My Lezyne GPS watch picks up satellites inside the house and has motion sensing capabilities, so when I skate freestyle slalom in the house on rainy days it does a fairly good job of recording the sessions inside. Even distance. And the mapping stays within on house of mine on either side. Amazing really.
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2 Inline Skates, 1 Quad Skates, 4 Longboards, 3 Bicycles, 0 Cars
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