Mil Potrero Highway Climb from San Moritz Drive
- long (6.2 km)
- 3.8 mi
- long (6.2 km)
- of climbing (336 m)
- 1,102 ft
- of climbing (336 m)
- average grade
- 5.4%
- average grade
- steepest 500 m
- 9.3%
- steepest 500 m
Elevation profile
From 4,987 ft at the bottom to 6,089 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 Mil Potrero Highway this week
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Is it safe to bike up Mil Potrero Highway?
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 Mil Potrero Highway
- How long and steep is the Mil Potrero Highway from San Moritz Drive climb?
- 3.8 miles (6.2 km) at 5.4% on average, climbing 1,102 ft (336 m) from 4,987 ft to 6,089 ft. The steepest half kilometre averages 9.3%. That makes it a Category 2 climb.
- Where does the climb start and finish?
- It starts at 34.85259, -119.14752, where Mil Potrero Highway leaves San Moritz Drive, and tops out at Apache Saddle at 34.86112, -119.2097.
- Is Mil Potrero Highway 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
- Linden DriveCat 3 · 1.2 mi at 11.6% · 732 ft · starts 0.6 mi away
- Zermatt DriveCat 3 · 1.1 mi at 12.5% · 702 ft · starts 0.7 mi away
- Freeman DriveCat 3 · 1.6 mi at 7.3% · 600 ft · starts 0.7 mi away
- Woodland DriveCat 3 · 1.8 mi at 10.5% · 981 ft · starts 0.7 mi away
- Bernina DriveCat 3 · 1.2 mi at 9.9% · 650 ft · starts 0.8 mi away
- Mil Potrero Highway near MaricopaCat 3 · 2.9 mi at 6.9% · 1,037 ft · starts 1.1 mi away
- Cerro Noroeste RoadCat 1 · 7.6 mi at 5.4% · 2,169 ft · starts 3.6 mi away
- Hudson Ranch Road near MaricopaCat 3 · 2.6 mi at 5.5% · 751 ft · starts 5.9 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.