Ford GoBikes will be free for riders tomorrow in San Francisco, the East Bay, and San Jose.

Free day passes cover an unlimited number of 30-minute rides for a 24-hour period ending a minute before midnight tomorrow. A ride that goes longer than 30 minutes costs $3 for every additional 15 minutes.

Getting a pass requires an app download and credit card information — more information is available here 

The free rides are part of a promotion with the electronic payments company Clover, in partnership with Ford GoBike.