Nairobi marathon
road closures.

When it happens

Nairobi's big road races cluster in the second half of the year. The largest, the Standard Chartered Nairobi Marathon, is run in October: in 2026 it is on Sunday 25 October.¹ Several others, including half marathons and charity runs, are scattered through the calendar and close smaller sections of the city on their own mornings.

Dates move year to year, and the organisers confirm both the date and the route each year rather than reusing a fixed one. Do not plan around last year's route. It is the single most common mistake on race morning, and it is why this page describes how the closures behave rather than listing streets that may be wrong by the time you read it.

The useful shape to hold in your head: closures start very early, before dawn (the 2026 full marathon starts at 5:45am¹), and the affected roads reopen in stages through the morning rather than all at once.

Which part of the city is affected

In 2026 every race assembles outside Carnivore on the Southern Bypass and finishes at Uhuru Gardens,¹ with the full marathon running through the heart of the city. So expect trouble on Langata Road and the Southern Bypass as well as in the centre. In practice that means:

• The central business district itself, including the streets around the start and finish, which are usually closed longest.
• The main approaches into town, which either close outright or lose lanes, since the route has to leave and re-enter the centre.
• Parking and access near the start area, which is often restricted well before the first closure on the route itself.

Roads on the far side of the city from the course, such as the Eastern Bypass, are the ones most likely to run normally. Check the official course map to see which those are this year. Planning around a race is covered below.

How closures actually work on the day

• They are staged, not simultaneous. Roads close ahead of the runners and reopen behind them, so a street that is shut at seven may be moving by nine, while another has only just closed.
• The published time is when the closure starts, not when traffic stops. Marshalling, barriers and parking restrictions go in before that, so the practical disruption begins earlier than the notice suggests.
• Reopening is slower than closing. Barriers have to come out, and the traffic that has been held back or diverted all morning arrives at once. Expect unusual congestion for a while after a road officially reopens.
• Diversions get crowded fast. Everyone is sent the same way, so the recommended detour is often busier than the closed road would have been on a normal Sunday.

How to plan your morning around it

• Do not drive into the CBD. If your destination is in town and it can wait, wait. If it cannot, go very early or plan to arrive well after the reopening.
• Go round the course, not through it. Check the official course map first. In 2026 the races start on the Southern Bypass, so it is not the way round this year. A route on the far side of the city, such as the Eastern Bypass, is worth a long detour on the map that is a short one on the clock.
• Going to the airport? Give yourself a much larger margin than usual, and plan a route that never touches the centre. This is the trip that most often goes wrong on race day.
• Check the day before, not the morning of. The route is published in advance. A few minutes on Saturday evening can save hours on Sunday morning.
• If you live inside the affected area, assume you cannot drive out until the route reopens, and move the car the night before if you will need it.

Where to find the official route

For the route map and closure times, go to the source rather than to a repost:

• The race organisers publish the official course map and start times.¹
• Nairobi County² and KURA³ announce the closures on the city roads involved.
• NTSA and the traffic police publish diversions and cover the day itself.
• KeNHA is relevant when the route touches a national trunk road.

Those sources tell you the plan. They are much less good at telling you how the plan is actually going at nine on Sunday morning, which is the other half of the problem.

Other events that close Nairobi roads

Marathons are the most predictable closures of the year, because they are announced and mapped in advance. Several other kinds are not:

• Matches and concerts at the big venues, which close or restrict surrounding roads with far less notice.
• Processions and official movements, which can hold a route at short notice.
• Demonstrations, which are the least predictable of all and frequently affect the CBD and its approaches.

For those, no advance notice is likely to reach you in time. What does reach you in time is other drivers, which is where Rada comes in: save the roads you use, and you are told when somebody reports a closure on one of them.

Quick answers