Lumpkin Road Climb from Enterprise Bridge
- long (14.9 km)
- 9.2 mi
- long (14.9 km)
- of climbing (799 m)
- 2,621 ft
- of climbing (799 m)
- average grade
- 5.4%
- average grade
- steepest 500 m
- 12.6%
- steepest 500 m
Elevation profile
From 968 ft at the bottom to 3,589 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 Lumpkin Road this week
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Is it safe to bike up Lumpkin 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 Lumpkin Road
- How long and steep is the Lumpkin Road from Enterprise Bridge climb?
- 9.2 miles (14.9 km) at 5.4% on average, climbing 2,621 ft (799 m) from 968 ft to 3,589 ft. The steepest half kilometre averages 12.6%. That makes it a Category 1 climb.
- Where does the climb start and finish?
- It starts at 39.53694, -121.33952, where Lumpkin Road leaves Enterprise Bridge, and tops out at Lumpkin La Porte Road at 39.60326, -121.24299.
- Is Lumpkin Road paved?
- Mostly: OpenStreetMap tags 90% 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
- Lumpkin Road near OrovilleCat 3 · 3.6 mi at 4.6% · 856 ft · starts 0.0 mi away
- Lake Haven WayCat 3 · 3.1 mi at 5.8% · 942 ft · starts 1.3 mi away
- Stringtown RoadCat 3 · 2.5 mi at 5.5% · 715 ft · starts 1.6 mi away
- Ponderosa Way near OrovilleCat 2 · 3.9 mi at 6.5% · 1,325 ft · starts 1.9 mi away
- Sucker Run Road from Ponderosa WayCat 1 · dirt · 6.0 mi at 6.9% · 2,172 ft · starts 2.2 mi away
- Lower Forbestown RoadCat 3 · 2.4 mi at 5.2% · 659 ft · starts 2.3 mi away
- Forbestown Road near OrovilleCat 2 · 6.1 mi at 4.6% · 1,483 ft · starts 2.9 mi away
- Old Forestown RoadCat 3 · 1.1 mi at 9.4% · 541 ft · starts 3.3 mi away
Found from OpenStreetMap roads and USGS 3DEP elevation; ranked on shape only. Category 1: 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.