Skyline Boulevard Climb from Grass Valley Road
- long (6.4 km)
- 4.0 mi
- long (6.4 km)
- of climbing (224 m)
- 735 ft
- of climbing (224 m)
- average grade
- 3.5%
- average grade
- steepest 500 m
- 9.1%
- steepest 500 m
Elevation profile
From 449 ft at the bottom to 1,184 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 Skyline Boulevard this week
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Is it safe to bike up Skyline Boulevard?
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. The records here are also incomplete: most reports along it are filed under San Leandro, where only 42% of reported bike crashes have a map location, so the numbers here are too low. What the records show: no bike crashes were reported along the climb from 2021–2025.
Common questions about Skyline Boulevard
- How long and steep is the Skyline Boulevard from Grass Valley Road climb?
- 4.0 miles (6.4 km) at 3.5% on average, climbing 735 ft (224 m) from 449 ft to 1,184 ft. The steepest half kilometre averages 9.1%. That makes it a Category 3 climb.
- Where does the climb start and finish?
- It starts at 37.75108, -122.12329, where Skyline Boulevard leaves Grass Valley Road, and tops out on the road at 37.79248, -122.15407.
- Is Skyline Boulevard 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
- Campus DriveCat 3 · 1.3 mi at 9.2% · 633 ft · starts 2.0 mi away
- Redwood Road from Miller RoadCat 3 · 3.3 mi at 3.8% · 663 ft · starts 2.8 mi away
- Columbia DriveCat 3 · 2.0 mi at 6.2% · 653 ft · starts 4.6 mi away
- Pinehurst RoadCat 3 · 4.0 mi at 3.5% · 741 ft · starts 4.8 mi away
- Redwood Road from 35th AvenueCat 3 · 1.6 mi at 7.1% · 600 ft · starts 5.0 mi away
- Norris Canyon RoadCat 3 · 2.1 mi at 4.8% · 528 ft · starts 5.1 mi away
- Five Canyons ParkwayCat 3 · 2.0 mi at 5.7% · 610 ft · starts 5.8 mi away
- Rocky Ridge ViewCat 3 · 0.8 mi at 15.5% · 682 ft · starts 6.1 mi away
Places to ride to nearby
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.