[Solved] How to measure distance in the worldeditor

I know this sounds like a stupid question, but how can I measure the distance in the worldeditor? I am currently making a dragway map and I want it to be as close to a quarter mile as possible. I can't seem to find much information on scale in the worldeditor. Thanks

 

I managed to scale the default cube in blender by 201 on the y axis, giving me an object that is 402 metres long, the length of a quarter mile.

 

other option, default height map resolution is 1 pixel = 1 meter