Edirne is ~230 kilometers away from Istanbul (west side). If you
go by bus, it takes 2,5 hours, but by car, it takes 2 hours.
If you go to east side (anatolian side) it may take ~ 3 hours
drive.
why do you wonder Edirne? I live in Edirne and if you want i can
help you. contact me in any way.