Altitude and malaria
Iten sits at about 2,400 metres (7,900 ft), which is why runners come here. That elevation also means malaria is generally not present. The mosquitoes that transmit it do not thrive at this altitude, so the risk while you are in Iten is considered extremely low.
If you will also travel lower — the coast, the Lake Victoria region, or some national parks — ask for medical advice on malaria prevention before the trip.
Food and water
The illness travellers actually meet is usually a stomach bug from food or water. Drink bottled or properly filtered water, wash your hands, and eat food that has been cooked freshly.
Other mosquitoes
Dengue and chikungunya are also uncommon in the highlands around Iten. They are more of a question in warmer, lower parts of Kenya. Repellent, and a net if you sleep outside the highlands, is the sensible habit.
Acclimatising
Some people feel a mild headache, fatigue, or shortness of breath in the first days. Drink enough, eat carbohydrates, and give the first sessions room to be easy.
Vaccinations
Have your routine vaccinations up to date. Depending on the route, a clinician may also suggest hepatitis A, typhoid, or yellow fever. Yellow fever is required only for travellers arriving from certain countries.
With those ordinary precautions, Iten is a straightforward place to train. This is general travel information from the camp, not personal medical advice.