| Glossop to Orbetello | 971.01 mi (1,562.69 km) |
| Glossop to Oria | 1,277.31 mi (2,055.63 km) |
| Glossop to Oristano | 1,057.87 mi (1,702.47 km) |
| Glossop to Orta Nova | 1,169.77 mi (1,882.56 km) |
| Glossop to Orte | 1,004.13 mi (1,616.00 km) |
| Glossop to Ortona | 1,072.63 mi (1,726.22 km) |
| Glossop to Orvieto | 981.47 mi (1,579.52 km) |
| Glossop to Orzinuovi | 768.80 mi (1,237.26 km) |
| Glossop to Osimo | 982.69 mi (1,581.49 km) |
| Glossop to Ospitaletto | 764.91 mi (1,231.00 km) |
| Glossop to Ostuni | 1,263.16 mi (2,032.86 km) |
| Glossop to Ottaviano | 1,157.56 mi (1,862.91 km) |
| Glossop to Ovada | 773.09 mi (1,244.16 km) |
| Glossop to Ozieri | 1,024.72 mi (1,649.13 km) |
| Glossop to Paceco | 1,271.43 mi (2,046.17 km) |
