Quailmine 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 Quailmine Road climb?

2.5 miles (4.0 km) at 7.3% on average, climbing 965 ft (294 m) from 1,909 ft to 2,874 ft. The steepest half kilometre averages 16.1%. That makes it a Category 3 climb.

Where does the climb start and finish?

It starts at 37.66978, -120.08672, and tops out on the road at 37.69479, -120.0936.

Is Quailmine 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.

• Texas Hill RoadCat 2 · 2.6 mi at 8% · 1,102 ft · starts 2.9 mi away
• Red Cloud Mine RoadCat 3 · 1.3 mi at 8.8% · 597 ft · starts 4.8 mi away
• Bondurant Mine RoadCat 3 · 2.1 mi at 8.3% · 928 ft · starts 4.9 mi away
• Golden Chain HighwayCat 2 · 4.0 mi at 6.7% · 1,421 ft · starts 4.9 mi away
• Golden Chain HighwayCat 2 · 5.8 mi at 5% · 1,506 ft · starts 5.0 mi away
• French RoadCat 3 · 1.8 mi at 6.1% · 568 ft · starts 5.1 mi away
• Pinetree RoadCat 3 · 1.0 mi at 9.8% · 525 ft · starts 5.4 mi away
• Crown Lead RoadCat 2 · 1.9 mi at 10.9% · 1,109 ft · starts 5.4 mi away