Nairobi road closures and traffic diversions on 25 October 2026 will affect 11 routes for the Standard Chartered Nairobi Marathon, from midnight to 2pm. 3 major Nairobi roads will shut down for 14 hours on Sunday, September 27, 2026, to make way for a large cycling event The Southern Bypass, part of Ngong Road, and the Uhuru Gardens/Carnivore.