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This mountain range is one of the best cycling locations in southern California. With over 30 climbs, perfect year-round cycling weather (besides the occasional snowfall at higher elevations!), and it's proximity to the LA area, this is an extremely popular cycling destination.
Ecologically, the San Gabriels have a mix of climates. The southern and eastern parts of the range is high alpine, and as you ride north or west you'll shift into a completely desert climate - often on the same ride, due to the small size of the range. Unlike most big mountain ranges, the weather is more or less constant throughout the year, with typical southern California sunny skies. Because of this, it may be easy to underestimate this mountain range, but it qualifies as a major one, spanning 63 miles across and including several peaks above 9,000 feet.
Technically the hardest climb in the area is Mt. Baldy (to the Notch), but after attempting it ourselves, left it off the list because it's not rideable on road tires (gravel ok!)
This page provides a comprehensive summary of the steepest, most scenic, and best climbs in the San Gabriel Mountains. These epic road bike climbs can be viewed on this page via the map (zoom in to view climbs in particular areas), by Climb Cards (photo and stats), or by a detailed list that can be arranged in metric or imperial units by difficulty, distance (longest climbs in the area), altitude gained, highest elevation (highest summit), average grade (sort by varying distances), lowest start point, etc. Visit the Climb Page to see details and photos for that particular bike climb.
The top 10 hardest road bike climbs in the San Gabriel's are: 1. Hwy 39 - Dawson Saddle, 2. Mt. Baldy, 3. Hwy 39 - Crystal Lake, 4. N4 - Table Mountain, 5. Lone Pine Canyon - Table Mountain, 6. Glendora Mountain Road, 7. Lone Pine Canyon - Blue Ridge Summit, 8. Chaney Trail - Mt. Lowe Road, 9. Mt. Wilson, and 10. Mt. Baldy from Hwy 39 (GMR)
1 - 25
26 - 50
51 - 75
76 - 100
over 100
