Originally Posted by
danapop
It is based on distance of starting point and final point regardless of number of connections. IE if A to D direct is 4700 but A-B-C-D is 5900, your number of credits is based in A-D only
True, but in OP's case the only segment that can be upgraded is the YYZ-ZRH, since it's the only AC-metal segment. So, 14 eUpgrade credits.