The first mile is an uphill climb up the bridge, while the second mile is downhill, heading off the bridge to Brooklyn. At the foot of the bridge, you might consider dropping any throwaway clothing you kept on for the start, as it will be much less cold and windy once you’re off the bridge.

The TCS New York City Marathon is about to kick off and the Big Apple is already buzzing. Here's everything you need to know about the main event.