| Pett. | Atleta | Anno | Cat. | Società | Accredito |
| 106 | BRONZINI Lorenzo | 2002 | SM21 | AN010 POLISPORTIVA SENIGALLIA ASD | 45.8 |
| 52 | BELIG Axel | 1994 | AM21 | FI009 RARI NANTES FLORENTIA ASD | 34.68 |
| 656 | SCOTTI Andrea | 1999 | SM21 | CR005 ASD DELFINI CREMONA ONLUS | 34.69 |
| 406 | MANAUZZI Paolo Alfredo | 1990 | AM21 | LT004 POLISPORTIVA HYPERION ONLUS AS | 35.8 |
| 671 | SIMONI Davide | 1993 | AM21 | LI002 ZENITH LIVORNO ASD A.P.S. | 38.92 |
| 564 | PIZZINI Federico | 1999 | SM21 | CO002 ASD ICE CLUB COMO | 40.07 |
| 580 | RAMPONI Paolo | 2004 | JM21 | BS002 ASD POLISPORTIVA BRESCIANA NO | 40.88 |
| 334 | GRENDENE Andrea | 1997 | SM21 | TV001 SPORT LIFE ONLUS A.S.D. | 41.0 |
| 67 | BICCIATO Luca | 1979 | MM21 | PD001 ASD A.S.P.E.A. PADOVA ONLUS | 41.3 |
| 174 | CLEMENTE Christian | 1992 | AM21 | VE004 POLISPORTIVA TERRAGLIO SRL SSD | 41.5 |
| 587 | REBECCHI Matteo | 1999 | SM21 | TN003 ASD BUONCONSIGLIO NUOTO | 43.39 |
| 89 | BRAGHIN Stefano | 1992 | AM21 | RO005 PETTIROSSO ASSOCIAZIONE SPORTI | 43.8 |
| 249 | FADINI Gabriele | 2000 | SM21 | VR014 ASD VERONA SWIMMING TEAM | 44.00 |
| 264 | FINAZZI Luca | 1982 | MM21 | VA007 VHARESE - ASS. POL. DIL. PER D | 44.3 |
| 311 | GIAMBARTOLOMEI Matteo | 1996 | SM21 | AN009 SSD TEAM MARCHE CIS S.R.L. | 44.6 |
| 49 | BEGNINI Luca Yutaka | 2004 | JM21 | BG001 PHB POLISPORTIVA BERGAMASCA ON | 48.9 |
| 416 | MANIERO Giuseppe | 1977 | MM21 | PD001 ASD A.S.P.E.A. PADOVA ONLUS | 50.50 |
| 130 | CAROLLO Michael | 1994 | AM21 | VR013 SPORT MANAGEMENT SPA SSD | 51.2 |
| 152 | CESCA Alex | 2000 | SM21 | MC001 ANTHROPOS ASD POLISPORTIVA E C | 51.7 |
| 720 | VECCHIARELLI Mirco | 1993 | AM21 | FM002 VIRTUS BUONCONVENTO SSD A.R.L. | 52.0 |
| 104 | BRIVIO Alessandro | 1999 | SM21 | LC002 A.S.D. OLTRETUTTO 97 | 52.01 |
| 385 | LONATI Gabriele | 2002 | SM21 | BS002 ASD POLISPORTIVA BRESCIANA NO | 52.3 |
| 377 | LEONI Giacomo | 1987 | AM21 | VR013 SPORT MANAGEMENT SPA SSD | 54.0 |
| 219 | DE MARCH Manuel | 1995 | AM21 | PU002 A.I.S.P.O.D. | 54.4 |
| 493 | MUSCIO Giorgio | 1971 | MM21 | BS002 ASD POLISPORTIVA BRESCIANA NO | 55.8 |
| 530 | PASQUALINOTTO Marco | 1989 | AM21 | VE003 A.S. ALBA CHIARA | 57.2 |
| 371 | LAZZARI Fabrizio | 1982 | MM21 | LC002 A.S.D. OLTRETUTTO 97 | 59.20 |
| 369 | LATORRATA Andrea | 1989 | AM21 | CO001 OSHA A.S.D. - APS | 1:02.45 |
| 113 | BYLYKU Michele | 2002 | SM21 | AN002 ASS. DIL. POL. DISABILI FABRIA | 1:04.7 |
| 867 | MIGLIORE Davide | 1998 | SM21 | PA028 SPECIAL BOYS ASD | |
|