Mezgebu Sime

Mezgebu Sime (born 7 October 2005) is an Ethiopian long-distance runner.

Biography Mezgebu has won the Ethiopian under-20 title over 5000 metres. He finished sixth at the Great Ethiopian Run in a time of 29:00 in November 2023.

In March 2024, he won silver medals in both the U20 individual race, and in the team U20 race, at the 2024 World Athletics Cross Country Championships in Serbia.

He finished in third place over 5000 metres at the 2025 Shanghai Diamond League event, in a personal best time of 12:51.86, finishing narrowly behind the event winner Berihu Aregawi and second placed compatriot Kuma Girma. He also ran in the Diamond League in June 2025 at the 2025 Meeting de Paris. In July 2025, he was provisionally named as a reserve for the Ethiopian team for the 5000 metres at the 2025 World Athletics Championships in Tokyo, Japan.

Sime was selected for the senior Ethiopian team for the 2026 World Athletics Cross Country Championships in Tallahassee, United States. In April, Sime finished runner-up in 13:21 behind Addisu Yihune at the Boston 5K. Competing in the Diamond League at the 2026 Athletissima in Lausanne, Switzerland, on 21 August 2026, he placed sixth over 5000 metres.