There's an understatement, Hagbard. As it is, the itinerary is about 30K miles. At 500mph, thats about 60 hours in the air. Add about 2 hours per stop, and you add another 20 hours. That's over 3 days, which only leaves less than 2 days per stop. And that's not accounting for transfers, customs, etc...
And my last westbound flight destroyed my system much more than the 10 eastbound flights before it combined. I think it just depends on the person and the routing.