In 2011 Arna Sif became captain of Þór/KA and switched from playing in midfield to central defence.
After guiding the club to their first ever Úrvalsdeild title in 2012, she was named Akureyri's Athlete of the Year.
[2] Arna Sif joined Swedish Damallsvenskan club Kopparbergs/Göteborg FC in February 2015, after impressing in a short trial period.
[5] Arna Sif made her senior debut for the Iceland national team in August 2014, playing in a World Cup qualifying match lost to Denmark by 1-0 at Laugardalsvöllur in Reykjavík.
This biographical article related to women's association football in Iceland is a stub.