| Kastamonu to Nottingham | 1,801.50 mi (2,899.24 km) |
| Kastamonu to Nuneaton | 1,808.56 mi (2,910.59 km) |
| Kastamonu to Oadby | 1,793.45 mi (2,886.27 km) |
| Kastamonu to Oakengates | 1,851.29 mi (2,979.36 km) |
| Kastamonu to Oakham | 1,780.38 mi (2,865.25 km) |
| Kastamonu to Oldbury | 1,830.96 mi (2,946.65 km) |
| Kastamonu to Oldham | 1,849.24 mi (2,976.06 km) |
| Kastamonu to Ollerton | 1,799.92 mi (2,896.70 km) |
| Kastamonu to Olton | 1,821.43 mi (2,931.30 km) |
| Kastamonu to Omagh | 2,068.69 mi (3,329.23 km) |
| Kastamonu to Ormesby | 1,828.97 mi (2,943.44 km) |
| Kastamonu to Ormskirk | 1,880.47 mi (3,026.33 km) |
| Kastamonu to Orpington | 1,728.34 mi (2,781.49 km) |
| Kastamonu to Ossett | 1,829.84 mi (2,944.84 km) |
| Kastamonu to Oswaldtwistle | 1,863.22 mi (2,998.57 km) |
