Dunmore began competing at the AAU Junior Olympics as early as 2010, winning a U19 title over 400 m in 2015.

[3] As a member of the Oregon Ducks track and field team, Dunmore won NCAA relay titles at the 2017 outdoor 4 × 400 m and the 2019 indoor distance medley.

[3] After a two-year hiatus, Dunmore transferred to the South Carolina Gamecocks track and field as a graduate student.

She then achieved her best individual 400 m showing of 9th at the 2022 NCAA Division I Outdoor Track and Field Championships.

[4] However, she ultimately was not selected to run the heats or finals of the 4 × 400 m.[1] Dunmore is from Powder Springs, Georgia where she attended McEachern High School.