Competitors for 2018 Ultra Marathon Swimming World Series
| Athlete | Country | Sports | Date of birth |
|---|---|---|---|
| Guillermo Bértola |  ARG |
OWS | 26 December 1989 |
| Cecilia Biagioli | ARG |
OWS/SWI | 3 January 1985 |
| Simone Ercoli |  ITA |
OWS/SWI | 5 May 1979 |
| Alice Franco | ITA |
OWS | 10 February 1989 |
| Barbara Pozzobon | ITA |
OWS | 17 September 1993 |
| Edoardo Stochino | ITA |
OWS | 5 November 1987 |