Bottle Rock Road Climb from Brower Lane
- long (7.2 km)
- 4.5 mi
- long (7.2 km)
- of climbing (388 m)
- 1,273 ft
- of climbing (388 m)
- average grade
- 5.4%
- average grade
- steepest 500 m
- 10.5%
- steepest 500 m
Elevation profile
From 1,647 ft at the bottom to 2,920 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 Bottle Rock Road this week
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Is it safe to bike up Bottle Rock 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 Bottle Rock Road
- How long and steep is the Bottle Rock Road from Brower Lane climb?
- 4.5 miles (7.2 km) at 5.4% on average, climbing 1,273 ft (388 m) from 1,647 ft to 2,920 ft. The steepest half kilometre averages 10.5%. That makes it a Category 2 climb.
- Where does the climb start and finish?
- It starts at 38.94254, -122.81541, where Bottle Rock Road leaves Brower Lane, and tops out at Cold Water Creek Road at 38.88661, -122.7859.
- Is Bottle Rock 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
- Cold Water Creek Road from Glenbrook Road near ClearlakeCat 3 · 1.2 mi at 9.4% · 587 ft · starts 4.9 mi away
- Cold Water Creek Road from Glenbrook Road near ClearlakeCat 2 · 2.4 mi at 8.7% · 1,129 ft · starts 4.9 mi away
- Riviera Heights DriveCat 3 · 1.1 mi at 9.6% · 545 ft · starts 5.0 mi away
- Bottle Rock Road near ClearlakeCat 3 · 3.1 mi at 3.9% · 630 ft · starts 7.0 mi away
- Seven Mile RoadCat 2 · 2.6 mi at 9% · 1,211 ft · starts 7.2 mi away
- Bruner DriveCat 3 · 0.7 mi at 16.2% · 610 ft · starts 7.3 mi away
- Lakeview Road near ClearlakeCat 3 · 2.5 mi at 4.1% · 541 ft · starts 7.5 mi away
- Observation RoadCat 3 · 1.3 mi at 9.6% · 650 ft · starts 7.5 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.