I usually can't afford to go to more than one show per tour and I usually live somewhere where there's a tour stop but my two farthest -
1. I made it to two fragility shows. I lived in Fullerton, CA and saw them in San Diego. The other show was Anaheim which is the next town over in case you were wondering.
2. Living in the Philadelphia area, I went to one of the NYC wave goodbye shows. Living in the same place I went to see HTDA in Harlem which is the same distance but that's not NIN and I saw Tension in Newark which wasn't as far.