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Trail Flow (Ridden Direction)
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The colour categories are based on what percentage of riders are riding a trail in its intended direction.
  • > 96%
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Trail Last Ridden
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Trail Ridden Direction
The intended direction a trail should be ridden.
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Contribute Details
Colors indicate trail is missing specified detail.
  • Description
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  • Videos
Trail Popularity ?
Trailforks scans ridelogs to determine which trails are ridden the most in the last 9 months. Trails are compared with nearby trails in the same city region with a possible 25 colour shades. Think of this as a heatmap, more rides = more kinetic energy = warmer colors.
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Radar Time
x Activity Recordings
Trailforks users anonymized public ridelogs from the past 6 months.
  • mountain biking recent
  • mountain biking (>6 month)
  • hiking (1 year)
  • moto (1 year)
Activity Recordings
Trailforks users anonymized public skilogs from the past 12 months.
  • Downhill Ski
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  • Nordic Ski
Jump Magnitude Heatmap
Heatmap of where riders jump on trails. Zoom in to see individual jumps, click circles to view jump details.
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      Alum Rock Park, in the Alum Rock district of San Jose, California, is California's oldest municipal park, established in 1872 but serving as public land since the pueblo was established in 1777. Located in a valley in the Diablo Range foothills on the east side of San Jose, the 720 acre (2.9 km2) park offers 13 miles (21 km) of trails, varying from fairly level along Penitencia Creek to sharp switchbacks climbing to the ridges to the South Rim Trail and the North Rim Trail. The narrow floor of the valley includes a visitor center, a small museum/animal rehab facility, picnic areas, playgrounds, lawns, sand volleyball pits, mineral springs, lush plant life, woodlands, creek play opportunities, and occasional group camping.
      Primary Trail Type: Cross-Country
      Land Status: Municipal Park
      Parking google parking directions
      Activities Click to view
      Region Details
      • 2
      • 16
      • 8

      Region Status
      Caution as of Sep 17, 2020

      Stats

      Avg Trail Rating
      Trails (view details)
      27
      Trails Mountain Bike
      26
      Trails Hike
      28
      Trails Trail Running
      27
      Total Distance
      23 miles
      Total Descent
      4,044 ft
      Total Vertical
      1,784 ft
      Highest Trailhead
      2,083 ft
      Reports
      166
      Photos
      26
      Ridden Counter
      2,296

      Photos of Alum Rock Park Mountain Bike

      19 |
      May 18, 2022 @ 4:49pm
      May 18, 2022
      trail: Kestrel Trail
      28 |
      Feb 2, 2022 @ 9:13am
      Feb 2, 2022
      39 |
      Feb 1, 2022 @ 7:25pm
      Feb 1, 2022
      trail: Boccardo Loop
      43 |
      Jan 25, 2022 @ 9:03pm
      Jan 25, 2022
      trail: Baccardo
      46 |
      Jan 25, 2022 @ 8:53pm
      Jan 25, 2022
      trail: Baccardo
      56 |
      Oct 8, 2021 @ 5:51pm
      Oct 8, 2021
      trail: Todd Quick
      85 |
      Jul 25, 2020 @ 11:42am
      Jul 25, 2020
      29 |
      Jul 23, 2020 @ 7:28pm
      Jul 23, 2020

      Videos of Alum Rock Park Mountain Bike

      Todd Quick East [DH]
      1:42 | 37 | Jun 10, 2022 , San Jose
      Upper Calaveras Fault Trail
      2:48 | 80 | Apr 7, 2022 , San Jose
      Sierra Vista aka Don't Look Down on Strava
      3:51 | 63 | Apr 6, 2022 , San Jose
      Lower Calaveras Fault Trail | Sierra Vista...
      3:59 | 74 | Apr 5, 2022 , San Jose
      Alum Rock Park “Boccardo Loop” (Difficult)...
      4:17 | 95 | Jan 25, 2022 , San Jose
      Alum Rock Park “Boccardo” (Advanced) San...
      trail: Baccardo
      9:33 | 101 | Jan 25, 2022 , San Jose
      e-MTB | February 2021 Sunset Ride at Alum Rock...
      trail: Baccardo
      3:22 | 155 | Mar 28, 2021 , San Jose
      e-MTB | February 2021 Sunset Ride at Alum Rock...
      3:22 | 112 | Mar 28, 2021 , San Jose

      Recent Trail Reports

      Activity Feed

      usernameactiontypetitledate
      user #2977932LehanOVZBLuriddentrailPenitencia Creek Trail and 8 more
      Sep 20, 2022 @ 9:36pm
      Sep 20, 2022
      user #2093037theshonen8899addreportPenitencia Creek Trail and 5 more
      Sep 18, 2022 @ 9:39am
      Sep 18, 2022
      user #2740241polarsun00addreportLariat Trail
      Sep 11, 2022 @ 10:15am
      Sep 11, 2022
      user #1174431martinmckeeferywishlisttrailPeacock Gap Trail
      Sep 1, 2022 @ 6:03pm
      Sep 1, 2022
      user #1965032lisaonridewishlistrouteBoccardo-Aquila-Calaveras Route
      Aug 31, 2022 @ 8:11am
      Aug 31, 2022

      Recent Comments

      usernametypetitlecommentdate
      user #2093037theshonen8899trailBaccardoSteep, boring climb. No fun ways to go back...
      Aug 25, 2022 @ 11:28pm
      Aug 25, 2022
      user #1786475jasonmolendatrailWoodland TrailPosted sign says closed to bicycles.
      Oct 7, 2021 @ 8:19pm
      Oct 7, 2021
      user #2022547ashtondatrailBoccardo LoopYeah, I tried editing it, but it did not get...
      Sep 22, 2021 @ 3:55pm
      Sep 22, 2021
      user #932123aguynamedjoetrailSierra VistaThe whole trail is open now (May 6, 2021)
      May 6, 2021 @ 3:53pm
      May 6, 2021
      user #2538804nosyttrailBoccardo LoopThere's no reason why this should be...
      Apr 5, 2021 @ 3:50pm
      Apr 5, 2021

      Local Badges


      Activity Type Stats

      activitytypetrailsdistancedescentdescent distancetotal verticalratingglobal rankstate rankphotosreportsroutesridelogs
      Mountain Bike2621 miles3,399 ft8 miles1,785 ft
      #2,590#1,3342416522,145
      Hike2823 miles4,045 ft9 miles1,785 ft
      #2,095#1,221216698
      Trail Running2723 miles3,806 ft9 miles1,785 ft
      #2,047#1,19716650
      • By aguynamedjoe SCMTS Staff & contributors
      • Admins: SVMTB
      • #22307 - 7,101 views
      • alum rock park activity log | embed map of Alum Rock Park mountain bike trails | alum rock park mountain biking points of interest

      Downloading of trail gps tracks in kml & gpx formats is enabled for Alum Rock Park.
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