Adventure seekers on a budget who want to tackle San Francisco's hills should check into Bay Area Bike Share. Purchase a 24-hour ($9) or 3-day membership ($22) from any station kiosk located throughout the city. Enjoy unlimited trips during one's membership for up to 30-minutes. If one wishes to continue the journey, simply return the bike to any station kiosk within a 30-minute period and pick up another bike.
For longer treks such as cycling across the Golden Gate Bridge where the trip will definitely last longer than 30 minutes before one can replace the bike, book a bike by the hour from one of these bike rentals shop located near Pier 29 such as Bay City Bike or Blazing Saddles. As a side note, the majority of those who rent bikes to cross over the Golden Gate Bridge then proceed to bike into nearby Sausalito and take the Blue and Gold Ferry back to San Francisco. The majority of this particular trip is on flat land though one will find some people walking their cycles up a few hilly areas. Be sure to allow ample time for the return ferry trip back, as the line can get long especially on weekends and warm weather days.
Those looking to tool around San Francisco in style might want to bring along the Rainier Handlebar Duffel. This basic compact bag (10.25”W x 5.5”H x 5.5”D) has a two-buckle handlebar attachment so it fits easily on one's back. An Exterior front zip pocket with key clip provides easy access to important items while other items can be stored inside the two slip and one zip interior pockets. An adjustable one-side-removable shoulder strap allows one to wear this bag as a shoulder bag or crossbody once one's ride is over.