Dos Rios Road Climb
- long (3.4 km)
- 2.1 mi
- long (3.4 km)
- of climbing (268 m)
- 879 ft
- of climbing (268 m)
- average grade
- 7.9%
- average grade
- steepest 500 m
- 9.2%
- steepest 500 m
Elevation profile
From 1,660 ft at the bottom to 2,539 ft at the top. Grades are averaged over each half kilometre, from USGS elevation data, so short ramps can be steeper than they show.
Weather at the top of Dos Rios Road this week
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Is it safe to bike up Dos Rios Road?
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: 1 bike crash was reported on or beside Dos Rios Road along the climb from 2021–2025.
Common questions about Dos Rios Road
- How long and steep is the Dos Rios Road climb?
- 2.1 miles (3.4 km) at 7.9% on average, climbing 879 ft (268 m) from 1,660 ft to 2,539 ft. The steepest half kilometre averages 9.2%. That makes it a Category 3 climb.
- Where does the climb start and finish?
- It starts at 39.6878, -123.48312, where Dos Rios Road leaves Redwood Highway, and tops out on the road at 39.68516, -123.45929.
- Is Dos Rios Road paved?
- Mostly: OpenStreetMap tags 59% 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.
Other climbs nearby
- Woodman Creek Road from Fisherman DriveCat 3 · 1.8 mi at 7.8% · 745 ft · starts 1.4 mi away
- Woodman Creek Road near WillitsCat 3 · 1.4 mi at 8.6% · 633 ft · starts 2.0 mi away
- Mill Creek Road from Valley DriveCat 3 · 1.6 mi at 8% · 692 ft · starts 2.4 mi away
- Green Bridge RoadCat 3 · 1.1 mi at 11.7% · 712 ft · starts 3.3 mi away
- Woodman Creek Road near WillitsCat 3 · 4.1 mi at 3.8% · 814 ft · starts 5.3 mi away
- Dunham RoadCat 2 · 4.8 mi at 6.7% · 1,690 ft · starts 6.4 mi away
- Poonkinney Road near WillitsCat 3 · 2.0 mi at 9.4% · 974 ft · starts 6.5 mi away
- Cherry Creek Road from Irvine Lodge RoadCat 3 · 1.5 mi at 8.3% · 676 ft · starts 6.8 mi away
Found from OpenStreetMap roads and USGS 3DEP elevation; ranked on shape only. Category 3: 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. Crashes: bike crashes reported within 100 ft of the climb, 2021–2025, from the California Crash Reporting System (CCRS), counted only where the report has map coordinates. Weather: National Weather Service. Access from OpenStreetMap tags; obey posted signs. How the data works.