Ok, over 2 years old, but I think it is worth a post.

www.repeaterbook.com, you can export their info for a number of devices, but more importantly, you can export as a .gpx file.

To do this, click the big map on the front page, then select your state. From there, select your band (2m, 70cm, etc) and then the list it generates can be exported as a .gpx file. Load it up in google earth and it gives you the location of each repeater.

This should help in the planning process. You can also load repeaterbook on your smart phone. It stores all the info on the device, so you don't need service to access it. It will give you the closest repeaters based on your location (if your device is location aware). Now, closest isn't always best, but it is a start.