Bondurant Mine Road Climb

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.

How long and steep is the Bondurant Mine Road climb?

2.1 miles (3.4 km) at 8.3% on average, climbing 928 ft (283 m) from 2,188 ft to 3,117 ft. The steepest half kilometre averages 20.8%. That makes it a Category 3 climb.

Where does the climb start and finish?

It starts at 37.72765, -120.03568, and tops out at Bondurant at 37.72974, -120.06227.

Is Bondurant Mine Road paved?

Mostly: OpenStreetMap tags 79% 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.

• Old Yosemite Coulterville Road from Bull Creek RoadHC · dirt · 9.7 mi at 5.8% · 2,943 ft · starts 1.2 mi away
• Red Cloud Mine RoadCat 3 · 1.3 mi at 8.8% · 597 ft · starts 2.5 mi away
• Texas Hill RoadCat 2 · 2.6 mi at 8% · 1,102 ft · starts 2.6 mi away
• Quailmine RoadCat 3 · 2.5 mi at 7.3% · 965 ft · starts 4.9 mi away
• Moore Pilot Ridge RoadCat 3 · 2.6 mi at 6.4% · 873 ft · starts 5.1 mi away
• Highway 120Cat 2 · 3.2 mi at 6.4% · 1,083 ft · starts 6.7 mi away
• Cherry Lake Road near SonoraCat 3 · 4.0 mi at 4.8% · 1,017 ft · starts 7.2 mi away
• Hardin Flat RoadCat 2 · 4.6 mi at 4.5% · 1,096 ft · starts 7.7 mi away