The scene in which Steve Martin runs across the 59th Street Bridge to Queens was in fact all filmed on location in 1983 and Martin (who was a runner in real-life) actually made the run. He began his run on the Manhattan side of the bridge and then ran (mid lane) to Queensboro Plaza, then branching towards Astoria. Martin ran under the elevated N/W-Train Subway line, up 31st Street, meeting with a police officer on the corner of 31st and Newtown Avenue and all the way to 28th Avenue and 31st. Although edited out of actual sequence Martin eventually enters the old church (which still stands) at 51 31st Street, Astoria - only to realize he has interrupted the wrong wedding.