If you are exhausted of traveling through African continent there is a place where you can take a break and get back your strength, this is Zanzibar.
You can take your bike over there in the ferry from Dar es-Salam and make a loop around the island.
Start for the old city of Stone town and then go to the West cost, popular for its quiet waters perfect for resting and diving, sunsets are also amazing from Nungwi and very recommendable to eat fish at the beach.
Then you can take a loop and visit the East cost where the wind is the protagonist. If you like to practice sports like kite surfing is an amazing place.