Noah has been climbing stairs a couple of times a week at Hayward Field. I typically walk around the track while he gets his workout. Last night I took to the stairs to stay out of the rain, and I think I got as wet (sweating) as I would have gotten had I walked around the track. It takes 50 steps to climb to the 25th row and there are seven aisles along the east grandstand. I did 4 of these circuits. That's about 1400 steps up, and another 1400 steps down, and a bunch of steps in between. This should be a good alternative to fixing flat tires during crummy wet weather bike rides.