Science explains why Kalenjins stand out in athletics
Kenyan long-distance runners light up the world stage year after year. From Berlin to Boston and from Olympic tracks to the big marathons, Kenyan long-distance runners have their share of triumph. At the 2025 Wanda Diamond League in Eugene, Oregon, Faith Kipyegon and Beatrice Chebet went on to establish new world records for the 1500m and 5000m. From the streets of Berlin to Boston, names from Iten, Eldoret, Kapsabet, and Nandi show up on the podium like clockwork. Those victories are part of a story that stretches back decades and is firmly rooted in the red soils of the highlands of Kenya. But what makes runners from the highland region stand out above other regions?
There lies a special mix of science, nature, culture, and psychology behind the response. More than 70 percent of Kenyan athletes and runners belong to the Kalenjin tribe, who make up 12 percent of the entire population of Kenya. The athletes train in high-altitude places like Iten, Eldoret, and Kapsabet because their bodies need less oxygen there, making them more efficient runners. They do better in their sport when they train at high elevations.
But it’s not just about where they live. It has about how they live. A 2010 study by the University of Glasgow found that 86 percent of elite Kenyan runners ran to and from school, often covering up to 20km a day from the age of seven. Add the daily chores of farming, fetching water, and herding animals in hilly terrain, and it becomes clear that their strength is not built in gyms but through routine.
According to research published in the Scandinavian Journal of Medicine & Science in Sports, Kenyan athletes’ high oxygen absorption capacity, low body weight, long legs, and slim calves provide them with biomechanical efficiency, which can make a difference in a marathon.
Beyond this physical conditioning lies something even more powerful: culture. In many Kenyan communities, running is not a hobby; it’s a respected pursuit. It offers the promise of a better life. One win can lift a family, even a village, out of poverty. This belief system creates a hunger that propels young people to race up every morning, sometimes with nothing more than worn-out shoes and a dream.
Group training is central to the Kenyan method. Runners train in packs, rising before dawn to hit the roads together. These training groups are not just for physical benefit. They build camaraderie, discipline, and mental toughness. Local coaches, often former athletes themselves, design demanding schedules with one important rule: rest is part of training. Unlike some Western systems that glorify exhaustion, Kenyan runners understand that recovery is a competitive advantage.
So, what can the rest of Kenya, and the world, learn from this? First, talent is everywhere. Counties like Turkana, Mandera, Kisii, and Meru could become hubs for the next generation of athletes if given the right tools: tracks, fields, nutrition programmes, and grassroots coaching.
The writer is an Innovations Evangelist and a PhD Candidate; [email protected]














