Wii Fit U running and mountain climbing discussion

I'm addicted to jogging and hiking now that I have Wii Fit U!
Does anyone else use the feature?

If my physical condition were better I'd definitely enjoy a feature like that, unfortunately as I am right now about 1 mile a day is my limit so I wouldn't make much progress on the "Marathon Mode" in Wii Fit U.

I've been debating If I should rebuy a fit meter since my old one went through the wash and died, I don't know if I could just pick up a new battery, because the one I bought didn't work