The MTA website says it’s a 38-mile trip from 241st Street in the Bronx to Far Rockaway, but we think we can do better. We found a route between those same two stations that covers over 148 miles of track. It uses every subway line at least once and requires 45 transfers.
There are a couple of subway lines in New York City that I never had the chance to ride during my time working there. I plan to fix that though. Now, go see if you can find a longer route!