Glendora Mountain Road · GMR
The climb from the Glendora foothills to East Fork Road, passing the Glendora Ridge junction on the way.
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Gates may close for weather, fire restrictions or holidays. Check current vehicle access. Check current access ↗ · Reviewed 2026-09-09
Road shape
- Length
- 7.5 mi
- Bends
- 71
- Switchbacks
- 14
- Bends per mile
- 9.5
- Turning per mile
- 1070°
- Curviest rank
- 13of 128
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
- 2,059ft
- Climb per mile
- 275ft
- Highest point
- 3,440ft
- Steepest grade
- 6%
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 3/3 (Demanding) is our editorial rating of width, bends and sightlines; “Technical” describes character, not a target speed. Full method. Identified from:
- Reddit, r/Touge · Attention all who live in and around Los Angeles ↗
- Reddit, r/BikeLA · GMR closed to cars Labor Day ↗
- OpenStreetMap road data ↗ (1 ways in this trace)
Reviewed 2026-09-09. The trace shows selected road sections, not a navigation route.