| North Walsham to Orbetello | 849.11 mi (1,366.50 km) |
| North Walsham to Oria | 1,142.90 mi (1,839.31 km) |
| North Walsham to Oristano | 955.06 mi (1,537.02 km) |
| North Walsham to Orta Nova | 1,037.59 mi (1,669.84 km) |
| North Walsham to Orte | 878.06 mi (1,413.09 km) |
| North Walsham to Ortona | 941.12 mi (1,514.58 km) |
| North Walsham to Orvieto | 855.52 mi (1,376.83 km) |
| North Walsham to Orzinuovi | 641.22 mi (1,031.95 km) |
| North Walsham to Osimo | 850.49 mi (1,368.72 km) |
| North Walsham to Ospitaletto | 636.18 mi (1,023.84 km) |
| North Walsham to Ostuni | 1,128.40 mi (1,815.98 km) |
| North Walsham to Ottaviano | 1,029.57 mi (1,656.93 km) |
| North Walsham to Ovada | 654.29 mi (1,052.97 km) |
| North Walsham to Ozieri | 918.04 mi (1,477.44 km) |
| North Walsham to Paceco | 1,156.36 mi (1,860.99 km) |
