[Ways Of Planning Extremely Long Route?]

I am going to go to America, Canada, Mexico, Europe and Australia. Maybe I visit North Africa and Japan, not sure about those. I just afraid that it might be easier that I just use several different sites/programs for planning (of course it would be lovely if there would be one program/site that would cover my needs, but I afraid that there isn't). Unfortunately I have noticed that road tripping isn't so popular outside America so there isn't really a cool communities or cool softwares outside America (at least not so good ones).

[Ways Of Planning Extremely Long Route?]

I am trying to plan extremely long road trip and just wondering what would be best program/website to do it. I have tested several ways to planning road:

 

Google maps:

+It is world wide and I can easily plan route via roads.

-there are too few checkpoints that I can add to one road. I can only plan about 1000 - 3000 mile long routes.

 

Community walk:

+I can plan very long route with this site.

-Roads are only images on this site, so route doesn't follow them. If you are going to fly your route, this is probably best site for it.

 

Microsoft route:

-I can't plan routes outside America

 

Delorme Street Atlas:

I haven't try this one. Can I plan long routes outside America with this?

 

Do you know any else program/site that I could use to plan route?