Thanks for all the tips.
I checked with the *A RTWMC tool and indeed this is a valid itinerary ... but at 29282 miles after taking into account MAD-GRU-SCL and SIN-BKK-MAD (SQ no longer flies SIN-MAD).
To get below the 29000 threshold, is it permitted to do an open jaw between YYZ and EWR? I tried this on the *A RTWMC, and it still came out as 29282!
Originally Posted by Kiwi Flyer
It may be worth spending some time on the
*A RTWMC tool which checks routes, stopovers and mileage as you select where you want to go.