The Kenya National Highways Authority (KeNHA) has announced a temporary closure of the Southern Bypass, with motorists urged to plan accordingly.
In a notice on Monday, October 19, KeNHA said the closure will affect the bypass from Ole Sereni Interchange to Kikuyu Town.
According to the authority, the road will be closed from Saturday, October 25 to pave the way for the 2026 Standard Chartered Nairobi Marathon. The road will open on Sunday at 2 pm.
"The Kenya National Highways Authority (KeNHA) wishes to notify the Public that there will be a temporary closure of Nairobi Southern Bypass from Ole Sereni Interchange to Kikuyu Town on Saturday, October 24, 2026 at Midnight to Sunday October 25, 2026 at 2.00pm," KeNHA stated.
Undated image of a section the Southern Bypass
Photo
"This is to allow for th 2026 Standard Chatered Nairobi Marathon," it added.
Following the closure, the authority advised motorists using the affected areas to use alternative routes.
Those travelling from Kikuyu to Mombasa Road were urged to use the Waiyaki Way during this period, while those from Kikuyu to Karen were directed to use Dagoretti Road as an alternative.
Motorists seeking to travel from Karen to Mombasa Road were asked to use Langata Road. Those going to Mombasa Road from Dagoretti were directed to use Waiyaki Way or Ngong Road through Mbagathi Way.
At the same time, travellers from Industrial Area to Kikuyu can use Mombasa Road, Uhuru Highway before connecting to Waiyaki Way.
Meanwhile, those from Likoni Road going towards Mombasa Road can use Enterprise Road, while those from Mombasa Road towards Ole Sereni can access Emaar Ole Sereni through Nextgen Mall.
"Motorists are advised to use Mombasa Road (A8) from Ole Sereni Interchange through Uhuru Highway, and vice versa, as the alternative route," KeNHA added.
Drivers and other road users were further advised to follow traffic rules during the period and also follow instructions from traffic marshals who will be deployed.
"All road users are further advised to follow the traffic signs and guidance as directed by traffic marshals and Police," the notice added.
Images from the Standard Chartered marathon in Kuala Lumpur, Malaysia in 2023. PHOTO/ Courtesy.