NEW YORK (1010 WINS) — Nearly 1,000 people withstood the pain of running 66 flights to the “Top of the Rock” on Sunday for the “Climb to the Top” drive at Rockefeller Center.

Runners were raising awareness for Multiple Sclerosis and raised around $750,000 for research.

LISTEN: 1010 WINS’ Glenn Schuck asks why one runner is participating

Marine petty officer Chris Delaney of Long Island was running for both service members overseas and his friend Trisha McKennan. During his run, he was also wearing a full uniform with a 60-pound vest.

“The way I look at it my brothers and sisters can be overseas living in a desert, doing what they gotta do over there. If I gotta endure 20 minutes over here to bring attention to what they do and also to raise awareness for MS for my friend Trisha, that’s what it’s all about,” Delaney said.

Firefighters also joined in the race with many wearing 100 pounds of gear stuck to their backs.