close
3D
Trail Conditions
- Unknown
- Snow Groomed
- Snow Packed
- Snow Covered
- Snow Cover Partial
- Freeze/thaw Cycle
- Icy
- Prevalent Mud
- Wet
- Variable
- Ideal
- Dry
- Very Dry
Trail Flow (Ridden Direction)
Trailforks scans users ridelogs to determine the most popular direction each trail is ridden. A good flowing trail network will have most trails flowing in a single direction according to their intension.
The colour categories are based on what percentage of riders are riding a trail in its intended direction.
The colour categories are based on what percentage of riders are riding a trail in its intended direction.
- > 96%
- > 90%
- > 80%
- > 70%
- > 50%
- < 50%
- bi-directional trail
- no data
Trail Last Ridden
Trailforks scans ridelogs to determine the last time a trail was ridden.
- < 2 days
- < 1 week
- < 2 weeks
- < 1 month
- < 6 months
- > 6 months
Trail Ridden Direction
The intended direction a trail should be ridden.
- Downhill Only
- Downhill Primary
- Both Directions
- Uphill Primary
- Uphill Only
- One Direction
Contribute Details
Colors indicate trail is missing specified detail.
- Description
- Photos
- Description & Photos
- 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.
- most popular
- popular
- less popular
- not popular
ATV/ORV/OHV Filter
Max Vehicle Width
inches
US Cell Coverage
Legend
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
- Backcountry Ski
- Nordic Ski
- Snowmobile
Winter Trails
Warning
A routing network for winter maps does not exist. Selecting trails using the winter trails layer has been disabled.
x
Missing Trails
Most Popular
Least Popular
Trails are colored based on popularity. The more popular a trail is, the more red. Less popular trails trend towards green.
Jump Magnitude Heatmap
Heatmap of where riders jump on trails. Zoom in to see individual jumps, click circles to view jump details.
Trails Deemphasized
Trails are shown in grey.
Only show trails with NO bikes.
Save the current map location and zoom level as your default home location whenever this page is loaded.
SaveAlum 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.
source: Alum Rock Park - Wikipedia
Primary Trail Type: Cross-Country
Land Status: Municipal Park
Activities Click to view
- Mountain Bike
25 trails
- Hike
27 trails
- Trail Running
26 trails
Region Details
- 2
- 14
- 8
Region Status
Caution as of Nov 30, 2024Stats
- Avg Trail Rating
- Trails (view details)
- 26
- Trails Mountain Bike
- 25
- Trails Hike
- 27
- Trails Trail Running
- 26
- Total Distance
- 23 miles
- Total Descent
- 4,039 ft
- Total Vertical
- 1,784 ft
- Highest Trailhead
- 2,083 ft
- Reports
- 178
- Photos
- 38
- Ridden Counter
- 3,302
Popular Alum Rock Park Mountain Biking Trails
Alum Rock Park Mountain Bike Routes
title | rating | distance |
---|---|---|
Alumn Rock Top Loop -- Sierra Vista, Upper Calaveras Fault, Upper Sierra Vista | 4 miles | |
Boccardo-Aquila-Calaveras Route | 15 miles |
Photos of Alum Rock Park Mountain Bike
trail: Sierra Vista
4 |
Dec 22, 2024 @ 9:21pm
Dec 22, 2024
trail: Sierra Vista
4 |
Dec 22, 2024 @ 9:21pm
Dec 22, 2024
trail: Lariat Trail
13 |
Aug 25, 2023 @ 5:43pm
Aug 25, 2023
trail: Lariat Trail
15 |
Aug 25, 2023 @ 5:43pm
Aug 25, 2023
trail: Lariat Trail
14 |
Aug 25, 2023 @ 5:43pm
Aug 25, 2023
trail: Lariat Trail
29 |
Aug 25, 2023 @ 5:43pm
Aug 25, 2023
trail: Aquila Loop
44 |
Oct 24, 2022 @ 7:27am
Oct 24, 2022
trail: Upper Calaveras Fault Trail
49 |
May 18, 2022 @ 4:49pm
May 18, 2022Videos of Alum Rock Park Mountain Bike
trail: Todd Quick East
trail: Upper Calaveras Fault Trail
trail: Sierra Vista
trail: Lower Calaveras Fault Trail
trail: Boccardo Loop
trail: Baccardo
trail: Baccardo
trail: Penitencia Creek Trail
Recent Trail Reports
status | trail | date | condition | info | user |
---|---|---|---|---|---|
South Rim Access Road | Nov 30, 2024 @ 12:59pm Nov 30, 2024 | Variable | teosoft | ||
Aquila Loop | May 6, 2024 @ 7:27am May 6, 2024 | Ideal | joasod | ||
Penitencia Creek Trail | Aug 20, 2023 @ 10:01am Aug 20, 2023 | Dry | teosoft | ||
Peninsular Trail | Aug 20, 2023 @ 10:01am Aug 20, 2023 | Variable | teosoft | ||
Eagle Rock Trail | Aug 20, 2023 @ 10:01am Aug 20, 2023 | Dry | teosoft | ||
North Rim | Aug 20, 2023 @ 10:01am Aug 20, 2023 | Dry | teosoft | ||
Mineral Springs Loop | Aug 20, 2023 @ 10:01am Aug 20, 2023 | Dry | teosoft | ||
Todd Quick | Sep 16, 2022 @ 5:50pm Sep 16, 2022 | Dry | dangernoodle92808 | ||
Todd Quick East | Sep 16, 2022 @ 5:50pm Sep 16, 2022 | Dry | dangernoodle92808 | ||
Upper Penetencia Creek Trail | Sep 16, 2022 @ 5:50pm Sep 16, 2022 | Very Dry | dangernoodle92808 |
Activity Feed
username | action | type | title | date |
---|---|---|---|---|
2-wheels | add | photo | activity #63395965 and 1 more | Dec 22, 2024 @ 9:21pm Dec 22, 2024 |
teosoft | add | report | activity #62526504 and 1 more | Nov 30, 2024 @ 6:02pm Nov 30, 2024 |
Cesar6DsWMc | wishlist | route | activity #60094203 | Oct 6, 2024 @ 11:34pm Oct 6, 2024 |
santacruuz | comment | trail | activity #57840234 | Aug 26, 2024 @ 1:29pm Aug 26, 2024 |
santacruuz | ridden | trail | activity #57839978 | Aug 26, 2024 @ 1:23pm Aug 26, 2024 |
Recent Comments
username | type | title | comment | date |
---|---|---|---|---|
trail | XC trail with a steep climb and switchbacks. ... | Aug 26, 2024 @ 1:29pm Aug 26, 2024 | ||
trail | This is a short single track from the service... | Aug 26, 2024 @ 9:40am Aug 26, 2024 | ||
trail | Clock-wise is more fun. Counter-clockwise more... | May 19, 2023 @ 3:56pm May 19, 2023 | ||
trail | It's a steep and loose gravel road, not a... | Mar 26, 2023 @ 3:38pm Mar 26, 2023 | ||
trail | Steep, boring climb. No fun ways to go back... | Aug 25, 2022 @ 11:28pm Aug 25, 2022 |
Nearby Areas
name | distance | ||||
---|---|---|---|---|---|
Lake Cunningham | 5 km | ||||
Ed R. Levin County Park | 1 | 2 | 5.6 km | ||
Joseph D. Grant County Park | 12 | 19 | 1 | 6 km | |
Mission Peak Regional Preserve | 12 | 5 | 7.1 km | ||
Sunol Regional Wilderness | 6 | 16 | 2 | 7.8 km |
Local Badges
-
Completionist0 awarded
Local Mountain Biking Directory
-
Silicon Valley Mountain Bikers
-
Coyote Cycles
-
Upshift Cycles
-
Trailhead CycleryBike Shop
-
Calabazas CycleryBike Shop
-
Hyland Family BikesBike Shop
Activity Type Stats
activitytype | trails | distance | descent | descent distance | total vertical | rating | global rank | state rank | photos | reports | routes | ridelogs |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mountain Bike | 25 | 20 miles | 3,232 ft | 8 miles | 1,785 ft | #2,525 | #1,335 | 32 | 178 | 1 | 3,108 | |
Hike | 27 | 23 miles | 4,039 ft | 9 miles | 1,785 ft | #1,989 | #1,198 | 6 | 179 | 223 | ||
Trail Running | 26 | 23 miles | 3,802 ft | 9 miles | 1,785 ft | #1,980 | #1,192 | 179 | 112 |
- By aguynamedjoe & contributors
- Admins: SVMTB
- #22307 - 10,977 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.
You must login to download files.