Tompkins Hill Road Climb from Palmer Creek Road
- long (2.7 km)
- 1.7 mi
- long (2.7 km)
- of climbing (206 m)
- 676 ft
- of climbing (206 m)
- average grade
- 7.7%
- average grade
- steepest 500 m
- 10.5%
- steepest 500 m
Elevation profile
From 59 ft at the bottom to 735 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 Tompkins Hill Road this week
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Is it safe to bike up Tompkins Hill 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 Tompkins Hill Road
- How long and steep is the Tompkins Hill Road from Palmer Creek Road climb?
- 1.7 miles (2.7 km) at 7.7% on average, climbing 676 ft (206 m) from 59 ft to 735 ft. The steepest half kilometre averages 10.5%. That makes it a Category 3 climb.
- Where does the climb start and finish?
- It starts at 40.60567, -124.17968, where Tompkins Hill Road leaves Palmer Creek Road, and tops out at Tompkins Hill at 40.62693, -124.17978.
- Is Tompkins Hill 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
- Crosby RoadCat 2 · 2.9 mi at 8.9% · 1,355 ft · starts 3.4 mi away
- Mattole Road from Wildcat AvenueCat 2 · 6.9 mi at 5% · 1,811 ft · starts 5.0 mi away
- Tompkins Hill Road near FortunaCat 3 · 4.5 mi at 3.1% · 738 ft · starts 5.4 mi away
- Berta RoadCat 3 · 1.2 mi at 8.4% · 541 ft · starts 7.9 mi away
- Monument RoadCat 1 · 6.5 mi at 6.5% · 2,244 ft · starts 8.8 mi away
- Humboldt Hill RoadCat 3 · 1.7 mi at 6.2% · 541 ft · starts 9.1 mi away
- Cummings Creek Road near Rio DellCat 2 · 3.5 mi at 7.5% · 1,388 ft · starts 11 mi away
- Centennial RoadCat 3 · 3.2 mi at 4.1% · 696 ft · starts 11 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.