"I felt there was quite a lot of pressure on us because we have been successful on the last few challenges we have done," Heptonstall told the London Evening Standard. "There were a few commuters looking at us with our cameras on our heads. When I got back on the train there were a few people smiling because they knew what we were doing. There was some reaction."
The stateside stunt was filmed in January: Heptonstall ran the 1345-foot distance between Manhattan's Bowling Green and Wall Street stations with seconds to spare.
The same trip takes the train about 85 seconds.
Heptonstall, an environmental consultant, and Carroll, a fitness coach, were asked to attempt the feat after Adidas executives noted the success of their "Race the Tube" video, below.
