For those curious, here are the stay times:

    1 week in Guyana 
    3 weeks in the U.S.
    ~11 weeks in Germany
    1 week in Morocco
    3 weeks in the U.K.
    3 weeks in Turkey
    11 days in Iran
    3 days in Kuala Lumpur
    5 days in Australia
    2 days in Kuala Lumpur
    9 days in Thailand
    

I like how most of this winning itinerary shows a clear disregard for the presumptive intent of the challenge, instead fulfilling its goal to the letter. That is, this itinerary is really in some sense two "trips" separated by three weeks in the same home country (the U.S.) containing not just 3 months in Germany (which is presumably longer than expected, though of course you can make very good use of that time) but also no time spent in Sub-Saharan Africa.

Cheers to the person who discovered it.