| Holyhead to Nowy Dwor Mazowiecki | 1,053.38 mi (1,695.25 km) |
| Holyhead to Nowy Sacz | 1,113.26 mi (1,791.62 km) |
| Holyhead to Nowy Targ | 1,089.50 mi (1,753.38 km) |
| Holyhead to Nowy Tomysl | 866.85 mi (1,395.07 km) |
| Holyhead to Nysa | 952.98 mi (1,533.67 km) |
| Holyhead to Oborniki | 890.13 mi (1,432.53 km) |
| Holyhead to Oborniki Slaskie | 916.75 mi (1,475.37 km) |
| Holyhead to Olawa | 940.94 mi (1,514.29 km) |
| Holyhead to Olecko | 1,104.92 mi (1,778.20 km) |
| Holyhead to Olesnica | 938.66 mi (1,510.63 km) |
| Holyhead to Olesno | 988.32 mi (1,590.55 km) |
| Holyhead to Olkusz | 1,049.62 mi (1,689.21 km) |
| Holyhead to Olsztyn | 1,026.14 mi (1,651.41 km) |
| Holyhead to Opalenica | 878.54 mi (1,413.87 km) |
| Holyhead to Opoczno | 1,054.85 mi (1,697.62 km) |
