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Routes
Mountain biking trails
United States
California
San Mateo County
Portola Valley

Old Ranch Trail – White Oak Trail loop from Portola Valley

Routes
Mountain biking trails
United States
California
San Mateo County
Portola Valley

Old Ranch Trail – White Oak Trail loop from Portola Valley

Hard

2.6

(19)

74

riders

Old Ranch Trail – White Oak Trail loop from Portola Valley

04:30

38.7km

1,080m

Mountain biking

Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike. The starting point of the route is right next to a parking lot.

Last updated: June 26, 2026

Tips

Includes a segment in which cycling is not permitted

After 30.8 km for 204 m

Waypoints

A

Start point

Parking

Get Directions

1

9.98 km

Stevens Creek Nature Trail

Highlight (Segment) • Trail

Stevens Creek Nature Trail and Skid Row Trail are just two different names for different segments of the same old dirt road that descends toward the main creek bed of Stevens Creek. Today, this trail is in the form of what I'd call a "singletrack on a shelf"—a fire road narrowed by forest debris into a single biking line that's only as wide as a singletrack. It's a moderately fun descent.

Tip by

2

11.0 km

Bella Vista Trail

Highlight (Segment) • Trail

Bella Vista Trail is another good singletrack trail. It will subject you to a serious but manageable climb, where the average slope barely ever exceeds 10% grade. This trail has very little tree cover and it provides some impressive views as you gain elevation.

Tip by

3

12.2 km

Old Ranch Trail

Highlight (Segment) • Trail

Old Ranch Trail is a singletrack offering lovely views onto the surrounding landscape.

Tip by

4

15.5 km

Here, the Steve's Creek Nature Trail and the Canyon Trail intersect. A lovely patch of grass surrounds the junction, making it an ideal spot for a break.

Tip by

5

20.3 km

White Oak Trail

Highlight (Segment) • Trail

White Oak Trail has been recently re-routed (completed in late 2010). Before this work, the upper reaches of this trail consisted of a steep, wide, and badly rutted "fire road". This segment of the trail is now replaced by a nicely meandering singletrack; initially exposed to the sky, and later under partial oak cover. The second half of the trail (the lower elevations) still follows the older path, which was a decent singletrack to begin with, and still is. I think that this change of White Oak Trail raises the desirability of Monte Bello Open Space for riders who are interested in singletrack trails. In my opinion, this brings this park to the same level as, say, the nearby Russian Ridge in terms of the level of biking trail quality.

Before the White Oak Trail re-routing, I used to do this ride as a clockwise loop (and used to show it on this page in the same way), traversing White Oak Trail uphill. That was because I found White Oak too short, steep, and wide to be interesting for descent. (The ruts may have been an interesting descent challenge for some, but still...) I used to think that it was at least a good climbing challenge to test one's mettle. After the re-routing, I've changed this to a counter-clockwise loop, because the beautiful singletrack that's the newer White Oak Trail is much more fun to descend than to climb, in my opinion.

The new White Oak Trail has some more off-camber spots than I would have expected from a new trail. Nothing too sketchy, but it does discourage you a little bit from speeding. When I come to think of it, the only other major singletrack trail in this park, Bella Vista Trail, also has quite a few off-camber sections. Perhaps it's something about erosion control. Or speed control. There's also at least one particular hairpin turn on White Oak that's a little over the top in its tightness. But maybe that's a good thing; those of us with superhuman bike control skills need some spots where they can test themselves as well.

The last quarter mile of White Oak Trail (after crossing a minor tributary creek over a bridge) has you pedaling uphill at a moderate grade.

Tip by

6

28.3 km

Borel Hill

Highlight • Summit

Spectacular 360° surround views from the top of the hill (2513 feet / 766 meters).

Tip by

30.8 km

Coal Creek Open Space Preserve (closed area)

Nature Reserve

B

38.7 km

End point

Parking

Loading

Way Types & Surfaces

Way Types

14.5 km

12.5 km

7.98 km

3.44 km

254 m

Surfaces

13.1 km

10.2 km

7.24 km

6.70 km

1.16 km

254 m

< 100 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (810 m)

Lowest point (200 m)

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Weather

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Today

Thursday 16 July

24°C

12°C

0 %

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Max wind speed: 10.0 km/h

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