ATMEL Mega1284P evaluation board avalible

Yeah, use a solid ground plane (or an almost solid ground plane if you absolutely have to stick silly hatching on it) and that routing's still ugly :smiley:

What fab house are you thinking of using, go look if they provide design rules files - some do so you can easily check it yourself.
...and if the tracks are ground, you don't have to route them, rip them up and they will then just connect to the ground plane.