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Mount Umunhum – Mount Umunhum loop from Leigh High School

Routes

Bike touring routes & trails

Mount Umunhum – Mount Umunhum loop from Leigh High School

Hard

3.1

(10)

riders

Mount Umunhum – Mount Umunhum loop from Leigh High School

03:18

41.9km

1,100m

Cycling

Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: June 8, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Sierra Azul Open Space Preserve

Almaden Quicksilver County Park

Waypoints

Start point

Bus stop

Get Directions

7.91 km

Guadalupe Reservoir

Highlight • Lake

Hicks Road winds around Guadalupe Reservoir. Here, you can see some of the best views of the lake. Please be cautious of cars.

Tip by

12.2 km

Lower Mount Umunhum Road

Highlight (Segment) • Climb

If you prefer loops, you can use the paved road for a quick efficient climb up to Mt Umunhum summit and use the excellent packed dirt and gravel mountain bike trail to come back down.

Tip by

20.9 km

At 3,486 feet, this peak stands as one of the highest in the region. It features a distinctive block-shaped radar tower that played a crucial role in the military's missile defense system. From this vantage point, you can enjoy a panoramic 360-degree view of the entire area.

Tip by

21.0 km

Mount Umunhum Summit

Highlight • Summit

Long closed as a military radar station, the peak has now become one of the most popular biking destinations thanks to the excellent, albeit steep, paved road to the top. There are several vista points, restrooms, drinking water, and information panels at the top and near the old radar tower.

Tip by

21.0 km

Mount Umunhum

Highlight • Summit

Opened in 2018, on the top of Sierra Azul Open Space preserve the Vista points and the former radar tower on the summit of Mt Umunhum provide stunning 360° views

Tip by

21.1 km

Mount Umunhum Road (climb)

Highlight (Segment) • Climb

Well paved road reopened in 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. It's a great workout, but don't be discouraged by the exaggerated 2950 feet elevation change estimate here by Komoot (in biking mode it even calculates 9750 feet): in reality it's closer to 1600 feet of climbing.

Tip by

38.2 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.

Tip by

41.9 km

End point

Bus stop

Way Types & Surfaces

Way Types

38.5 km

3.26 km

241 m

Surfaces

23.6 km

18.2 km

125 m

Elevation

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

Weather

Wednesday 8 July

26°C

13°C

-- %

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Mount Umunhum – Mount Umunhum loop from Leigh High School

Guadalupe Reservoir

Lower Mount Umunhum Road

Mount Umunhum

Mount Umunhum Summit

Mount Umunhum

Mount Umunhum Road (climb)

Guadalupe River Valley

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