Max. 5 stopovers, in general- one free at the point of turnaround, plus 4 more at 10,000 points a pop. If you have a surface sector, the mileage counts toward the limit, but it only counts as one stopover (eg. I flew JFK-LHR-VIE, PRG-LHR-JFK- only one stopover, but the mileage VIE-PRG counted even though I took the train)

As I posted on your other thread (in response to another poster), you have to calculate distance back to origin.
So even if you only fly SEA-LHR,LHR-JFK, the mileage is calculated as follows:
JFK-LHR 3451
LHR-SEA 4800
SEA-JFK 2421
This goes over by 672 miles.

SEA-LHR, LHR-SEA is fine though. If you want to fly Concorde, my math says you can only get back as far as Denver.

[This message has been edited by landspeed (edited 11-09-2002).]