Rule Against Backtracking on Award (no duplicate airport)?
 

As the title states, is there a specific rule against backtracking geographically on a one way award, not using same airports?

I've found the following as pieced together:

JNB-SIN-PEK-ORD-SFO. MPM works out (just barely, within ~50 miles)

There are no such rules as long as you are within MPM (I also doubt any min.wage Aeroplan call center agent knows geography)

There's no geographical backtracking rule. The actual backtracking rule is that you can't pass through the same airport twice on a one-way award, or on the same side of the point of turnaround on a round-trip award.

Got it, thanks.

is there any leniency when it comes to MPM or is it a hard stop? I found a route a few weeks ago (can't recall exactly what it was) but I remember it being 4 miles over MPM JNB-LAX.

Its a hard rule. But you never know what calculator is being used. There was a thread a way back how AC shortens people by a couple/dozen miles on some routes