How far is one lap around a running track in the third lane?

Answer:
The line you run around in the third lane, where the inside lane is 400 metres long and the lanes are 1.27 m. wide including the lane marking, is approximately 415 metres long, 415.959 to be mathematically more precise.
First answer by AlvinKlippenstein. Last edit by AlvinKlippenstein. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 147 [recommend question].