Norrbom 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 Norrbom Road climb?

2.3 miles (3.8 km) at 7.4% on average, climbing 912 ft (278 m) from 105 ft to 1,017 ft. The steepest half kilometre averages 10.7%. That makes it a Category 3 climb.

Where does the climb start and finish?

It starts at 38.29733, -122.45808, where Norrbom Road leaves 1st Street West, and tops out on the road at 38.32577, -122.44857.

Is Norrbom 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.

• Vineyard LaneCat 3 · 2.4 mi at 5.3% · 686 ft · starts 1.2 mi away
• Grove StreetCat 2 · 3.5 mi at 6.9% · 1,273 ft · starts 2.2 mi away
• Moon Mountain RoadCat 2 · 2.6 mi at 7.8% · 1,063 ft · starts 3.0 mi away
• Cavedale RoadCat 2 · 5.1 mi at 7.1% · 1,936 ft · starts 3.3 mi away
• White AlderCat 3 · 1.4 mi at 9.6% · 712 ft · starts 3.7 mi away
• Hawks BeardCat 3 · 1.3 mi at 7.8% · 528 ft · starts 3.7 mi away
• Morningside Mountain Drive from Arnold DriveCat 3 · 1.8 mi at 6.6% · 636 ft · starts 4.1 mi away
• Morningside Mountain Drive from Sobre Vista RoadCat 3 · 1.0 mi at 11.3% · 623 ft · starts 4.1 mi away