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Hiking trails & Routes
United States
California
Marin County

Bon Tempe Lake Loop

Easy

3.4

(11)

73

hikers

Bon Tempe Lake Loop

01:59

6.43km

240m

Hiking

The Bon Tempe Lake Loop offers an easy hiking experience, guiding you through a varied landscape of quiet forest inlets, redwood groves, and open savannas. You will cover 4.0 miles (6.4 km) with an elevation gain of 772 feet (235 metres), which typically takes about 1 hour and 59 minutes…

Last updated: April 23, 2026

Waypoints

A

Start point

Get Directions

1

289 m

Bon Tempe Lake & Dam

Highlight • Lake

Wide earthen dam with a great gravel trail crossing. From the top of this dam excellent views of the Bon Tempe Lake, and down across Alpine Lake at a lower elevation.

Tip by

2

328 m

Dam and Reservoir

Highlight • Lake

3

881 m

Climb up Rocky Ridge Fireroad Trail for an excellent overloop of Bon Tempe Dam, with Alpine lake below

Tip by

B

6.43 km

End point

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Way Types & Surfaces

Way Types

5.73 km

705 m

Surfaces

4.27 km

1.49 km

664 m

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Elevation

Elevation

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

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Weather

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Today

Sunday 12 July

30°C

15°C

0 %

Additional weather tips

Max wind speed: 12.0 km/h

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Frequently Asked Questions

How long does it typically take to hike the Bon Tempe Lake Loop?

The Bon Tempe Lake Loop is an easy hike that generally takes around 2 hours to complete. This duration can vary depending on your pace and how often you stop to enjoy the scenery.

What is the terrain like on this trail?

The trail offers diverse and picturesque scenery, ranging from quiet forest inlets and redwood groves to open savannas and golden rolling hills. While mostly flat, there are a few short, slightly steep sections. The path is generally well-maintained, but some parts can be narrow, and it may be muddy in winter and early spring.

Is the Bon Tempe Lake Loop suitable for beginners or families?

Yes, this loop is considered an easy hike, making it suitable for a range of skill levels, including beginners and families. Its generally flat profile and well-maintained path contribute to its accessibility.

Are dogs allowed on the Bon Tempe Lake Loop?

Yes, dogs are permitted on the trail, but they must be kept on a leash at all times. Please remember that swimming or drinking from the lake or streams is prohibited, as it is a drinking water supply.

What is the best time of year to hike this route?

The trail can be enjoyed year-round. However, winter and early spring offer lush, green landscapes and cooler temperatures, though some sections might be muddy. Late spring and fall provide pleasant weather, while summer can be warm, especially on the more open 'Sunnyside' sections.

What wildlife can I expect to see along the trail?

The Bon Tempe Lake Loop is a fantastic spot for birdwatching, with abundant bird life including cormorants, common mergansers, osprey, great blue herons, pileated woodpeckers, and red-shouldered hawks. You might also spot small fence lizards.

Are there any notable landmarks or viewpoints along the way?

Absolutely! The route offers excellent views across the lake to Mount Tamalpais. Key highlights include the Bon Tempe Lake & Dam, another Dam and Reservoir, and a Dam Overlook where you can see Bon Tempe Lake above and Alpine Lake below.

Does the trail intersect with other paths?

Yes, the route incorporates sections of several official trails. You'll hike along parts of the Rocky Ridge Fire Road, Shady Side Trail, and Lower Berry Trail, among others.

What are the parking and access fees for the Bon Tempe Lake Loop?

There is a modest parking fee to access the area. Pit toilets are available near the parking area below the Bon Tempe dam, and additional restrooms, picnic tables, and drinking water can be found at the Lagunitas picnic area, about 1.5 miles into the hike.

Are there any specific regulations for hiking in the Mount Tamalpais Watershed?

Yes, as the trail is located within the Marin Municipal Water District's Mount Tamalpais Watershed, there are regulations to protect the drinking water supply. This includes prohibiting swimming or drinking directly from the lake or streams. Dogs must be on a leash, and a modest parking fee is required.

Are there options to extend the hike for a longer adventure?

Yes, for those looking for a longer outing, there are options to extend your trek to nearby Alpine Lake or Lake Lagunitas, which connect to the Bon Tempe Lake area.

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