Buenos Aires, 23 August 2026

Ethiopian Yomif Kejelcha lowered the half marathon world record to 56:51 minutes on Sunday in Buenos Aires, taking the previous best mark from Ugandan Jacob Kiplimo, who had set it in March.

Kejelcha, 29, finished in the Argentine capital on Sunday in 56:51 minutes, 29 seconds under the previous best time of Uganda's Jacob Kiplimo, who had pushed the mark to 57:20 minutes in March in Lisbon. The old best mark had at that time replaced Kejelcha as world record holder; now he reclaimed it in a fast race on South American soil.

For Kejelcha, it is already the second half marathon world record of his career. Back in 2024, he had set a mark of 57:30 minutes, which was later beaten by Kiplimo. The fact that both runners have now shifted the best time several times within just a few months underscores the high pace at which the international elite of road runners is currently moving.