Crispin 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 Crispin Road climb?

5.0 miles (8.1 km) at 7.5% on average, climbing 2,001 ft (610 m) from 85 ft to 2,087 ft. The steepest half kilometre averages 14.1%. That makes it a Category 2 climb.

Where does the climb start and finish?

It starts at 38.97518, -123.68615, where Crispin Road leaves Shoreline Highway, and tops out at Adams Ridge at 38.98687, -123.62233.

Is Crispin 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.

• Mountain View Road from Rancheria RoadCat 2 · 7.4 mi at 5.1% · 1,991 ft · starts 1.9 mi away
• Alta Mesa RoadCat 3 · 2.1 mi at 8% · 876 ft · starts 3.7 mi away
• Eureka Hill Road from Main StreetCat 3 · 3.1 mi at 4.3% · 696 ft · starts 4.5 mi away
• Zettler RoadCat 3 · 1.4 mi at 9.4% · 699 ft · starts 6.4 mi away
• Eureka Hill Road near Point ArenaCat 1 · 5.3 mi at 7.9% · 2,224 ft · starts 6.5 mi away
• Eureka Hill Road near Point ArenaCat 3 · 2.0 mi at 7.3% · 787 ft · starts 6.5 mi away
• Bill Owens RoadCat 3 · 2.2 mi at 5.3% · 627 ft · starts 7.2 mi away
• Iversen RoadCat 2 · 5.7 mi at 4.1% · 1,224 ft · starts 9.1 mi away