| 1 | SUI Schwimmverein Beider Basel | Ryhiner Lena, Von Bidder Lena, Meyer Malou, Meyer Lucas | 01'20''71 | |  |  | |
50m 40.45 (40.45) 100m 1:20.71 (40.26) [1:20.71] |
| 2 | SUI Schwimmclub Liestal | Neuhaus Lionel, Schroeder Maxim, Meyer Mina, Kindler Aron | 01'21''41 | | | | |
50m 38.80 (38.80) 100m 1:21.41 (42.61) [1:21.41] |
| 3 | SUI Schwimmverein Beider Basel | Slater Clea, Prime Isla, Cosse Edgar, Styner Anna | 01'22''33 | | | | |
50m 40.01 (40.01) 100m 1:22.33 (42.32) [1:22.33] |
| 4 | SUI Schwimmclub Bottmingen-Oberwil | Eichhorn Vitus, Emery Eleanor, Kaminski Mila, Leibfritz Peter | 01'24''32 | | | | |
50m 39.17 (39.17) 100m 1:24.32 (45.15) [1:24.32] |
| 5 | SUI Schwimmverein Beider Basel | Stadler Ian Riley, Jay Mathilde, Goetti Larina Carla, Stryzhov Nikyta | 01'24''73 | | | | |
50m 42.62 (42.62) 100m 1:24.73 (42.11) [1:24.73] |
| 6 | SUI Schwimmverein Beider Basel | Hak Alexander, Baur Jakob Elias, Farkas Emma Sara, Stahl Aurelie | 01'28''62 | | | | |
50m 41.01 (41.01) 100m 1:28.62 (47.61) [1:28.62] |
| 7 | SUI Schwimmclub Bottmingen-Oberwil | Petkova Yana, Niggli Elisha, Becker Ben, Bitterli Luis | 01'30''96 | | | | |
50m 43.61 (43.61) 100m 1:30.96 (47.35) [1:30.96] |
| 8 | SUI Schwimmclub Allschwil | Sowa Eric, Gloor Aline, Di Ciancia Ferreira Valentina, Staheli Kevin | 01'31''09 | | | | |
50m 49.13 (49.13) 100m 1:31.09 (41.96) [1:31.09] |
| 9 | SUI Schwimmclub Liestal | Gessesse Lara, Smejkalova Nela, Engels Elisa, De Franco Noelia | 01'32''42 | | | | |
50m 46.23 (46.23) 100m 1:32.42 (46.19) [1:32.42] |
| 10 | SUI Schwimmverein Beider Basel | Cajan Bonhard Svea, Bayhan Alp Efe, Vogelsang Viola, Stewart Margaux | 01'45''95 | | | | |
50m 53.17 (53.17) 100m 1:45.95 (52.78) [1:45.95] |
