At the 2006 European Championships in Budapest, she clocked the then fastest-ever split in the 4×200 m freestyle relay (1.55.64), helping the Germany team to break the world record in the event with their 7.50.82.

Other members of the relay were: Petra Dallmann, Daniela Samulski, and Britta Steffen.

Also in the pool during the 4×200 m freestyle relay was France's Laure Manaudou, who swam the then-second fastest split ever (1.56.23).

Also at the 2006 European Championships, Annika also swam on Germany's 4×100 m freestyle relay that also set a new world record (3:35.22).

[4] One month after the 2006 European Championships finished, Annika married her coach Stefan Lurz.