[1] She is the Úrvalsdeild kvenna all-time career leader in rebounds[2] and in the league's top four in scoring, assists, steals and games played.
[3][4][5][4] After coming up through the junior ranks of Skallagrímur,[6] Sigrún started her senior career with Haukar in 2004, and helped the club to two national championships in 2006 and 2007.
She averaged 11.3 points and 11.3 rebounds for the season,[7] helping KR to the second best record in the league.
[11] Despite being offered a contract extension, she left the club after the season's end[12] and signed with KR.
[1] In 2014, Sigrún signed with Basketligan dam club Norrköping Dolphins[13][14] where she averaged 9.3 points and 5.4 rebounds in 27 regular season and playoffs games.
[24] Sigrún averaged 10.8 points, 7.4 rebounds and 3.4 assists during a difficult 2018–19 season where Skallagrímur stumbled to a 6-22 record, barely staving off relegation.