Motorists in Nairobi should brace for major traffic disruptions this weekend as several key roads are set to be closed to pave the way for the Nairobi City Marathon.
According to an official notice, the closures will begin at midnight on Saturday, June 6, 2026, and last until the afternoon of Sunday, June 7, affecting major routes across the city.
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One of the major affected roads is the Nairobi Expressway, where traffic will be suspended in both directions between James Gichuru Road and Jomo Kenyatta International Airport (JKIA). The closure will start at 10 pm on Saturday and run until 3 pm on Sunday.
Waiyaki Way will also be partially affected, with inner lanes on both sides closed between Nairobi School and the entrance to the Expressway.
Uhuru Highway will be closed in both directions between Lusaka Roundabout and Museum Hill from midnight on Sunday until 4 pm, while Kenyatta Avenue will be inaccessible between Panafric Hotel and Moi Avenue during the same period.
Other affected routes include Haile Selassie Avenue (between Cathedral Road and Uhuru Highway), Processional Way, City Hall Way, Simba Street, and several adjoining CBD roads.
The closures are meant to ensure safety and smooth conduct of the marathon, which attracts thousands of runners and has grown into one of the region’s biggest road racing events.
Motorists have been urged to plan ahead and use alternative routes, as the disruptions are expected to affect movement in and out of the city centre as well as access to key destinations, including the airport.
This year’s event has attracted strong participation, with the 10km race drawing the highest number of entrants at 6,550 out of 17,450 registered runners.

The full marathon (42km) has 1,750 participants, while the half marathon (21km) has 5,050 runners. The 5km family fun run has also attracted 4,100 participants.
Athletics Kenya competitions director Kennedy Tanui noted that the 10km race remains the most popular category, adding that registration closed automatically once the target capacity was reached after just three weeks.
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