Mary St. John
| Year: | Sr. |
| Hometown: | Bethesda, Md. |
| High School: | Sidwell Friends School |
| Major: | Mathematical Sciences |
| Event: | IM/Fly |
| Club Team: | Nation's Capital Swim Club |
Career Best Times
| Event | Time | Meet | Year |
| 100-yard Fly | 57.55 | Total Performance Invitational | 2017-18 |
| 200-yard Fly | 2:04.20 | UAA Championships | 2017-18 |
| 200-yard IM | 2:06.59 | UAA Championships | 2017-18 |
| 400-yard IM | 4:26.16 | NCAA Championships | 2017-18 |
Awards and Accolades
- CSCAA Scholar All-America in 2017-18
- All-America Honorable Mention in 400-yard IM in 2017-18
- Competed at NCAA Championships in 200-yard butterfly, 200-yard IM and 400-yard IM (15th place)
- Set school record in 400-yard medley relay in 2017-18
- CSCAA Scholar All-America in 2016-17
- All-America Honorable Mention in 200-yard butterfly (15th place) in 2016-17
- Competed at NCAA Championships in 200-yard butterfly, 200-yard IM and 400-yard IM in 2016-17
- Recorded B cut time in 800-yard freestyle relay in 2016-17
- Competed in 200-yard butterfly, 200-yard IM and 400-yard IM at NCAA Championships, with a top finish of 17th in the 200-yard butterfly in 2015-16
- Recorded B cuts in 200-yard butterfly, 200-yard IM and 400-yard IM in 2015-16
- All-UAA third team in 200-yard butterfly in 2015-16
- Finished first on the team in the 200-yard butterfly, 200-yard IM and 400-yard IM in 2015-16
- Recorded B cuts in 200-yard butterfly and 400-yard IM in 2014
