South Branch Road Climb
- long (3.2 km)
- 2.0 mi
- long (3.2 km)
- of climbing (185 m)
- 607 ft
- of climbing (185 m)
- average grade
- 5.8%
- average grade
- steepest 500 m
- 10.9%
- steepest 500 m
Elevation profile
From 299 ft at the bottom to 906 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 South Branch Road this week
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Is it safe to bike up South Branch 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: no bike crashes were reported along the climb from 2021–2025.
Common questions about South Branch Road
- How long and steep is the South Branch Road climb?
- 2.0 miles (3.2 km) at 5.8% on average, climbing 607 ft (185 m) from 299 ft to 906 ft. The steepest half kilometre averages 10.9%. That makes it a Category 3 climb.
- Where does the climb start and finish?
- It starts at 38.70786, -123.32942, where South Branch Road leaves High Low Road, and tops out at Evans Ridge Road at 38.72316, -123.33551.
- Is South Branch 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.
Other climbs nearby
- Fuller Mount RoadCat 3 · 1.1 mi at 14.5% · 860 ft · starts 0.6 mi away
- Annapolis Road near CloverdaleCat 3 · 2.7 mi at 4.2% · 597 ft · starts 0.6 mi away
- Evans Ridge RoadCat 2 · 3.2 mi at 7.9% · 1,358 ft · starts 1.1 mi away
- Oak Hill L O RoadCat 3 · 3.3 mi at 5.9% · 1,020 ft · starts 1.6 mi away
- Stewarts Point-Skaggs Springs Road near CloverdaleCat 3 · 2.1 mi at 8.5% · 922 ft · starts 3.1 mi away
- Buckeye Creek RoadCat 3 · 0.6 mi at 17.3% · 584 ft · starts 3.2 mi away
- State Forestry RoadCat 3 · 1.0 mi at 13.6% · 738 ft · starts 3.7 mi away
- Stewarts Point-Skaggs Springs Road near CloverdaleCat 3 · 1.7 mi at 10.2% · 915 ft · starts 4.4 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.