What makes this different from a normal marathon?

This event is specifically designed with pacers to help runners hit a target qualifying time for an international marathon, rather than being a general community race.

What distances are available?

Three categories: 10km, half marathon (21km), and full marathon (42km).

Yes, every participant receives a Kenyan-themed t-shirt to represent Team Kenya. It uses the same well-liked design from a previous ONE4ONE run.

Marathon

ONE4ONE Qualifier Marathon

Saturday, 5 December 2026

5:00 AM

Distances: 10k, 21k, 42k

About: Looking for a qualifying time for your international marathon? A pacer-supported marathon staged at the Vienna Karen Loop, designed to help runners achieve their desired …more

About: Looking for a qualifying time for your international marathon? A pacer-supported marathon staged at the Vienna Karen Loop, designed to help runners achieve their desired qualifying time. Every participant receives a Kenyan-themed t-shirt to represent Team Kenya proudly.

Vienna Karen Loop, Karen, Nairobi

5:00 AM

10km, 21km, 42km · Calculate pace

KES 2,500

ONE4ONE

+254 722 943 271 (Gen. Nyaruai)→nyaruaimuhoro@gmail.com

www.instagram.com/one4oneke

forms.gle/nLD1dpCMS9CU9ofN9

For enquiries, contact Gen. Nyaruai on +254 722 943 271.

Coming up

9 weeks to go

Saturday morning

Race-specific training phase.

Add to calendar

Google|

Train at or near goal pace. Practice your race nutrition and, if you can, get a long session in on similar terrain.

Event Highlights

A pacer-supported marathon designed to help runners hit qualifying times for international marathons

Three distances: 10km, half marathon, and full marathon

Held on the Vienna Karen Loop, a popular route among Nairobi's serious marathon training community

Every participant receives a Kenyan-themed t-shirt to represent Team Kenya

Not the first edition - previous runs by ONE4ONE have used the same well-received t-shirt design

Race Fees

Category	Fee	Status
Standard Entry Choice of 10km, half marathon, or full marathon. Includes t-shirt, finisher medal, route support, and bib number.	KES 2,500	Available

What's Included

Pacer support to help achieve your target finishing time

Kenyan-themed event t-shirt

Finisher medal

Route support

Bib number

Race Distances

10km

21km

42km

Pace Calculator

Go back up Go back up

Course Details

The marathon is staged on the Vienna Karen Loop in Karen, a route well known among local marathon training groups. Pacers are provided to help runners hit specific target times, making this a good option for anyone chasing a qualifying time for an international marathon (e.g. Boston Marathon qualifying standards).

Getting There

The Vienna Karen Loop starting point is in Karen, Karen Plains Road, Nairobi (Just next to Karen Oasis Restaurant), approximately 15.3km from Nairobi CBD, around 30 minutes via Ngong Road (avoiding road closures on Kenyatta Avenue). From the CBD, take Cabral Street to Moi Avenue, then Ngong Road to Karen Road, continuing onto Karen Plains Road to reach the starting point.

Open in Maps