A few tools useful for this scenario when considering movement/non-movement of your party (resource competition/conflict zones/impassable terrain/bottlenecks/roadblocks/etc.) as well as the movement/non-movement of others (refugees/zombies/storm troopers/etc.) which may affect your party.
Interactive population density map:
http://demographics.coopercenter.org/DotMap/index.html
Turning on the map labels makes it much more useful.
The "racial dot" color feature might matter for some (particularly in some urban settings).
Interactive topographic map:
http://bmproto.esri.com/WorldTopoMap...raphicMap.html
Couldn't get the "topo characteristics" button to work on my iPad.
Found it easiest just to type city name and state (e.g. Page Arizona) in the box at the bottom right.
Google earth is helpful, too:
http://www.google.com/earth/explore/products/