| Milnrow to Orbetello | 983.96 mi (1,583.52 km) |
| Milnrow to Oria | 1,289.53 mi (2,075.30 km) |
| Milnrow to Oristano | 1,071.18 mi (1,723.90 km) |
| Milnrow to Orta Nova | 1,182.17 mi (1,902.52 km) |
| Milnrow to Orte | 1,016.90 mi (1,636.54 km) |
| Milnrow to Ortona | 1,085.07 mi (1,746.25 km) |
| Milnrow to Orvieto | 994.24 mi (1,600.07 km) |
| Milnrow to Orzinuovi | 781.44 mi (1,257.60 km) |
| Milnrow to Osimo | 995.07 mi (1,601.41 km) |
| Milnrow to Ospitaletto | 777.48 mi (1,251.23 km) |
| Milnrow to Ostuni | 1,275.35 mi (2,052.48 km) |
| Milnrow to Ottaviano | 1,170.24 mi (1,883.32 km) |
| Milnrow to Ovada | 786.11 mi (1,265.11 km) |
| Milnrow to Ozieri | 1,038.01 mi (1,670.52 km) |
| Milnrow to Paceco | 1,284.61 mi (2,067.37 km) |
