Miller 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 Miller Road climb?

2.4 miles (3.8 km) at 4.2% on average, climbing 528 ft (161 m) from 1,335 ft to 1,864 ft. The steepest half kilometre averages 10.1%. That makes it a Category 3 climb.

Where does the climb start and finish?

It starts at 33.24173, -117.03283, where Miller Road leaves Misty Oak Road, and ends where the road ends at 33.25691, -117.00686.

Is Miller 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.

• Canyon Country LaneCat 3 · 1.3 mi at 10.3% · 682 ft · starts 4.4 mi away
• Paradise Mountain RoadCat 3 · 3.8 mi at 3.3% · 673 ft · starts 4.5 mi away
• Comm Tower RoadCat 3 · 0.9 mi at 14.6% · 656 ft · starts 4.6 mi away
• Pauma Heights RoadCat 3 · 2.3 mi at 7.3% · 906 ft · starts 4.7 mi away
• Valley Center Road from Omish LaneCat 3 · 3.1 mi at 4% · 666 ft · starts 4.8 mi away
• Cole Grade RoadCat 3 · 2.4 mi at 7.4% · 942 ft · starts 4.9 mi away
• Valley Center Road near EscondidoCat 3 · 2.1 mi at 5.8% · 653 ft · starts 4.9 mi away
• Highway 76Cat 2 · 7.2 mi at 5.1% · 1,949 ft · starts 5.2 mi away