Cooley Ranch 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 Cooley Ranch Road climb?

2.9 miles (4.6 km) at 9.2% on average, climbing 1,398 ft (426 m) from 538 ft to 1,936 ft. The steepest half kilometre averages 15.8%. That makes it a Category 2 climb.

Where does the climb start and finish?

It starts at 38.78921, -123.15623, and tops out at Rockpile Road at 38.76547, -123.17299.

Is Cooley Ranch 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.

• Rockpile Road near CloverdaleCat 2 · 4.0 mi at 7.1% · 1,512 ft · starts 3.8 mi away
• Hot Springs Road near CloverdaleCat 3 · 2.1 mi at 5.8% · 663 ft · starts 4.7 mi away
• Rockpile Road near CloverdaleCat 3 · 2.3 mi at 5.2% · 627 ft · starts 5.1 mi away
• Rockpile Road near CloverdaleCat 3 · 1.1 mi at 9.2% · 561 ft · starts 5.9 mi away
• Highway 128Cat 3 · 1.7 mi at 6% · 541 ft · starts 6.5 mi away
• Old Skaggs Springs RoadCat 3 · 3.3 mi at 3.6% · 617 ft · starts 6.9 mi away
• Rockpile Road from North Branch RoadCat 3 · 1.6 mi at 11% · 932 ft · starts 7.1 mi away
• Hot Springs Road from S. Foothill BoulevardCat 3 · 1.8 mi at 7.9% · 741 ft · starts 7.3 mi away