North Carolina Swimming clubs and area colleges were among teams from throughout the country competing at the 2018 USA Swimming Winter Nationals in Greensboro. There were outstanding performances from some of the sport’s most elite competitors. Olympic champions Katie Ledecky, Nathan Adrian, and Simone Manuel each earned wins at the event. North Carolina-based swimmers were paced by TAC’s Ashley Twichell who swam for the cycle with a first in the 1500m free, a second in the 800m free, and a third in the 400m free. Other North Carolina-based swimmers with top eight finishes included:
| Name | Club | Place | Event | |
| Abby Arens | MOR | 5 | Women’s | 100m breast |
| Abby Arens | MOR | 7 | Women’s | 200m breast |
| Bryanna Cameron | UNC | 6 | Women’s | 200m fly |
| Will Countie | UNCW | 8 | Men’s | 100m back |
| Claire Curzan | TAC | 6 | Women’s | 100m fly |
| Claire Curzan | TAC | 8 | Women’s | 50m free |
| Ross Dant | YSST | 3 | Men’s | 800m free |
| Ross Dant | YSST | 5 | Men’s | 1500m free |
| Sophie Hanson | NCS | 2 | Women’s | 100m breast |
| Noah Henderson | STAR | 8 | Men’s | 100m fly |
| Charlotte Hook | TAC | 3 | Women’s | 200m fly |
| Anton Ipson | WOLF | 2 | Men’s | 1500m free |
| Madison Kennedy | MAC | 2 | Women’s | 50m free |
| Sophie Lindner | UNC | 8 | Women’s | 200m back |
| Ashley McCauley | MOR | 5 | Women’s | 200m breast |
| Makayla Sargent | NCS | 4 | Women’s | 400m IM |
| Ashley Twichell | TAC | 1 | Women’s | 1500m free |
| Ashley Twichell | TAC | 2 | Women’s | 800m free |
| Ashley Twichell | TAC | 3 | Women’s | 400m free |
Several NCS athletes also earned swims in the B and C Finals.
