[5] In 2020, she achieved the world leading mark in the 400 meters, with a time of 51.32, set in the prelims of the Toyota USATF Indoor Championships.

Jonathas won 2 titles (200 m, 400 m) at 2018 NCAA Division III Outdoor Track & Field Championships as a sophomore at UMass-Boston and finished 5th in long jump final.

[8] Jonathas won 4 titles (60 m, 200 m, 400 m, Long jump) at 2018 NCAA Division III Indoor Track & Field Championships as a sophomore at University of Massachusetts Boston.

[9] Jonathas won 2 titles (200 m, 400 m) at 2017 NCAA Division III Outdoor Track & Field Championships as a freshman at UMass-Boston.

Jonathas won her first National Collegiate Athletic Association title (400 m) while earning All-American honors in 200 metres and Long jump at 2017 NCAA Division III Indoor Track & Field Championships as a freshman at University of Massachusetts Boston.