It depends what scale or gauge you want to go with,
using track gauge only
1 brick width = 8mm,
Lego track is 6 bricks wide = 48mm
Standard track gauge is 4' 8.5" = 1241mm
This gives a scale of 1:26
So.@ 1:26..1202 feet would = 1991 studs,
Track is 16 studs long. so you would need 124 track sections.