I've used the treadmill app previously and it displays a distance but suddenly today it did not. Only had the 245 for 1 week and have changed some of the device screens for run, treadmill run, and cardio. I don't know if the treadmill running app has enabled GPS or not since there is no way to check/change that setting. I prefer not to reset the watch as that would clear my days worth of data but hoping for a manner to fix the treadmill distance recording.