No earned badge

Did you wear a Garmin device while doing your treadmill runs? Manually entered and imported activities do not count. The activity must be recorded by a Garmin device. It can be edited, though, for example if you need to enter the distance from the treadmill.

Thank you, I did not wear because I knew it would be inaccurate. So I entered manually... bummer!!! 

ShannonGodfrey said:

Thank you, I did not wear because I knew it would be inaccurate.

It may be innacurate, but 1) you can calibrate the Treadmill Activity when you finish, entering the right mileage directly on the watch, 2) It still records valuable data such as the Time, HR, Calories, Intensity Minutes, Pace, Cadence, Steps,..., 3) Even if the distance is still wrong or you forget to enter it on the watch, you can edit it in Garmin Connect, and finally 4) You get the badge 

PS: do not hold on the railing, while you run on the treadmill! It prevents the watch from moving and hence also from detecting your pace/stride!