MT. TAM: LOOP FROM ROCK SPRING TO COLIER SPRING
Hike Date: Saturday, October 10, 2026
Leader: Ken Robin | k.robin@sbcglobal.net| 510 926-9220
SF Carpool Meeting Location: Whole Foods; 2001 Market St. @ Dolores (on the Dolores St. side); parking on the street or below. Please only show up at Whole Foods if you've arranged to meet your ride or driver there.
East Bay Carpool Meeting Location: Rockridge BART, bottom of escalator.
Carpool Meeting Times: 9:15 AM from SF /9:00 from Rockridge BART, leaving shortly afterwards.
Rating: Level 2.5
Mileage: 7 miles
Elevation Gain: 800'
Description: On a series of mostly shaded trails (including a couple of unofficial trails), we'll wend our way to Colier Spring, via the Benstein Trail, Kent Trail, and Cross-Country Boys. After lunch at scenic Colier Spring, we'll take an alternate series of trails back to Rock Spring. Redwoods, streams, and some little used trails. Dogs are welcome on Mt. Tam
Bring/Wear: Plenty of water, good hiking shoes, lunch, snacks, a hat, sunscreen, sunglasses and poles if you use them. AND chocolate!
Rain Policy: Hike will be canceled in the event of heavy rain
Contact the hikeleader if weather is questionable.
Trailhead Meeting Place: Rock Spring parking Lot - Mt. Tam
Google Maps Link
Trailhead Meeting Time: 10:00 AM
Trailhead Departure Time: 10:15 AM
Total driving distance, there and back: 43 miles from SF; 77 miles from Rockridge.
Passenger Carpool Fees from SF: $7 From Rockridge BART: $11
(You will be informed of carpooling arrangements by late Thursday or early Friday.)
Level-1
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Level-2
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Level-3 |
Level-4 |
Level-5 |
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easiest
< 5 miles
< 500' gain
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moderately easy
5-7 miles
< 1000' gain |
moderate
7-9 miles
< 1500' gain
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strenuous
9-12 miles
< 2000' gain
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very strenuous
12-15+ miles
>2000' gain |
