| San Pietro in Casale to Nottingham | 804.70 mi (1,295.05 km) |
| San Pietro in Casale to Nuneaton | 796.41 mi (1,281.71 km) |
| San Pietro in Casale to Oadby | 786.74 mi (1,266.13 km) |
| San Pietro in Casale to Oakengates | 836.59 mi (1,346.36 km) |
| San Pietro in Casale to Oakham | 778.81 mi (1,253.37 km) |
| San Pietro in Casale to Oldbury | 814.10 mi (1,310.17 km) |
| San Pietro in Casale to Oldham | 861.57 mi (1,386.56 km) |
| San Pietro in Casale to Ollerton | 811.73 mi (1,306.36 km) |
| San Pietro in Casale to Olton | 804.22 mi (1,294.27 km) |
| San Pietro in Casale to Omagh | 1,074.05 mi (1,728.51 km) |
| San Pietro in Casale to Ormesby | 880.60 mi (1,417.19 km) |
| San Pietro in Casale to Ormskirk | 887.16 mi (1,427.74 km) |
| San Pietro in Casale to Orpington | 695.20 mi (1,118.82 km) |
| San Pietro in Casale to Ossett | 850.96 mi (1,369.49 km) |
| San Pietro in Casale to Oswaldtwistle | 879.03 mi (1,414.67 km) |
