
In 2025, Sabastian Sawe asked the AIU to test him as frequently as possible. He underwent 25 tests in the build-up to the Berlin Marathon, blood and urine, around 2–3 times per week, including days where he was tested twice. He maintained that same approach into 2026. Now, he has broken the Marathon World Record, clocking 1:59:30 in London. Officially the first man to go sub-2 in the marathon.













