Yes. The following smartwatches synchronize directly with the Runtastic platform:
As soon as you’ve synchronized your activity with Runtastic, it will be counted towards the Challenge.
For other smartwatches, you have the option to import your activity to Runtastic as a .gpx or .tcx file. For help with importing your activity, please see here.
If you track an activity with more than one device, it will only count once towards your challenge.