Trek Bicycle San Francisco Cow Hollow is your destination for the latest products from Trek and Bontrager, service and tune-ups for bikes of any brand, and local advice on the best riding in the Bay Area. Our shop was one of the pioneers of biomechanical bike fitting when we originally opened as City Cycle in 1986, and today we offer full fit services via Trek Precision Fit. We are conveniently located near the Presidio and Golden Gate Bridge in the city’s Cow Hollow neighborhood. We are proud advocates for the local cycling community, and offer support to local groups such as the Guardsmen and San Francisco Bicycle Federation. You’ll find our friendly staff out supporting great charity events like the annual G-Tour and Bike to Work Day, in addition to the frequent social rides we host from the shop. Stop in to see us before a ride along the Alpine Dam Loop or on many of the incredible routes above Silicon Valley—our staff would happy to tell you their favorite spots. We look forward to riding with you!