Or just from one end of SF to the other. The commute from Ocean Beach (north of the park, without rail) is over 40 minutes on the rapid and usually over 30 minutes on the express. The 31-Balboa takes almost 1 and 1/2 hours to go the same 5 miles, longer than taking a shuttle bus or car for the 50 miles straight to San Jose, even during rush hour.
Pro tip: Don't move to SF for the commute unless you'll live within walking distance of your workplace. I suppose you could bike, but the streets seem pretty lethal, especially considering how heavy the traffic has grown.