Micha Østergaard competed for Denmark in 100 &amp; 200 m butterfly and as a member of the nation's 4 × 200 m freestyle relay team at the 2008 Summer Olympics in Beijing. Leading up to the Games, she posted FINA A-standard entry times of 58.87 (100 m butterfly) and 2:08.72 (200 m butterfly) at the Danish Open Championships in Gladsaxe. On the first night of the competition, Østegaard closed out the field to last place and twenty-eighth overall in heat six of the 100 m butterfly by 0.07 of a second behind Slovak swimmer and five-time Olympian Martina Moravcová, dipping under a minute barrier at 59.10. In the 200 m butterfly, Østergaard entered the semifinals with a Danish record and eighth-seeded time of 2:07.77, but missed out of the top 8 final after finishing her semifinal run in eleventh overall at 2:09.29. Østergaard also teamed up with Louise Mai Jansen, Julie Hjorth-Hansen, and Lotte Friis in the 4 × 200 m freestyle relay. Swimming the second leg, Østergaard recorded a split of 2:01.67, and the Danish team finished the prelims in tenth overall with a new national record of 8:00.81.