Competitors for 2019 Ultra Marathon Swimming World Series
| Athlete | Country | Sports | Date of birth |
|---|---|---|---|
| Julia Arino |  ARG |
OWS/SWI | 31 July 1991 |
| Guillermo Bértola | ARG |
OWS | 26 December 1989 |
| Cecilia Biagioli | ARG |
OWS/SWI | 3 January 1985 |
| Franco Cassini | ARG |
OWS/SWI | 21 January 1994 |
| Joaquín Moreno | ARG |
OWS/SWI | 1 December 1997 |
| Barbara Pozzobon |  ITA |
OWS | 17 September 1993 |