Ammon Ridge Road Climb
- long (8.7 km)
- 5.4 mi
- long (8.7 km)
- of climbing (592 m)
- 1,942 ft
- of climbing (592 m)
- average grade
- 6.8%
- average grade
- steepest 500 m
- 11.1%
- steepest 500 m
Elevation profile
From 3,219 ft at the bottom to 5,161 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 Ammon Ridge Road this week
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Is it safe to bike up Ammon 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. What the records show: no bike crashes were reported along the climb from 2021–2025.
Common questions about Ammon Ridge Road
- How long and steep is the Ammon Ridge Road climb?
- 5.4 miles (8.7 km) at 6.8% on average, climbing 1,942 ft (592 m) from 3,219 ft to 5,161 ft. The steepest half kilometre averages 11.1%. That makes it a Category 2 climb.
- Where does the climb start and finish?
- It starts at 40.79855, -123.61478, and tops out at Berry Summit-Mad River Road at 40.78479, -123.68292.
- Is Ammon Ridge 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
- Buck Creek Road near Blue LakeCat 1 · dirt · 5.6 mi at 8.7% · 2,566 ft · starts 1.8 mi away
- South Fork Road near Blue LakeCat 3 · 2.1 mi at 4.7% · 528 ft · starts 3.9 mi away
- South Fork Road near Blue LakeCat 3 · 3.4 mi at 3.1% · 558 ft · starts 3.9 mi away
- Berry Summit-Mad River Road near Blue LakeCat 3 · 1.4 mi at 7.9% · 594 ft · starts 5.0 mi away
- Berry Summit-Mad River Road near Blue LakeCat 2 · 4.0 mi at 5.6% · 1,178 ft · starts 5.1 mi away
- Gray Creek Road from South Fork RoadCat 1 · dirt · 4.9 mi at 8.8% · 2,280 ft · starts 5.3 mi away
- Salyer-Mad River RoadHC · 11 mi at 4.9% · 2,887 ft · starts 5.4 mi away
- Friday Ridge Road near Blue LakeCat 2 · 6.0 mi at 6.4% · 2,001 ft · starts 5.5 mi away
Found from OpenStreetMap roads and USGS 3DEP elevation; ranked on shape only. Category 2: 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.