The Nairobi Marathon is an annual road running competition over the marathon distance usually held in October in Nairobi, Kenya.

[2] It was part of "The Greatest Race on Earth", fully sponsored by Standard Chartered Bank.

The 2020 edition of the race was cancelled due to the coronavirus pandemic.

[3][4] The marathon course starts on Uhuru Highway outside Nyayo National Stadium and heads roughly northward, wandering through the city center, before heading east on Wangari Maathai Road.

[5] The segment on Mombasa Road is a loop that is repeated twice before the course ends with a finish inside the stadium.