Screwed up the poll and voted one-way distance, didn't realize we were going round trip. Anyways here are mine...
934 (1868 roundtrip) miles to pick up a fully restored Whirlwind from a fellow Pinsider in Rapid City South Dakota. Beautiful drive and got to meet a cool guy.
Second farthest was for an excellent condition Wh20 in Georgia (722 mi. /1444 mi. roundtrip). This particular trip involved quite a bit of alcohol, a gun, strippers and a guitar. Crazy night that I'll never forget!!
Something makes me feel good about driving far out to bring these machines back home to their place of origin (Chicago)!