| Gloucester to Nowy Dwor Mazowiecki | 970.16 mi (1,561.32 km) |
| Gloucester to Nowy Sacz | 1,010.57 mi (1,626.36 km) |
| Gloucester to Nowy Targ | 984.87 mi (1,585.00 km) |
| Gloucester to Nowy Tomysl | 778.70 mi (1,253.19 km) |
| Gloucester to Nysa | 851.04 mi (1,369.62 km) |
| Gloucester to Oborniki | 805.62 mi (1,296.51 km) |
| Gloucester to Oborniki Slaskie | 820.59 mi (1,320.61 km) |
| Gloucester to Olawa | 842.40 mi (1,355.72 km) |
| Gloucester to Olecko | 1,035.51 mi (1,666.50 km) |
| Gloucester to Olesnica | 842.31 mi (1,355.56 km) |
| Gloucester to Olesno | 890.81 mi (1,433.62 km) |
| Gloucester to Olkusz | 949.50 mi (1,528.07 km) |
| Gloucester to Olsztyn | 953.76 mi (1,534.92 km) |
| Gloucester to Opalenica | 790.54 mi (1,272.26 km) |
| Gloucester to Opoczno | 963.26 mi (1,550.22 km) |
