Joined: Jul 2007
Posts: 8,625
Likes: 3,541
From: South shore, L.I., NY
Bikes: Trek Emonda SL7, Cannondale Topstone, Miyata City Liner, Specialized Chisel, Specialized Epic Evo
In my experience, GPS devices are inaccurate as to speed at that moment. There’s always a few seconds of lag in the display. Is why I use speed sensors.