Options from Harare today:
Many flights into Joburg throughout the day
1 to Nairobi at 11:45am
From Joburg:
Sao Paulo, Brazil at 11am (unlikely, but hey?)
Hong Kong, China at 12:30pm and 5:20pm
Doha, Qatar at 1:15pm
Dubai, UAE at 1:40pm
Singapore at 1:45pm
Mahe Island, Maldives at 1:45pm
Istanbul, Turkey at 6:20pm (unlikely)
From Nairobi:
Dubai, UAE at 4:35pm and 6:55pm
Doha, Qatar at 5:35pm and 8:10pm
Istanbul, Turkey at 8:50pm (unlikely)
Mumbai, India at 8:55pm
Doha and Mumbai both have connections to Kathmandu in the morning (19th) that could get teams there around 11am, Dubai has connections that could get them into India to possibly connect there as well.
Another option that stuck out to me was the Maldives- could be a good place for a tropical leg near the end, since the South Pacific seems less and less likely
Both Singapore and Hong Kong could host legs, but also could be perfect transfer points for other SE Asian countries