[Sans teleports. Sans would absolutely be a good person to get across a lot of distance really fast.]

[Then again, Sans is delicate enough that a flowerpot can take out half his ribcage, so. Probably not the best idea, especially since he might not remember his fragility, or his ability to teleport.]

[Shelve that. Move on.]

If they knew you were there already, they might be able to lock on to anyone trying to cross the distance. I'd hold off on that until we have a way to travel safely.

...also maybe don't aggro the homicidal shambling hordes.