Millar 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 Millar Ranch Road climb?

1.2 miles (2.0 km) at 8.5% on average, climbing 554 ft (169 m) from 328 ft to 883 ft. The steepest half kilometre averages 11.2%. That makes it a Category 3 climb.

Where does the climb start and finish?

It starts at 32.73038, -116.93879, where Millar Ranch Road leaves Campo Road, and tops out at Millar Anita Lane at 32.71776, -116.9279.

Is Millar 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.

• State Route 94 from Campo RoadCat 3 · 4.6 mi at 3% · 728 ft · starts 0.2 mi away
• Miller Ranch Road from Millar Anita LaneCat 2 · 3.1 mi at 10.1% · 1,654 ft · starts 1.1 mi away
• Jamul DriveCat 3 · 3.0 mi at 4.1% · 653 ft · starts 1.7 mi away
• Alta Loma DriveCat 3 · 1.3 mi at 12.6% · 883 ft · starts 3.2 mi away
• Lyons Valley Road from State Route 94Cat 3 · 4.2 mi at 4.2% · 932 ft · starts 3.5 mi away
• Ramona AvenueCat 3 · 1.5 mi at 6.8% · 548 ft · starts 3.8 mi away
• Skyline Truck TrailCat 2 · 5.4 mi at 5% · 1,430 ft · starts 4.8 mi away
• La Cresta RoadCat 3 · 3.1 mi at 6.2% · 1,017 ft · starts 5.5 mi away