Marita started playing golf at the age of 13 and as an amateur won three Norwegian Championships (2007, 2010, 2012). She represented Norway in seven European Championships and two World Championships and played college golf for the University of Tulsa for four years. Whilst at University she secured 10 top 10 finishes and one victory.
Marita played on LPGA in 2013 and following that played four years on the Symetra Tour, winning the 2014 Symetra Tour Championship. Marita struggled with injuries in both 2015 and 2016 and returned to qualify for the LET after finishing T5 fifth at the Lalla Aicha Qualifying School in Morocco.
Marita has had four holes in one and her lowest round is a 64 (-8).