My very first RTW was ex-YYZ starting in Dec. 2000. The 4 European sectors were all on IB and yielded a whopping total of 1860 miles. Then there were 2 SWP sectors that yielded 2987 miles. After that, I had 1 Asian sector that yielded 1048 miles. Even the 5 sectors in NA yielded a measly 4773 miles. That was a DONE4.
But with thanks to all of the OW gang here on FT, my follow-on DONE3 yielded more total miles than the the entire mileage of the original DONE4.