Upper Green Valley 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 Upper Green Valley Road climb?

2.4 miles (3.9 km) at 4.2% on average, climbing 545 ft (166 m) from 4,337 ft to 4,882 ft. The steepest half kilometre averages 6.3%. That makes it a Category 3 climb.

Where does the climb start and finish?

It starts at 32.95741, -116.54042, and tops out on the road at 32.98402, -116.53464.

Is Upper Green Valley 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.

• Sunrise HighwayCat 3 · 2.5 mi at 4.1% · 551 ft · starts 1.8 mi away
• Lookout RoadCat 2 · 2.7 mi at 11.1% · 1,604 ft · starts 2.3 mi away
• Cuyamaca Forest RoadCat 3 · 1.2 mi at 11.2% · 686 ft · starts 3.6 mi away
• North Peak RoadCat 2 · 1.6 mi at 14.5% · 1,204 ft · starts 4.3 mi away
• Route 79 near San DiegoCat 3 · 5.1 mi at 3.4% · 922 ft · starts 4.4 mi away
• Mountain Circle DriveCat 3 · 0.9 mi at 10.9% · 531 ft · starts 4.7 mi away
• Mason Valley Truck TrailCat 1 · dirt · 7.8 mi at 6.3% · 2,605 ft · starts 5.7 mi away
• Engineers RoadCat 2 · 5.3 mi at 4.4% · 1,224 ft · starts 6.8 mi away