Highland Ridge Road Climb
- long (13.4 km)
- 8.3 mi
- long (13.4 km)
- of climbing (915 m)
- 3,002 ft
- of climbing (915 m)
- average grade
- 6.9%
- average grade
- steepest 500 m
- 14%
- steepest 500 m
Elevation profile
From 1,437 ft at the bottom to 4,439 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 Highland Ridge Road this week
Loading forecast…
Is it safe to bike up Highland Ridge 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 Highland Ridge Road
- How long and steep is the Highland Ridge Road climb?
- 8.3 miles (13.4 km) at 6.9% on average, climbing 3,002 ft (915 m) from 1,437 ft to 4,439 ft. The steepest half kilometre averages 14%. That makes it a Hors catégorie climb.
- Where does the climb start and finish?
- It starts at 40.71667, -122.63657, where Highland Ridge Road leaves Trinity Mountain Road, and tops out on the road at 40.7464, -122.71064.
- Is Highland Ridge Road paved?
- Mostly not: OpenStreetMap tags 100% 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
- American Mine RoadCat 1 · 4.3 mi at 10.7% · 2,444 ft · starts 1.2 mi away
- French Gulch Road from Main StreetHC · 6.8 mi at 7.5% · 2,687 ft · starts 1.3 mi away
- Tom Green Mine RoadHC · dirt · 6.8 mi at 7.6% · 2,736 ft · starts 1.7 mi away
- Trinity Mountain RoadHC · 17 mi at 4% · 3,566 ft · starts 2.4 mi away
- Crystal Creek Road from Eureka WayCat 3 · 3.8 mi at 4.8% · 961 ft · starts 3.3 mi away
- Lewiston Turnpike Road from Eureka WayCat 1 · 7.8 mi at 5.9% · 2,461 ft · starts 3.3 mi away
- Moran Mountain Road near Shasta LakeCat 3 · 1.4 mi at 10.4% · 774 ft · starts 3.5 mi away
- Eureka WayCat 2 · 8.0 mi at 4.9% · 2,054 ft · starts 3.9 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.