I ran the Berlin marathon on Sunday and my GearFit 2Pro logged a total of 47.99km - way over the actual 42.195km. Remarkably, the route it tracked on the map was very accurate. Waiting to hear what Samsung have to say but if it can't even calculate the length of the route it measures, then it's going to be returned. The live pace display is also wildly inaccurate (reads much slower than actual pace).
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