Originally Posted by Carioca Canuck

Friday I am flying as follows on United...........YYC-DEN-IAD-GIG.

YYC-DEN is 898 miles on the GC mapper and 899 on yours.
DEN-IAD is 1452 miles on the GC mapper and 1450 on yours.
IAD-GIG is 4791 miles on the GC mapper and 4811 on yours.

A difference of 22 miles on a trip of 7141 miles.....a difference of 00.33 %. The UAL website shows the same numbers as the GC mapper.......so I don't think it's arbitrary at all.

I don't see the point.....or what is different. Sorry.