Alum Rock Park: 9.9 Miles from AllTrails GPX

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Wednesday, 28 Oct 2026, 1:00 PM - 6:00 PM

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Hosted by: Steve G

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    Quick Facts

    Estimated Hike Time: 5.2 Hours
    Ascent: 2603 Feet
    Total Distance: 10.01 Miles
    Location: Alum Rock Falls Rd, San Jose, CA 95127, United States
    Trail: 9.9 Miles from AllTrails GPX
    Type: Hiking
    Purpose: Activity – Follow a pre-planned route or itenerary.
    Difficulty: Challenging – 2000 ft to 3000 ft of ascent. Suitable for hikers who have completed at least two Moderate hikes.
    Route Type: Loop
    Features: Views, River or creek, Forest
    Trail Traffic: Moderate
    Weather 1–6 PM: 60–63°F, partly sunny · 1% chance of rain · wind up to 3 mphHour by hour1 PM, 62°, Partly Sunny, 0% rain2 PM, 63°, Partly Sunny, 0% rain3 PM, 63°, Partly Sunny, 0% rain4 PM, 62°, Partly Sunny, 0% rain5 PM, 60°, Partly Sunny, 1% rainNational Weather Service forecast for the trailhead, updated hourly.
    Weather Feels Like: 60–63°F (the same as the temperature)
    Weather at the High Point (1,910 ft): about 55–58°F, humidity about 61–67% - 5°F cooler than the trailhead 1,345 ft below, and usually windier on exposed ridges
    Expected Trail Condition: Dry (0.23 in of rain in the last 10 days)
    Snow on the Ground: none on this route (none in the last 10 days either)
    Visibility: good - 10+ miles expected
    Expect: No weather concerns expected.

    Navigation

    Best Practice: As always, it is a good practice to confirm the night before that any app you use takes you to where you expect, by comparing the app destination with what is posted on your PC or Mac.
    Nearest Street Address: Most street addresses are approximate, and may be up to a couple of miles from the hike location. Use the Google Maps link or GPS coordinates when driving.

    Meet Us Here:

    How To Find Us: The GPS locations and the Google Maps link are accurate enough to find us by looking around with your eyes when you get there. Zoom in all the way.
    Trail Link: Open in Google Maps
    GPS in Degrees Decimal Format (Google Maps): 37.3971,-121.79813
    GPS in Degrees Minutes Decimal Format (Most Cars): 37° 23′ 49″ N,121° 47′ 53″ W

    Additional Information

    Meeting Location: At trail head
    Parking Fee: No
    How To Hike In The Sun: https://www.sleeplateandhike.com/tutorials-how-to-hike-in-the-sun/
    Facilities at Trail head: Restrooms and water at trail head.
    Shade Recommendation: Zoom in on the Satellite map below to see the shade.

    Summary

    AllTrails Map:
    https://www.alltrails.com/explore/custom-routes/alum-rock-north-and-south-rims-v6-66f6e2c?u=i&sh=pyl4xm

    Our Planned Route

    Download GPX File Printable Map (PDF) Garmin / bike computer (TCX)

    Total distance: 10.01 mi
    Max elevation: 1910 ft
    Min elevation: 563 ft
    Ascent: 2603 ft
    Total descent: 2603 ft

    Turn-by-turn directions (19 junctions)
    1. Start on Mineral Springs Loop Next junction in 340 ftmile 0.0
      ETA 0 hr 0 min (1:00 PM)
    2. 1Bear left onto Penitencia Creek Trail Next junction in 0.6 mimile 0.1
      ETA 0 hr 2 min (1:02 PM)
    3. 2Turn right onto South Rim Trail Next junction in 2.6 mimile 0.7
      ETA 0 hr 25 min (1:25 PM)
    4. 3Continue onto South Woodland Trail Next junction in 0.2 mimile 3.3
      ETA 1 hr 43 min (2:43 PM)
    5. 4Continue onto an unnamed trail Next junction in 320 ftmile 3.5
      ETA 1 hr 49 min (2:49 PM)
    6. 5Bear left onto North Rim Trail Next junction in 0.4 mimile 3.6
      ETA 1 hr 51 min (2:51 PM)
    7. 6Bear left onto Eagle Rock Trail Next junction in 0.2 mimile 4.0
      ETA 2 hr 5 min (3:05 PM)
    8. 7Bear left onto North Rim Trail Next junction in 0.2 mimile 4.1
      ETA 2 hr 9 min (3:09 PM)
    9. 8Bear left onto Eagle Rock Trail Next junction in 0.2 mimile 4.3
      ETA 2 hr 16 min (3:16 PM)
    10. 9Turn around and go back the way you came on Eagle Rock Trail Next junction in 0.2 mimile 4.5
      ETA 2 hr 24 min (3:24 PM)
    11. 10Continue onto North Rim Trail Next junction in 0.2 mimile 4.8
      ETA 2 hr 29 min (3:29 PM)
    12. 11Sharp left onto Todd L. Quick Trail Next junction in 0.5 mimile 5.0
      ETA 2 hr 37 min (3:37 PM)
    13. 12Turn left onto Boccardo Loop Trail Next junction in 1.8 mimile 5.5
      ETA 2 hr 55 min (3:55 PM)
    14. 13Continue onto Boccardo Spur Trail Next junction in 0.2 mimile 7.3
      ETA 4 hr 1 min (5:01 PM)
    15. 14Turn around and go back the way you came on Boccardo Spur Trail Next junction in 0.3 mimile 7.5
      ETA 4 hr 9 min (5:09 PM)
    16. 15Continue onto Boccardo Loop Trail Next junction in 1.2 mimile 7.7
      ETA 4 hr 15 min (5:15 PM)
    17. 16Turn left onto Todd L. Quick Trail Next junction in 0.4 mimile 9.0
      ETA 4 hr 45 min (5:45 PM)
    18. 17Continue onto Weather Loop Next junction in 0.1 mimile 9.4
      ETA 4 hr 54 min (5:54 PM)
    19. 18Bear left onto North Rim Trail Next junction in 0.4 mimile 9.5
      ETA 4 hr 57 min (5:57 PM)
    20. 19Continue onto an unnamed trail 470 ft to the endmile 9.9
      ETA 5 hr 8 min (6:08 PM)
    21. Arrive back at the startmile 9.9
      ETA 5 hr 10 min (6:10 PM)

    ETAs are the time from the start (with the clock time, from the event's start time), at 1.7 mph uphill, 2.7 mph downhill and 2 mph on level ground, plus 20 minutes for breaks spread over the hike. Worked out from the route and OpenStreetMap trail names. Trail signs on the ground may differ - carry a map.

    Created By: Steve G