Mount Tam via Collier Trail

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Mount Tamalpais Watershed

Mount Tam via Collier Trail is a 20.0 kilometer moderately trafficked loop trail located near San Anselmo, California that features beautiful wild flowers and is rated as difficult. The trail is primarily used for hiking, nature trips, and bird watching and is accessible year-round.

Distance: 20.0 km Elevation Gain: 850 m Route Type: Loop

hiking

nature trips

bird watching

forest

views

wild flowers

wildlife

The watershed remains open to the public, with some restrictions, for recreational use daily from sunrise to sunset. The recent county health order prohibits vehicles and parking at the watershed, with the exception of people with disabilities who have the required disability placards or license plates for their vehicles. Parking for those with disabilities is available at our Sky Oaks parking lot. While the watershed remains open, visitors must comply with social distancing requirements of at least 6 feet. All volunteer programs that take place on the watershed have been canceled until further notice. NOTE: It has been reported that the road to the trailhead and parking lot are currently closed due to COVID-19. Please see the park's website for up to date information. Once you arrive at Lake Lagunitas, go to the right side of the lake and pick up the trail just over a small bridge past the picnic area. Once you're headed around the lake, look to the right after the second creek. Don't be fooled by a unmarked trailhead at the first creek, you will also see a sign for Collier Spring Trail. The trail is steep and narrow, but a lot of fun. There are several places where you will need to grab onto rocks with your hands to keep going. Once you arrive at Collier Spring (Clearly marked) you have a couple choices in routes. You can keep going straight up to the Pantoll Road, then pick up Internal trail that turns into Middle Peak Road that then leads to the East peak parking lot, or you can stretch it out a bit and pick up Northside Trail from Collier Springs that leads to Inspiration point. From Inspiration Point, you can take Eldridge Grade up to the East peak parking lot.

hiking
1 month ago

We went last weekend and you couldn't park at the trailhead (closed for covid), so that added some extra mileage (ended up being 14.5), but we had it all to ourselves - except for at the beginning, and at the top. I'd definitely recommend going counter-clockwise if you would rather go up the steep trail rather than down. It was nice to take the slow and easy fire road down from the top.

hiking
2 months ago

Long hike. Challenging but fun. :)

hiking
blowdown
scramble
6 months ago

That was a great, difficult climb but just the right distance...nome isayin?

hiking
scramble
9 months ago

hiking
Sun Apr 14 2019

I highly recommend doing this hike in the direction described. If you reverse it, as I did, you'll do most of your climbing on a fire road, then descend fast down a steep treacherous trail full of loose dirt and roots. In general, this trail involves lots of road walking. And the peak, which has great views, is next to a parking lot. Which means, after walking up the mountain you'll be shoulder to shoulder with crowds of people who took a 10 minute stroll from their car. Also parking at the trailhead is incredibly limited. This trail crisscrosses other parking lots with more ample parking.

hiking
Sat Jul 14 2018

great hike. was a hot day but most of the trail is covered with few uncovered. the park can be closed in the morning and would need to park a mile away on the streets. the redwood trees at the base is a well come change up other hikes. we did the reverse hike- going up anticlockwise. turned out to be a good s decision since the hike down in Collier spring trail is steep and treacherous. the hike up is not extremely steep but it is relentless. the view from the top is well worth it. in summer months carry lots of water, you will need it. hike up is easier compared to way down. trail down is damaged by spring run off and is very slippery due to soft gravel. encountered a swarm of bees and got stung too. so watch for unexpected company. overall rewarding and similar to Mt. Diablo hike.

hiking
Mon Apr 16 2018

Did it in reverse and glad I did. Was steep going down so I can only imagine what it was going up. Pretty lush right now. But lots of ticks. Be sure to check yourself and your animals.

hiking
2 months ago

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2 months ago

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3 months ago

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4 months ago

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5 months ago

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8 months ago

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10 months ago

hiking
Sat Jun 01 2019

hiking
Sat May 25 2019

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Fri Mar 22 2019

hiking
Mon Jan 21 2019

running
Sat Mar 31 2018

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Sat Jan 13 2018

hiking
Sat Dec 16 2017