State Highway 189 Climb
- long (5.4 km)
- 3.3 mi
- long (5.4 km)
- of climbing (192 m)
- 630 ft
- of climbing (192 m)
- average grade
- 3.6%
- average grade
- steepest 500 m
- 8.6%
- steepest 500 m
Elevation profile
From 5,138 ft at the bottom to 5,768 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 State Highway 189 this week
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Is it safe to bike up State Highway 189?
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 State Highway 189
- How long and steep is the State Highway 189 climb?
- 3.3 miles (5.4 km) at 3.6% on average, climbing 630 ft (192 m) from 5,138 ft to 5,768 ft. The steepest half kilometre averages 8.6%. That makes it a Category 3 climb.
- Where does the climb start and finish?
- It starts at 34.24942, -117.19387, where State Highway 189 leaves Lakes Edge Road, and tops out at North Road at 34.23896, -117.2336.
- Is State Highway 189 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
- Cumberland DriveCat 3 · 1.2 mi at 9.7% · 617 ft · starts 1.2 mi away
- Hook Creek RoadCat 3 · 2.6 mi at 4.8% · 659 ft · starts 3.4 mi away
- North Road from Lake Gregory Drive near San BernardinoCat 3 · 2.0 mi at 5.3% · 568 ft · starts 3.5 mi away
- North Road from Lake Gregory Drive near San BernardinoCat 3 · 1.7 mi at 6.7% · 614 ft · starts 3.6 mi away
- Arosa DriveCat 3 · 1.1 mi at 9.9% · 600 ft · starts 3.9 mi away
- Live Oak DriveCat 3 · 1.6 mi at 9.4% · 794 ft · starts 4.3 mi away
- Lake Gregory DriveCat 3 · 2.1 mi at 5.2% · 591 ft · starts 4.7 mi away
- Old Waterman Canyon RoadCat 2 · 3.0 mi at 8.4% · 1,355 ft · starts 6.5 mi away
Bike crash hotspots nearby
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.