San Gabriel Canyon Road Climb from West Fork Trail
- long (18.2 km)
- 11 mi
- long (18.2 km)
- of climbing (1,112 m)
- 3,648 ft
- of climbing (1,112 m)
- average grade
- 6.1%
- average grade
- steepest 500 m
- 15.5%
- steepest 500 m
Elevation profile
From 1,568 ft at the bottom to 5,217 ft at the top. Grades are averaged over each half kilometre, from USGS elevation data, so short ramps can be steeper than they show.
Weather at the top of San Gabriel Canyon Road this week
Loading forecast…
Is it safe to bike up San Gabriel Canyon Road?
We don't rate roads as safe or unsafe: crash counts can't say how risky a ride is, and roads people like to ride draw more riders, so they see more crashes. What the records show: 2 bike crashes were reported on or beside San Gabriel Canyon Road along the climb from 2021–2025, 2 of them serious or fatal.
Common questions about San Gabriel Canyon Road
- How long and steep is the San Gabriel Canyon Road from West Fork Trail climb?
- 11 miles (18.2 km) at 6.1% on average, climbing 3,648 ft (1,112 m) from 1,568 ft to 5,217 ft. The steepest half kilometre averages 15.5%. That makes it a Hors catégorie climb.
- Where does the climb start and finish?
- It starts at 34.24137, -117.869, where San Gabriel Canyon Road leaves West Fork Trail, and ends at a gate at 34.31178, -117.84053.
- Is San Gabriel Canyon Road paved?
- Yes, by its OpenStreetMap tags.
- How is the category worked out?
- From the climb's shape only: length in metres × average grade (%) of 16,000 or more for Cat 3, 32,000 for Cat 2, 64,000 for Cat 1 and 80,000 for HC. It describes how hard the climb is, not traffic or crashes.
- Where does this data come from?
- The climb is found from OpenStreetMap roads and USGS 3DEP elevation (every climb, not a list of famous ones). Access is from OpenStreetMap tags; gates and closures change, so obey posted signs. Crash counts are police reports in the California Crash Reporting System (CCRS) on data.ca.gov, counted where their map location is within 100 ft of the climb. The forecast is from the National Weather Service.
Other climbs nearby
- Rincon Red Box Truck TrailHC · dirt · 12 mi at 5.3% · 3,232 ft · starts 0.4 mi away
- Upper Monroe Truck TrailCat 1 · dirt · 7.2 mi at 5.5% · 2,110 ft · starts 2.8 mi away
- Crystal Lake RoadCat 3 · 2.4 mi at 5.8% · 732 ft · starts 5.4 mi away
- Glendora Mountain Road from East Fork RoadCat 2 · 5.3 mi at 5.7% · 1,591 ft · starts 5.6 mi away
- Glendora Ridge RoadCat 2 · 5.4 mi at 4.3% · 1,214 ft · starts 6.0 mi away
- San Gabriel Canyon Road from Ranch RoadCat 3 · 3.3 mi at 3.4% · 591 ft · starts 6.1 mi away
- Van Tassel MotorwayHC · 4.6 mi at 12.1% · 2,927 ft · starts 7.1 mi away
- Glendora Mountain Road from Elmgrove DriveCat 1 · 9.7 mi at 4.9% · 2,520 ft · starts 7.1 mi away
Bike crash hotspots nearby
Found from OpenStreetMap roads and USGS 3DEP elevation; ranked on shape only. Hors catégorie: length in metres × average grade (%) of 16,000 or more for Cat 3, 32,000 for Cat 2, 64,000 for Cat 1 and 80,000 for HC. It describes how hard the climb is, not traffic or crashes. Crashes: bike crashes reported within 100 ft of the climb, 2021–2025, from the California Crash Reporting System (CCRS), counted only where the report has map coordinates. Weather: National Weather Service. Access from OpenStreetMap tags; obey posted signs. How the data works.