Hiring a running coach in Africa-suggestions?

Hello all!

I am currently living in Botswana and am 'training' for a half marathon in June. I'd really like a running/general fitness coach who can help me when it comes to running on sand, not having hills, dealing with heat, keep me in check. Does anyone know of a good coach who can do this all through email, or a site that someone has had success with? I'd love to do this in person but obviously, that cannot happen. I'm totally up for someone who is just starting to do coaching and wants a little challenge of not directly working with the client. Advice appreciated!