Originally Posted by
Say Vandelay
I use
MileCalc to estimate my lifetime miles on my tracking spreadsheet and used it pretty regularly for PQMs before that at least for flights I didn't know by heart (EWR-ORD = 719

). You can set the 500mi minimum and it uses the Great Circle distance mentioned above.
At one point EWR-ORD was 721 ... I have n

idea when it changed, but I have FF statements from the '90s that show that.