The new-ish JFK-PHX route is worth knowing about. I think it's the longest pure USA non-transcon, non-Hawaii, non-ANC route at 2153 miles. And being domestic it has First, so 1.5*miles.

I'm using it this weekend for a Mileage Run:

JFK-PHX-ORD-SFO-JFK-PHX-JFK
starting at 08:00 Saturday, finishing by connecting into the CX to HKG on Sunday evening. That's 12331 miles (18496 status miles in First). Not sure you can do better in a weekend, particularly using a transcon to avoid a hotel.

Of course JFK-PHX-JFK-PHX-JFK-PHX-JFK would be marginally more miles (12919), but would need three days and hotels to do it.

[This message has been edited by christep (edited Feb 05, 2004).]