TomTom MultiSport watch not keeping accurate mileage for bikes and runs
I have what I believe is the first generation TomTom MultiSport GPS Watch. The past few weeks, I've noticed that the mileage for my bikes and runs is off, sometimes by comical amounts. For example, I did a 5 mile run a few weeks ago, and the watch reported that I ran 303 miles. I've had similar weirdness with bike rides.
I did a factory reset of the watch (via the software on my desktop) last week, but that has not helped. Does anybody know what's happening and (more importantly) how to fix this?
Thanks in advance.