In 2001, when oneWorld had its Six Continents promo, I did all six on weekends in July. (The July 4 holiday created a four-day weekend for Asia and Australia, and I had a head start on Africa through a business trip to Europe.) Total mileage was over 50,000, though I don't recall exactly.

The "month" of May 14-June 14 this year, i.e., right now, will be about 40,000. Just got back from San Diego and am packing for Australia.