Catlin started cycling at age 17. She participated in the UCI Track Cycling World Championships three times and won gold medals in all of them. Catlin won gold medals in the women's team pursuit at the 2016, 2017, and 2018 UCI Track Cycling World Championships. She also won a silver medal in the same event at the 2016 Summer Olympics. She was a member of the women's team of Rally UHC Cycling.