Old Sumerville Creek Road Climb
- long (5.8 km)
- 3.6 mi
- long (5.8 km)
- of climbing (370 m)
- 1,214 ft
- of climbing (370 m)
- average grade
- 6.4%
- average grade
- steepest 500 m
- 10.8%
- steepest 500 m
Elevation profile
From 568 ft at the bottom to 1,781 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 Old Sumerville Creek Road this week
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Is it safe to bike up Old Sumerville Creek 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 Old Sumerville Creek Road
- How long and steep is the Old Sumerville Creek Road climb?
- 3.6 miles (5.8 km) at 6.4% on average, climbing 1,214 ft (370 m) from 568 ft to 1,781 ft. The steepest half kilometre averages 10.8%. That makes it a Category 2 climb.
- Where does the climb start and finish?
- It starts at 40.10773, -123.89647, where Old Sumerville Creek Road leaves Old Briceland Road, and tops out on the road at 40.07, -123.88661.
- Is Old Sumerville 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.
Other climbs nearby
- Old Briceland Road from Old Sumerville Creek RoadCat 3 · 2.6 mi at 6.9% · 945 ft · starts 0.0 mi away
- Ferren RoadCat 3 · 1.0 mi at 11.8% · 636 ft · starts 0.2 mi away
- Elk Ridge RoadCat 2 · 3.3 mi at 8.2% · 1,421 ft · starts 1.0 mi away
- Perry Lane from Perry Meadow RoadCat 3 · 1.2 mi at 11.1% · 719 ft · starts 1.1 mi away
- Briceland-Thorn RoadCat 3 · 3.1 mi at 3.7% · 607 ft · starts 1.1 mi away
- Perry Lane from Shop RoadCat 3 · 1.8 mi at 10.7% · 1,024 ft · starts 2.1 mi away
- Road BbCat 3 · 1.0 mi at 10.1% · 538 ft · starts 2.6 mi away
- Seely Creek RoadCat 3 · 1.4 mi at 7.5% · 548 ft · starts 3.2 mi away
Found from OpenStreetMap roads and USGS 3DEP elevation; ranked on shape only. Category 2: 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.