We discuss this every couple of months. Although they <i><b>say</b></i> that 4 laps on Deck 4 is 1 mile, I think that 4 laps is longer than a mile. Think about it. The ship is 964 feet long and 105 feet wide (approximately, I don't have the exact dimensions in front of me). I'm guessing that the walking path is 850 feet long and let's say that it's 90 feet wide (assuming that you're walking 5-10 feet away from the railing. 2 x 850 feet + 2 x 90 feet = 1880 feet. Subtract a number of feet from that to account for the rounded nature of the track at both ends, and we could say that the track is about 1700 feet. Multiply that by 4 laps, and you get 6800 feet. That's a little over 1 1/4 miles.