| Downham Market to Octeville | 223.53 mi (359.73 km) |
| Downham Market to Oignies | 184.90 mi (297.56 km) |
| Downham Market to Oissel | 227.17 mi (365.59 km) |
| Downham Market to Olivet | 333.95 mi (537.45 km) |
| Downham Market to Ollioules | 700.39 mi (1,127.16 km) |
| Downham Market to Olonne-sur-Mer | 429.98 mi (691.99 km) |
| Downham Market to Oloron-Sainte-Marie | 651.50 mi (1,048.49 km) |
| Downham Market to Onet Village | 577.75 mi (929.80 km) |
| Downham Market to Onnaing | 205.89 mi (331.35 km) |
| Downham Market to Orange | 618.54 mi (995.45 km) |
| Downham Market to Orchies | 191.30 mi (307.88 km) |
| Downham Market to Orleans | 331.41 mi (533.35 km) |
| Downham Market to Orly | 280.46 mi (451.36 km) |
| Downham Market to Ormesson-sur-Marne | 279.77 mi (450.25 km) |
| Downham Market to Orsay | 280.84 mi (451.96 km) |
