Give your position from the map at the start of your turn, I figured the blue line was the path of your movement. 

[img]https://i.imgur.com/CwuCoUK.png[/img]

You'd only be moving five squares, to 25 out of your 40.

It would take you 40ft if you don't take diagonals, going all the way right and then straight up. Which I mean you can still do, if that's what you wanna do.