Ruti Aga, former Tokyo Marathon champion, received a six-year ban from the Athletics Integrity Unit (AIU). The ban stems from anti-doping rule violations and tampering. Aga tested positive for methylprednisolone after winning the Meishan Renshou Half Marathon in March 2026.

Aga initially faced a two-year suspension for the positive test. However, the AIU added four more years due to tampering charges. She provided false information and a forged document to AIU representatives. Aga claimed the positive test was due to a knee injury, but the prescription was from a non-existent clinic. Read more culture coverage.

Aga's suspension is one of the largest this year. She has a personal best marathon time of 2:18:09 and has multiple podium finishes at World Marathon Major events. Her ban includes disqualification from results since September 10, 2026. Related: Legese and Cheptai Aim for Glory at 2026 Delhi Half Marathon.

This original Runner World brief is based on reporting from Canadian Running. Visit the source for its complete reporting, context and any later corrections.