| Southborough to Octeville | 135.21 mi (217.59 km) |
| Southborough to Oignies | 128.30 mi (206.48 km) |
| Southborough to Oissel | 130.80 mi (210.50 km) |
| Southborough to Olivet | 239.23 mi (385.01 km) |
| Southborough to Ollioules | 612.66 mi (985.97 km) |
| Southborough to Olonne-sur-Mer | 332.60 mi (535.27 km) |
| Southborough to Oloron-Sainte-Marie | 551.88 mi (888.16 km) |
| Southborough to Onet Village | 481.66 mi (775.16 km) |
| Southborough to Onnaing | 155.07 mi (249.56 km) |
| Southborough to Orange | 528.99 mi (851.33 km) |
| Southborough to Orchies | 138.38 mi (222.70 km) |
| Southborough to Orleans | 236.81 mi (381.10 km) |
| Southborough to Orly | 191.84 mi (308.73 km) |
| Southborough to Ormesson-sur-Marne | 192.61 mi (309.98 km) |
| Southborough to Orsay | 190.35 mi (306.34 km) |
