Kjersti Moritz initially began competing on skis with slope style, half pipe and alpine simultaneously until she honed in on her talents for alpine skiing alongside her twin sister Liv. 

Some of her top athletic achievements include tying with her sister for the GS win at U14 Championships and five top 10 results in the NorAm circuit for the 2022 season.

In the 2024-25 season Moritz showed strong results on the NorAm circuit where she scored multiple top-five results including fourth in the Lake Louise giant slalom and fifth in the Burke Mountain slalom. Moritz attended the 2025 Junior World Championships and landed eighth in the slalom - the top American that day. 

Other interests for Moritz include soccer, mountain biking, tennis and competing with her siblings. One of Mortiz’s pre-race rituals is to always put the right boot on first.