Mountain Bike rentals, San Francisce area

   I'll be in SF next week.  Can anyone recommend someplace to rent a mountain bike on monday in the area (Marin County)?  

                      Thank you

Check this out for a list.

http://www.marintrails.com/biking/links/bikestores.html

Work in SF and live in Contra Costa County. Any questions?

A friend and I rented MTB’s in SF at Blazing Saddles. Rode them across the Golden Gate bridge and on the trails in Marin County. Fun!

I think Mill Valley Cycleworks rents bikes. Mill Valley is a great starting off spot if you want to ride Mt Tam which of course you must do if you are mountain biking in Marin.