Chapman 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 Chapman Road climb?

2.2 miles (3.6 km) at 4.9% on average, climbing 581 ft (177 m) from 3,973 ft to 4,554 ft. The steepest half kilometre averages 16.2%. That makes it a Category 3 climb.

Where does the climb start and finish?

It starts at 33.49251, -116.65141, where Chapman Road leaves Barnfather Lane, and ends where the road ends at 33.46122, -116.651.

Is Chapman Road paved?

Mostly: OpenStreetMap tags 88% of the climb as paved, and the rest as dirt or gravel.

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.

• Burnt Valley RoadCat 3 · 2.0 mi at 5.4% · 574 ft · starts 4.4 mi away
• Hill StreetCat 3 · 2.4 mi at 5.5% · 689 ft · starts 4.4 mi away
• Tule Peak RoadCat 3 · 3.7 mi at 4% · 781 ft · starts 6.5 mi away
• Hog Lake Truck TrailCat 3 · 1.4 mi at 8% · 607 ft · starts 8.4 mi away
• Morris Ranch RoadCat 3 · 3.6 mi at 5.1% · 971 ft · starts 8.8 mi away
• Santa Rosa Road from Pines To Palms HighwayHC · dirt · 12 mi at 5.6% · 3,704 ft · starts 9.6 mi away
• Chihuahua Valley RoadCat 2 · 8.8 mi at 3.2% · 1,493 ft · starts 10 mi away
• Oak Grove RoadHC · dirt · 6.4 mi at 8.4% · 2,844 ft · starts 11 mi away