Graton 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 Graton Road climb?

3.3 miles (5.3 km) at 3.3% on average, climbing 581 ft (177 m) from 125 ft to 705 ft. The steepest half kilometre averages 7.5%. That makes it a Category 3 climb.

Where does the climb start and finish?

It starts at 38.43395, -122.89063, where Graton Road leaves Upp Road, and tops out at Facendini Lane at 38.41635, -122.9356.

Is Graton 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.

• Occidental RoadCat 3 · 4.3 mi at 3.3% · 755 ft · starts 1.3 mi away
• Harrison Grade RoadCat 3 · 2.0 mi at 5.3% · 545 ft · starts 2.2 mi away
• Mount Jackson Resort RoadCat 2 · 4.4 mi at 6.5% · 1,516 ft · starts 5.5 mi away
• Marigold LaneCat 3 · 0.7 mi at 13.9% · 538 ft · starts 5.7 mi away
• Sunnyside DriveCat 3 · 1.2 mi at 8.2% · 538 ft · starts 6.0 mi away
• Burnside RoadCat 3 · 2.1 mi at 4.8% · 525 ft · starts 7.3 mi away
• Sweetwater Springs Road near WindsorCat 3 · 3.7 mi at 5.1% · 1,007 ft · starts 7.4 mi away
• Armstrong Woods RoadCat 2 · 5.5 mi at 4.6% · 1,332 ft · starts 7.5 mi away