I will be travelling the East route from the bottom up in July
my route will be fly the bikes from ireland to Namibia then down to Cape Town, Botswana, Zimbabwe , Zambia, Mozambique, Malawi, Tanzania, Kenya, Ethipoia, Sudan , Egypt, then on to Israel and finish up there.
I think there is no way to go down except through Egypt and even though its a bit of hassle its not impossible. To go around it would be hard and dangerous. When you get into Egypt the way to get to Sudan is to take a ferry from Aswan to Wadi Haifa
let me know when you are going and if i can be of any other help
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