Lap Timing Mode requires a start/finish line to calculate lap times. By default, the start/finish line it used is detected from the Currently Selected Track based on its GPS location. If there are no local tracks available, you can create a start/ finish line using the display when you are on the track.
Manually Set a Start/Finish Line
Manually Set a Separate Finish Line
Clear the Separate Finish Line
Load Start/Finish or Finish Line Gates