Kammala jumla mai zuwa: Friis an haife shi a Blovstrød. Na uku a tseren mita 1500 na 'yanci a gasar
Gasar Zakarun Turai ta 2008 a Eindhoven ta lashe lambar yabo ta farko. A Wasannin Olympics na bazara na 2008 a Beijing, ta lashe tagulla a gasar tseren mita 800. A Gasar Cin Kofin Duniya ta 2009 ta lashe azurfa a gasar tseren mita 1500 da zinare a gasar tseren mita 800 tare da na biyu mafi saurin lokaci da sabon rikodin gasar. A Gasar Cin Kofin Ruwa ta Duniya ta 2011 a Shanghai Friis ta lashe zinare a tseren mita 1500 na mata a cikin lokaci 15:49.59 da azurfa a tseren mita 800 na mata. Friis ta halarci tseren mita 400 na mata kuma ta kai wasan karshe. Ta gama a karo na biyar a cikin lokaci na 4:04.68, wanda shine sabon rikodin Nordic.