Katrín missed qualification in 2014 due to a relatively poor performance at the Europe Regional on Event 5, a combination of legless rope climbs and sprints.
[10] In the end, 9 points separated Katrín from the final 2014 Games qualifier out of the Europe Regional, third-ranked Norwegian athlete Kristin Holte.
[11] She beat off a challenge from Tia-Clair Toomey to become the 3rd athlete (after Rich Froning and Anníe Mist Þórisdóttir) to have repeated their win at the Games.
[15] In the Covid-19-affected season, Katrín won two events and finished fourth in Stage 1 to become one of five female athletes who can compete in person at the ranch in Aromas.
[16][17] At the Stage 2 of the Games, in a much-reduced field dominated by Tia-Clair Toomey, she managed one event win and returned to the podium, finishing in 2nd place.
[25] In 2021, Katrin left CompTrain and moved to train at Reebok CrossFit Reykjavik under coach Jami Tikkanen.
[27] After failing to qualify for the 2022 CrossFit Games, she moved to Mat Fraser's HWPO training camp.
[28] Katrín appeared on the 30th season premiere of The Amazing Race, where she asked teams to identify two national tonics: Brennivín and Þorskalýsi.