Two runners with injuries ended the New York City Marathon on their own two feet — and a pair of crutches.

© Adrienne Grunwald for The New York Times

Here’s our guide to picking a good cheering location, whether you are following one runner’s progress or looking for a good spot to park yourself for the day.

© Hiroko Masuike/The New York Times

Spectators can use an app to track runners in real time on race day.

© Hilary Swift for The New York Times

Everything you need to know about Sunday’s five-borough race.

© Todd Heisler/The New York Times