Originally Posted by madman
Am trying to plan a RTW going to SCL and the new 345 flights on SQ. The itinerary could be: MAD-SCL-YYZ-EWR-SIN-MAD
Total: 28939 mi (according to Great Circle Mapper)
EWR-SIN is indeed trans-Pacific, but there are no *A flights from MAD-SCL or SIN-MAD. The shortest connection points appear to be in Rio and Frankfurt respectively, which brings your mileage total over 29k.