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2.7 miles
Distance
1,017 ft
Climb
-18 ft
Descent
00:31:40
Avg time
999 ft
Altitude change
1,158 ft
Altitude min
2,164 ft
Altitude max
1,166 ft
Altitude start
2,165 ft
Altitude end
7.1%
Grade
-16.3%
Grade max
32.4%
Grade min
2 miles
Distance climb
630 ft
Distance down
686 ft
Distance flat
00:31:40
Avg time
Alpine Road Details
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Activities
- Mountain Bike
- Hike
- Trail Running
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Riding AreaMonte Bello Open Space
Palo Alto, California -
AKADirt Alpine
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Difficulty Rating
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Voted DifficultyGreen (5 votes)
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Local Popularity100 in Mountain Biking [+]
- 45 in Trail Running
- 80 in Hiking
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Global Ranking
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State Ranking
-
Trail TypeMixed
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DirectionBoth Directions
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Climb DifficultyBlue
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Physical RatingModerate
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Dogs AllowedYes
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Land Owner
Alpine Road is an old regional road that used to connect the Town of Portola Valley to Page Mill Road. San Mateo County closed this road to vehicular traffic in 1979 due to road degradation and multiple washouts. Since then, there have been multiple culvert failures and washouts that have further degraded the roadbed and added sediment to local waterways, including nearby Corte Madera Creek.
A portion of Alpine Road runs adjacent to and through part of Coal Creek Open Space Preserve, linking to trails within the preserve and serving as an important regional trail connection for cyclists, equestrians and hikers alike.
The Alpine Road Regional Trail Improvement Project has corrected the degraded roadbed and failing culverts to prevent erosion and sedimentation issues, while improving the sustainability and resilience of this important regional trail connection. This project was identified by the community as a top 10 priority in Midpen’s Vision Plan and was funded in part by Measure AA bond funds.
Local Trail Association
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Please consider joining or donating to the local trail association to supportDonate to earn trail karma!
trail development & maintenance.
Recent Activity on Trail
Past Week
- 2 rides
- 30 miles average
6 Months
- 98 rides
- 22 miles avg distance
All
- 681 rides
- Last: Oct 30, 2026
| c1 | c2 | c3 | c4 |
|---|---|---|---|
January | February | March | April |
May | June | July | August |
September | October | November | December |
Alpine Road Trail Reports
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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)
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The colour categories are based on what percentage of users are riding a trail in its intended direction.
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- > 90%
- > 80%
- > 70%
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- > 6 months
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Directions to alpine-road trailhead
(37.342000, -122.201940)
Photos
10 more »
Videos
1 more »
mtb
0:04 |
656 |
Sep 21, 2018 , Palo Alto
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8 Reviews & Comments
sfmtbripley
Rangers are ticketing for riding in the closed section.
abarisone
Closed for construction work. Would have been nice if there was some signage down in the area where people park or at the bottom of the long road climb to get to the trailhead. Like others have mentioned, a lot of work was done to ‘repair’ the fire road last winter and its lost most of it’s fun factor. Either way it’s a scenic place to get a ride in. Definitely not a destination spot though, so look elsewhere for a weekend shred.
Lucilius
Starting Aug 28th 2023 the lower part up to Crazy Pete is closed for maintenance and expected to open again in November 2023.
Upper part is a fire road to take you from Crazy Pete all the way to Page Mill
Upper part is a fire road to take you from Crazy Pete all the way to Page Mill
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Nearby Trails
- Lake Trail 1,673 ft
- Coal Road Trail 2,890 ft
- Crazy Pete's 3,087 ft
- Crazy Pete's Road 4,843 ft
- Audobon Frontage 1 mile
Monte Bello Open Space
- By jpravetz SCMTS Reporter & contributors
- #63930 - 12,819 views
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