Berry Summit-Mad River Road Climb from Lamb Road
- long (11.2 km)
- 7.0 mi
- long (11.2 km)
- of climbing (940 m)
- 3,084 ft
- of climbing (940 m)
- average grade
- 8.4%
- average grade
- steepest 500 m
- 14.7%
- steepest 500 m
Elevation profile
From 2,480 ft at the bottom to 5,564 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 Berry Summit-Mad River Road this week
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Is it safe to bike up Berry Summit-Mad River 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 Berry Summit-Mad River Road
- How long and steep is the Berry Summit-Mad River Road from Lamb Road climb?
- 7.0 miles (11.2 km) at 8.4% on average, climbing 3,084 ft (940 m) from 2,480 ft to 5,564 ft. The steepest half kilometre averages 14.7%. That makes it a Hors catégorie climb.
- Where does the climb start and finish?
- It starts at 40.45054, -123.50217, where Berry Summit-Mad River Road leaves Lamb Road, and tops out on the road at 40.52097, -123.50923.
- Is Berry Summit-Mad River 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
- Lamb RoadCat 3 · 1.6 mi at 7.9% · 686 ft · starts 0.1 mi away
- Feldmiller RoadCat 1 · dirt · 4.3 mi at 10% · 2,283 ft · starts 1.0 mi away
- 94th StreetCat 3 · 1.2 mi at 8.6% · 558 ft · starts 2.8 mi away
- Miller Place RoadCat 2 · 4.9 mi at 6.7% · 1,736 ft · starts 3.5 mi away
- South Fork Mountain Road from Hidden Valley Ranch RoadCat 2 · 8.5 mi at 3.2% · 1,434 ft · starts 4.1 mi away
- Mc Clellan RoadCat 2 · 5.9 mi at 6.2% · 1,929 ft · starts 4.2 mi away
- In15ACat 3 · 2.4 mi at 7% · 896 ft · starts 5.5 mi away
- Anderson Ford RoadCat 3 · 1.3 mi at 10.4% · 709 ft · starts 5.7 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.