Cummings Creek Road Climb near Rio Dell

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 Cummings Creek Road near Rio Dell climb?

3.5 miles (5.6 km) at 7.5% on average, climbing 1,388 ft (423 m) from 171 ft to 1,558 ft. The steepest half kilometre averages 14.7%. That makes it a Category 2 climb.

Where does the climb start and finish?

It starts at 40.51323, -124.01709, and tops out on the road at 40.54421, -123.97299.

Is Cummings Creek 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.

• Redwood House Road near Rio DellCat 1 · 8.5 mi at 5.5% · 2,451 ft · starts 2.4 mi away
• Redwood House Road near Rio DellCat 3 · 2.2 mi at 6.9% · 814 ft · starts 2.4 mi away
• Cummings Creek Road near Rio DellCat 3 · 1.6 mi at 8.9% · 768 ft · starts 3.2 mi away
• Monument RoadCat 1 · 6.5 mi at 6.5% · 2,244 ft · starts 4.6 mi away
• Redwood House Road near Rio DellCat 2 · 3.1 mi at 6.9% · 1,129 ft · starts 5.5 mi away
• L P Haul RoadCat 3 · 1.1 mi at 13% · 748 ft · starts 8.3 mi away
• Tom Shaw RoadCat 3 · 2.2 mi at 5.4% · 636 ft · starts 8.3 mi away
• Upper Peaked RoadHC · dirt · 4.7 mi at 11.3% · 2,799 ft · starts 10.0 mi away