Ultramarathoner Dean Karnazes will attempt to break the world record by running more than 153.76 miles in 24 hours on a treadmill in Times Square. He'll start running at midnight Thursday and be suspended between two billboards. One billboard will run live video for viewers, along with a clock and mileage counter.Sheesh! But who's going to follow his EKG?
Karnazes plans to raise $1 million for the Athletes for a Cure Foundation, with the money going to prostate cancer research.