100 m individual medley, women, 25 m pool

What to remember

Butterfly, backstroke, breaststroke, freestyle: one 25 m length per stroke, which is why the 100 m individual medley exists only in short course. On December 13, 2024, at the World Championships in Budapest, Gretchen Walsh swam it in 55.11 s.

Born in Nashville, the American is a freestyle and butterfly specialist, and this record sits alongside several others: she has also set world records in the long course 100 m butterfly, the 50 m freestyle in both pools, and the short course 50 m and 100 m butterfly.

At the 2024 Paris Olympics she took silver in the 100 m butterfly, after setting the Olympic record in the semifinals with 55.38 s. The 100 m individual medley has been on the short course World Championships program since 1999.