By Korena Di Roma, reporting from South AfricaI've been traveling with Team World Vision following their success at the Comrades Marathon in South Africa. After the race, we spent time at one of World Vision’s development areas in the Drakensburg mountains. Afterward, a group of us flew to Kenya to meet some of the children who benefited from the runners’ sponsorship efforts. Now we’re back in Nairobi after nearly a week spent high above the Rift Valley in western Kenya. Just days after finishing Comrades, three team members, including Hannah Landecker and Andy Baldwin, ran a breezy 5K with a group of marathoners who train in Eldoret. At around 6,500 feet and just north of the Equator, Eldoret is an ideal training ground for professional runners looking to train at altitude year-round, according to Josh Cox, who trained there for seven weeks in 2001. A squat outpost with plenty of flat terrain, Eldoret is home to many of the world’s most decorated runners. Members of its native Kalenjin tribe have earned 31 Olympic and World Championship medals, 12 of them gold.