| Slovenj Gradec to Nottingham | 847.73 mi (1,364.29 km) |
| Slovenj Gradec to Nuneaton | 847.82 mi (1,364.43 km) |
| Slovenj Gradec to Oadby | 834.77 mi (1,343.43 km) |
| Slovenj Gradec to Oakengates | 890.50 mi (1,433.11 km) |
| Slovenj Gradec to Oakham | 823.70 mi (1,325.62 km) |
| Slovenj Gradec to Oldbury | 868.68 mi (1,398.01 km) |
| Slovenj Gradec to Oldham | 901.36 mi (1,450.60 km) |
| Slovenj Gradec to Ollerton | 850.29 mi (1,368.41 km) |
| Slovenj Gradec to Olton | 858.74 mi (1,382.02 km) |
| Slovenj Gradec to Omagh | 1,122.57 mi (1,806.61 km) |
| Slovenj Gradec to Ormesby | 901.15 mi (1,450.27 km) |
| Slovenj Gradec to Ormskirk | 930.65 mi (1,497.74 km) |
| Slovenj Gradec to Orpington | 756.51 mi (1,217.48 km) |
| Slovenj Gradec to Ossett | 885.83 mi (1,425.60 km) |
| Slovenj Gradec to Oswaldtwistle | 917.51 mi (1,476.59 km) |
