152ft
- Highest point
- 1,858ft
- Steepest grade
- 4.9%
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
No posted limit has been verified for this selected section. Follow current signs.
No posted limit has been verified for this selected section. Follow current 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:
- Russ Brown · Glendora Mountain & Ridge Roads ride
- Dangerous Roads · Glendora Mountain Road
- OpenStreetMap road data (12 ways in this trace)
Reviewed 2026-09-13. 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.