| Holyhead to Norton Shores (Michigan) | 3,610.93 mi (5,811.24 km) |
| Holyhead to Norwalk (California) | 5,218.18 mi (8,397.85 km) |
| Holyhead to Norwalk (Connecticut) | 3,203.02 mi (5,154.76 km) |
| Holyhead to Norwalk (Iowa) | 3,966.85 mi (6,384.03 km) |
| Holyhead to Norwalk (Ohio) | 3,559.68 mi (5,728.76 km) |
| Holyhead to Norwich (Connecticut) | 3,130.47 mi (5,038.01 km) |
| Holyhead to Norwood (Ohio) | 3,728.74 mi (6,000.83 km) |
| Holyhead to Novato (California) | 5,117.69 mi (8,236.13 km) |
| Holyhead to Novi (Michigan) | 3,537.17 mi (5,692.53 km) |
| Holyhead to O'Fallon (Illinois) | 3,966.51 mi (6,383.48 km) |
| Holyhead to O'Fallon (Missouri) | 3,987.89 mi (6,417.89 km) |
| Holyhead to Oak Creek (Wisconsin) | 3,685.89 mi (5,931.87 km) |
| Holyhead to Oak Forest (Illinois) | 3,739.96 mi (6,018.89 km) |
| Holyhead to Oak Grove (Oregon) | 4,700.14 mi (7,564.14 km) |
| Holyhead to Oak Grove (South Carolina) | 3,847.69 mi (6,192.25 km) |
