The Rome2Rio.com web site is quite interesting. It gives you a route map and cost estimate for your proposed travels. It also has a transportation map that shows you road and rail networks in some countries.
The map below shows alternate ways to travel from New York to Bangkok. It is roughly the same cost to travel either east or west or via the polar route, so you can route around the world.
The route below shows connections from Tampa, Seattle, Japan, Seoul, Korea, Hong Kong, Dubai, Zurich, Washington DC, and back to Tampa.
The Rome 2 Rio Program also gives you and estimated cost for your trip.