Mount Gleason Road Climb near La Cañada Flintridge
- long (3.8 km)
- 2.4 mi
- long (3.8 km)
- of climbing (277 m)
- 909 ft
- of climbing (277 m)
- average grade
- 7.3%
- average grade
- steepest 500 m
- 11.4%
- steepest 500 m
Elevation profile
From 5,509 ft at the bottom to 6,417 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 Mount Gleason Road this week
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Is it safe to bike up Mount Gleason 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: no bike crashes were reported along the climb from 2021–2025.
Common questions about Mount Gleason Road
- How long and steep is the Mount Gleason Road near La Cañada Flintridge climb?
- 2.4 miles (3.8 km) at 7.3% on average, climbing 909 ft (277 m) from 5,509 ft to 6,417 ft. The steepest half kilometre averages 11.4%. That makes it a Category 3 climb.
- Where does the climb start and finish?
- It starts at 34.37804, -118.15147, and tops out on the road at 34.37256, -118.17294.
- Is Mount Gleason Road paved?
- Mostly: OpenStreetMap tags 91% of the climb as paved, and the rest as dirt or gravel.
- 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
- Mount Gleason Road from Angeles Forest HighwayCat 3 · 4.8 mi at 3.5% · 876 ft · starts 4.1 mi away
- Bear Trap Canyon RoadCat 1 · dirt · 7.4 mi at 6.2% · 2,428 ft · starts 4.1 mi away
- Angeles Forest Highway from Big Tujunga Narrows Bridge near La Cañada FlintridgeCat 2 · 8.2 mi at 4.7% · 2,044 ft · starts 4.8 mi away
- Angeles Forest Highway from Big Tujunga Narrows Bridge near La Cañada FlintridgeCat 3 · 3.5 mi at 3% · 564 ft · starts 4.8 mi away
- Angeles Forest Highway near PalmdaleCat 3 · 3.7 mi at 4.8% · 938 ft · starts 4.9 mi away
- Santiago Truck Trail from Angeles Forest HighwayCat 3 · 1.9 mi at 6.4% · 633 ft · starts 5.5 mi away
- Upper Big Tujunga Canyon RoadCat 2 · 5.9 mi at 4.1% · 1,276 ft · starts 5.7 mi away
- Crown Valley RoadCat 2 · 6.8 mi at 3.3% · 1,171 ft · starts 5.7 mi away
Found from OpenStreetMap roads and USGS 3DEP elevation; ranked on shape only. Category 3: 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.