Jamestown 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 Jamestown Road climb?

2.3 miles (3.8 km) at 5% on average, climbing 623 ft (190 m) from 1,440 ft to 2,064 ft. The steepest half kilometre averages 9.1%. That makes it a Category 3 climb.

Where does the climb start and finish?

It starts at 37.96065, -120.41808, where Jamestown Road leaves 5th Avenue, and tops out at Race Track Road at 37.99177, -120.4108.

Is Jamestown 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.

• Lyons Bald Mountain RoadCat 3 · 2.0 mi at 7.3% · 761 ft · starts 3.1 mi away
• State Highway 108 near SonoraCat 1 · 15 mi at 3.2% · 2,598 ft · starts 3.2 mi away
• Skyview DriveCat 3 · 1.0 mi at 12% · 646 ft · starts 3.3 mi away
• Mono WayCat 3 · 3.2 mi at 4% · 676 ft · starts 3.9 mi away
• Tuolumne RoadCat 3 · 4.6 mi at 3.4% · 814 ft · starts 4.1 mi away
• Covington RoadCat 3 · 1.6 mi at 11.3% · 974 ft · starts 5.2 mi away
• Yankee Hill RoadCat 2 · 5.3 mi at 4% · 1,115 ft · starts 5.3 mi away
• Parrotts Ferry RoadCat 3 · 4.3 mi at 4.5% · 1,037 ft · starts 5.6 mi away