Mine Hill Trailhead – Mount Umunhum Road loop from Almaden Valley

Mine Hill Trailhead – Mount Umunhum Road loop from Almaden Valley

Hard

4.9

(3850)

10,079

riders

Mine Hill Trailhead – Mount Umunhum Road loop from Almaden Valley

03:58

43.9km

1,140m

Gravel riding

Hard gravel ride. Very good fitness required. Mostly paved surfaces. The starting point of the route is accessible with public transport.

Last updated: September 16, 2026

Tips

Includes a short out-and-back section

Your route doubles back at a waypoint. If this isn’t intentional, adjust the waypoint’s position.

After 27.8 km for 10 m

Waypoints

Start point

Bus stop

Get Directions

7.12 km

Mine Hill Trailhead

Highlight • Trail

At this trailhead Mine Hill Trail starts with an initial climb up from the parking lot into Almaden Quicksilver County Park. It is the main, longest trail, winding to the …

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10.1 km

Castillero Trail

Highlight • Trail

Quicksilver is a term used to refer to mercury. These lands, now transformed into an outdoor activity park, were once places where mercury mines were found.

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15.1 km

Hiker/biker trailhead parking at the bottom of the well-paved road reopened in September 2017, climbing sometimes steeply in switchbacks into the Sierra Azul preserve from Hicks Road to the former radar tower on the summit of Mt Umunhum

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25.5 km

Junction of Limekiln, Kennedy, and Woods trails

Highlight • Trail

Three of the most popular area trails come together here; depending on how ambitious you are, you might return to this juncture several times as you crank through the forested hills.

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27.8 km

Priest Rock Trail/Kennedy Trail Junction

Highlight • Trail

Ride a little (200m) past the intersection of Kennedy/PriestRock and you'll find a nice vantage point to your right: good for a rest and 360*-views.

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27.8 km

Kennedy Trail

Highlight (Segment) • Trail

When you reach the trailhead of "Kennedy Trail", a climb starts right away but ends very quickly and is even followed by a coast down a gentle downhill.

The "real" …

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34.1 km

Kennedy Road Sierra Azul Trailhead

Highlight • Trail

The Kennedy Road Sierra Azul Trailhead has a small parking area that fits about three cars, depending on size, and offers a shaded starting point. A portable toilet is available …

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36.9 km

Guadalupe River Valley

Highlight • River

Shannon Road intersects with Hicks Road here like Shannon Creek flows into Guadalupe Creek. To the south the urban sprawl gives way to farms and forested hills. The roads unfortunately have no bike lanes.

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43.9 km

End point

Bus stop

Way Types & Surfaces

Way Types