After he stopped playing handball professionally he embarked on a coaching career. In November 2011 Patrekur was appointed head coach for the Austrian national handball team.
Family
Patrekur is son of the teacher and journalist Margrét Thorlacius and the PE teacher and coach Jóhannes Sæmundsson. His father died of cancer at the age of 42. He is the brother of the historian and former President of IcelandGuðni Th. Jóhannesson, and of Jóhannes, who is a system analyst. His son is a popular rapper in Iceland, called JóiPé.[3]