I just came across this repeater mapping site today and thought road-tripping hams might like it:

http://k5ehx.net/

To find repeaters along a route, click on MENU in the top right and then click on the road icon (second from the left).  Then input start and end points and click Draw Route and then Search.

Happy mapping!

LCM

Levi C. Maaia, K6LCM

www.levi.maaia.com +1.805.604.5384