| Holyhead to Columbia (Illinois) | 3,984.81 mi (6,412.92 km) |
| Holyhead to Columbia (Maryland) | 3,426.85 mi (5,514.98 km) |
| Holyhead to Columbia (Missouri) | 4,040.76 mi (6,502.97 km) |
| Holyhead to Columbia (Pennsylvania) | 3,374.20 mi (5,430.25 km) |
| Holyhead to Columbia (South Carolina) | 3,834.95 mi (6,171.75 km) |
| Holyhead to Columbia (Tennessee) | 4,001.60 mi (6,439.96 km) |
| Holyhead to Columbia Heights (Minnesota) | 3,780.19 mi (6,083.63 km) |
| Holyhead to Columbine (Colorado) | 4,469.32 mi (7,192.67 km) |
| Holyhead to Columbus (Georgia) | 4,070.47 mi (6,550.79 km) |
| Holyhead to Columbus (Indiana) | 3,783.31 mi (6,088.65 km) |
| Holyhead to Columbus (Mississippi) | 4,160.71 mi (6,696.01 km) |
| Holyhead to Columbus (Nebraska) | 4,102.56 mi (6,602.43 km) |
| Holyhead to Columbus (Ohio) | 3,632.64 mi (5,846.17 km) |
| Holyhead to Commack (New York) | 3,209.44 mi (5,165.10 km) |
| Holyhead to Commerce (California) | 5,215.32 mi (8,393.25 km) |
