We have compiled for you all results and videos from the 2018 U.S. Senior National Championship held in Oro Valley, Arizona.
Technical Solo
| Rank | Club/School | Swimmer | Score |
| 1 | Lindenwood University | Marialaura Villasana | 75.3002 |
| 2 | Lindenwood University | Kyra Hoevertsz | 74.1357 |
| 3 | Optima Synchro | Lindi Schroeder | 74.0096 |
| 4 | Lindenwood University | Oyku Evliya | 72.3571 |
| 5 | San Dieguito Synchro | Lily Kreps | 63.0881 |
| 6 | M Synchronized Swimming | Alice Jiang | 61.1030 |
| 7 | Unaffiliated | Delaney Simmons | 59.9690 |
| 8 | Houston Synchro Stars | Marelys Sanchez | 58.1417 |
| 9 | Nova Synchro | Ulia Ahn | 57.8653 |
| 10 | M Synchronized Swimming | Erica Matsui | 56.9128 |
| 11 | Synchros Maids of YWCA | Kaitlyn Madden | 53.9415 |
Free Solo
| Rank | Club/School | Swimmer | Score |
| 1 | Scottsdale Synchro | Aly Haylor | 80.2333 |
| 2 | Lindenwood University | Kyra Hoevertsz | 80.2000 |
| 3 | Lindenwood University | Marialaura Villasana | 79.6333 |
| 4 | Optima Synchro | Lindi Schroeder | 78.6000 |
| 5 | Lindenwood University | Oyku Evliya | 76.4333 |
| 6 | Dayton Aqua Gems | Ava Lichter | 75.6000 |
| 7 | University of Arizona | Eryn Schmisseur | 75.4000 |
| 8 | Cincinnati YMCA Synchrogators | Chris Leahy | 72.0000 |
| 9 | Houston Synchro Stars | Gloria Chen | 70.3000 |
| 10 | Arizona Desert Dolphins | Jenna Nichols | 70.0000 |
| 11 | San Dieguito Synchro | Lily Kreps | 69.5000 |
| 12 | Unaffiliated | Delaney Simmons | 69.4667 |
| 13 | Houston Synchro Stars | Marelys Sanchez | 67.0333 |
| 14 | Houston Synchro Stars | Nelly Akhmadikina | 66.5667 |
| 15 | M Synchronized Swimming | Alice Jiang | 64.5000 |
| 16 | Nova Synchro | Ulia Ahn | 62.9667 |
| 17 | M Synchronized Swimming | Erica Matsui | 61.9667 |
| 18 | Synchro Maids of YWCA | Kaitlyn Madden | 60.7000 |
Technical Duet
| Rank | Club/School | Swimmers | Score |
| 1 | San Dieguito Synchro | Kreps L., Kreps P. | 64.2879 |
| 2 | Houston Synchro Stars | Chen, Sanchez | 63.8442 |
| 3 | Houston Synchro Stars | Akhmadikina, Duenas, Falconer (R) | 59.5558 |
| 4 | M Synchronized Swimming | Gu, Matsui | 57.5699 |
| 5 | Nova Synchro | Ahn, Werrlein | 54.4531 |
Free Duet
| Rank | Club/School | Swimmers | Score |
| 1 | Scottsdale Synchro | Haylor, Zhang | 81.000 |
| 2 | Lindenwood University | Lukovysky, Villasana, Soares (R) | 80.5667 |
| 3 | Santa Clara Aquamaids | Chow, Hoang | 75.3000 |
| 4 | University of Arizona | Schmisseur, Stallworth | 74.9667 |
| 5 | Santa Clara Aquamaids | Lu, Walsh | 74.9333 |
| 6 | Lindenwood University | Richardson, Vasquez Escalona | 74.2333 |
| 7 | Rocky Mountain Splash | Papper, Salley | 71.8333 |
| 8 | Houston Synchro Stars | Chen, Sanchez | 69.6667 |
| 9 | Carolina Synchro Club | Catahan, Oliver | 68.9000 |
| 10 | San Dieguito Synchro | Kreps L., Kreps P. | 67.9667 |
| 11 | Houston Synchro Stars | Duenas, Falconer, Akhmadikina (R) | 67.5333 |
| 12 | Arizona Desert Dolphins | Nichols, Ray, Haynes (R) | 66.9333 |
| 13 | Arizona Desert Dolphins | Burdette, Zimmerman | 64.2333 |
| 14 | Nova Synchro | Ahn, Werrlein | 61.1333 |
| 15 | M Synchronized Swimming | Gu, Matsui | 61.0000 |
Technical Team
| Rank | Club/School | Swimmers | Score |
| 1 | Santa Clara Aquamaids | Carrasco, Chow, Dzurko, Heinrich, Lu, Nguyen, Schafer, Walsh, Hoang (R) | 74.7827 |
| 2 | Lindenwood University | Evliya, Hein-Salvi, Hoevertsz, Kasse, Lukovysky, Richardson, Ross, Soares, Villasana (R) | 74.7010 |
| 3 | Carolina Synchro Club | Auten, Catahan, Cupples A., Cupples C., Dolack, Oliver, Stump | 66.1738 |
| 4 | Lindenwood University | Alonso, Lehmann, Mrachko, Pazienza, Poteet, Thurlow, Vasquez Escalona, Wojtysiak, Campocasso (R) | 66.0013 |
| 5 | M Synchronized Swimming | Gu, Jiang, Kim, Matsui | 60.1222 |
| 6 | Carolina Synchro Club | Anderson B., Anderson E., Bostian, Dolack | 55.2793 |
Free Team
| Rank | Club/School | Swimmers | Score |
| 1 | Lindenwood University | Hein-Salvi, Hoevertsz, Kasse, Lukovysky, Poteet, Richardson, Vasquez Escalona, Villasana, Soares (R) | 82.1000 |
| 2 | Santa Clara Aquamaids | Carrasco, Chow, Dzurko, Heinrich, Hoang, Lu, Nguyen, Walsh, Suarez (R), Schafer (R) | 79.6000 |
| 3 | Lindenwood University | Alonso, Campocaso, Evliya, Lehmann, Mrachko, Ross, Thurlow, Wojtysiak, Pazienza (R) | 78.6667 |
| 4 | University of Arizona | Hafner, Mehrara, Schmisseur E., Schmisseur S., Stallworth | 73.7500 |
| 5 | Arizona Desert Dolphins | Baca, Burdette, Haynes, Miller, Nichols, Ray, Zimm, Zimmerman | 71.2667 |
| 6 | Rocky Mountain Splash | Anton, Bailey, Birdsall, Gao, Hensley, Papper, Salley | 68.5500 |
| 7 | Carolina Synchro Club | Auten, Catahan, Cupples A., Cupples C., Dolack, Oliver, Stump | 68.1833 |
| 8 | Carolina Synchro Club | Anderson B., Anderson E., Bostian, Dolack | 63.0000 |
| 9 | M Synchronized Swimming | Gu, Jiang, Kim, Matsui | 61.1333 |
Free Combination
| Rank | Club/School | Swimmers | Score |
| 1 | Santa Clara Aquamaids | Carrasco, Chow, Dzurko, Heinrich, Hoang, Lu, Nguyen, Schafer, Suarez, Walsh | 80.2667 |
| 2 | Arizona Desert Dolphins | Baca, Burdette, Haynes, Miller, Nichols, Portilla, Ray, Wang, Zimm, Zimmerman, Kuwabara (R), Davis (R) | 72.0000 |
Overall Standings
| Rank | Club/School | Points |
| 1 | Lindenwood University | 148 |
| 2 | Santa Clara Aquamaids | 78 |
| 3 | Houston Synchro Stars | 42 |
| 4 | M Synchronized Swimming | 40 |
| 5 | Arizona Desert Dolphins | 39 |
| 6T | San Dieguito Synchro | 29 |
| 6T | Scottsdale Synchro | 29 |
| 6T | University of Arizona | 29 |
| 9 | Carolina Synchro Club | 24 |
| 10 | Optima Synchro | 19 |
| 11 | Rocky Mountain Splash | 18 |
| 12 | Nova Syncro | 13 |
| 13 | Dayton Aqua Gems | 7 |
| 13T | Unaffiliated | 7 |
| 15 | Cincinnati YMCA Synchrogators | 5 |
| 16 | Synchro-Maids of YWCA | 2 |