The German women's relay team of Dallman, Samulski, Steffen and Liebs, then swam a time of 7:50.82 to take the previous US 4×200 m freestyle relay (Coughlin, Piper, Vollmer and Sandeno) world record that stood at 7:53.42.

During the 2008 Summer Olympic Games in Beijing, China, Steffen won the 100-meter freestyle, catching world record-holder Libby Trickett of Australia at the last stroke.

Steffen touched in 53.12 seconds, bettering her own Olympic record of 53.38 set on the leadoff leg of the 4×100 m freestyle relay.

[3] Her 100-metre freestyle long course world record was broken by Cate Campbell on 2 July 2016.

Her 50-metre freestyle long course world record was broken by Sarah Sjöström on 29 July 2017.