Check out the International Mountain Explorers Connection (IMEC) website. http://www.mountainexplorers.org/club/partners.htm Make sure that you use a responsible trekking company that treats their workers fairly. My friend and I decided what our price cap was going to be for the entire trip and then we looked at which companies listed on the IMEC website were feasible given our budget. We went with Ahsante Tours and LOVED IT! I WOULD DO IT AGAIN!