The New York City half marathon returned Sunday, featuring a new route from Brooklyn to Manhattan. An estimated 27,000-plus runners participated in the United Airlines NYC Half, as the course traveled across the Brooklyn Bridge for the very first time.

On Sunday, the runners will go over the Brooklyn Bridge for the first time because of construction in Lower Manhattan.

The events will be accompanied by a number of street closures. Read on for the streets to avoid on Sunday and Monday.

Ahead, here's everything you need to know about the NYC Half Marathon, from the route and start times to the best ways to watch (or avoid) the race.

The event, spanning 13.1 miles, saw runners starting near the Brooklyn Museum in Prospect Heights, crossing up through Eastern Parkway and Downtown Brooklyn and over the Brooklyn Bridge and into Times Square before ending in Central Park.

For the first time ever, the New York City Half Marathon will zip over the Brooklyn Bridge this Sunday. Over 27,000 athletes will run the streets of New York City on Saturday, completing the 13.1-mile course that starts in Brooklyn and ends in Manhattan.