Greenspot Boulevard 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 Greenspot Boulevard climb?

8.9 miles (14.3 km) at 3.7% on average, climbing 1,719 ft (524 m) from 6,732 ft to 8,451 ft. The steepest half kilometre averages 6.3%. That makes it a Category 2 climb.

Where does the climb start and finish?

It starts at 34.26213, -116.82332, where Greenspot Boulevard leaves East Big Bear Boulevard, and tops out at Onyx Summit at 34.19231, -116.71937.

Is Greenspot Boulevard 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.

• Monarch Flat RoadCat 1 · dirt · 4.1 mi at 10.4% · 2,251 ft · starts 6.3 mi away
• Radford Truck TrailCat 1 · dirt · 5.1 mi at 9.2% · 2,493 ft · starts 6.9 mi away
• Glass RoadCat 3 · 2.2 mi at 7.6% · 902 ft · starts 7.2 mi away
• Seven Oaks RoadCat 3 · 3.0 mi at 3.8% · 600 ft · starts 9.6 mi away
• Clark's GradeHC · dirt · 7.3 mi at 7.7% · 2,953 ft · starts 9.7 mi away
• Crystal Creek Road from JF3148Cat 2 · 3.1 mi at 9.4% · 1,526 ft · starts 11 mi away
• JF3150Cat 2 · 5.4 mi at 6.9% · 1,962 ft · starts 11 mi away
• Camp Rock RoadCat 3 · 4.1 mi at 3.7% · 794 ft · starts 12 mi away