Mount Hough Road Climb
- long (15.3 km)
- 9.5 mi
- long (15.3 km)
- of climbing (1,081 m)
- 3,547 ft
- of climbing (1,081 m)
- average grade
- 7.1%
- average grade
- steepest 500 m
- 14%
- steepest 500 m
Elevation profile
From 3,451 ft at the bottom to 6,998 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 Hough Road this week
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Is it safe to bike up Mount Hough 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. Most of this climb is a dirt road, and falls away from public roads rarely reach police reports. What the records show: no bike crashes were reported along the climb from 2021–2025.
Common questions about Mount Hough Road
- How long and steep is the Mount Hough Road climb?
- 9.5 miles (15.3 km) at 7.1% on average, climbing 3,547 ft (1,081 m) from 3,451 ft to 6,998 ft. The steepest half kilometre averages 14%. That makes it a Hors catégorie climb.
- Where does the climb start and finish?
- It starts at 39.96406, -120.9036, where Mount Hough Road leaves Quincy Junction Road, and tops out at Mount Hough Crystal Lake Road at 40.04645, -120.88903.
- Is Mount Hough Road paved?
- Mostly not: OpenStreetMap tags 98% of the climb as dirt or gravel. Dirt roads can be closed in fire season or after rain, so check with the land manager.
- 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
- La Porte Road from Pondside DriveCat 3 · 4.5 mi at 4.2% · 994 ft · starts 2.8 mi away
- Butterfly Valley Twain Road from State Highway 70Cat 3 · 2.7 mi at 5.9% · 843 ft · starts 4.3 mi away
- Argentine-Flournoy RoadHC · dirt · 6.5 mi at 7.7% · 2,664 ft · starts 6.6 mi away
- Squirrel-Taylor RoadCat 1 · dirt · 8.4 mi at 5.8% · 2,579 ft · starts 6.7 mi away
- Bucks Lake Road from Meadow Valley CreekCat 2 · 6.2 mi at 5.7% · 1,854 ft · starts 7.7 mi away
- Butterfly Valley Twain RoadCat 2 · 3.2 mi at 6.9% · 1,165 ft · starts 7.8 mi away
- La Porte Road near PortolaHC · 8.2 mi at 6.1% · 2,644 ft · starts 7.8 mi away
- La Porte Road near PortolaCat 3 · 2.8 mi at 4.1% · 614 ft · starts 7.8 mi away
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.