Caltrain is a California
commuter rail line on the
San Francisco Peninsula and in the
Santa Clara Valley (
Silicon Valley). The north end of the line is San Francisco, at 4th and King streets; its south end is
Gilroy. Trains leave San Francisco and San Jose about hourly on weekdays, or more frequently during commute hours and for special events (such as sporting events). Service between San Jose and Gilroy is limited to three weekday commute-hour round trips. Weekday ridership in February 2015 averaged 58,245, up 10.7 rom February 2014 and 71% since 2010.