extending

WE I've extended the distance slightly to around 3 miles, with a different route to the gym. I'm still having problems with a particular hill having to slow to a walk for around 50 feet, normally timed with crossing of the road, but the new route adds on an interesting track (most of my routes are street based)

I then did another mile on the treadmill and 1000m rowing. Feeling a bit achy possibly because I wasn't really with it today and initally it felt like a bit of a chore... hopefully just one of those off days we all have.

Question : which is more accurate my GPS watch, or a treadmill?

Wayne