Does anyone know of a website where you can enter the places you want to visit and it shows you the best route to do ?

I think u can do it with STA travel, i found this a fab company to book a RTW ticket. If not just type in round the world ticket into a search engine such as google and click on links that come up. hope this helps.
emma.

roundtheworldflights.com is pretty good, not amazing, but its decent, put in a rough list of the countries you want to visit, then it will give you a list of about 50 possible routes, come close to what you want, others nowhere near, but it makes you aware of some possible routes, and how common they are. How about posting on here the countries you fancy, and see what people say.

Hey Sean
We are currently on our ticket via the One World Alliance. Check their websitenull for the around the world tickets they offer based on miles you travel or based on the number of continents you travel to. If you want an idea of some other places to go and some tips on where and how long in some of the countries you mentioned to spend before you buy a ticket and set your dates, check out this website for more information.
Good luck organising!

...LOL
Just joined this site today and this is the second time for this. Try airtreks.com
It works for me.

If you have nowhere specific to be, you cannot be lost