If you’re running the NYC marathon tomorrow, have an iPhone, and are a Foursquare user, 4SQ CEO Dennis Crowley has the low-down on how to track your progress throughout the race by auto-checking-in to 4SQ at all the mile markers.
I’m going to use Mayor Maker tomorrow during the NYC Marathon to auto check me in to every mile marker as I run past them. I’ll be running w/ my iPhone in my pocket (with GPS turned on). Every time I run over a mile checkpoint, Mayor Maker will send that checkin to foursquare and foursquare will send it back out to Facebook and Twitter. Cool, right?