| Prestwick to Octeville | 424.16 mi (682.61 km) |
| Prestwick to Oignies | 469.33 mi (755.31 km) |
| Prestwick to Oissel | 488.07 mi (785.48 km) |
| Prestwick to Olivet | 596.01 mi (959.18 km) |
| Prestwick to Ollioules | 972.69 mi (1,565.40 km) |
| Prestwick to Olonne-sur-Mer | 631.10 mi (1,015.66 km) |
| Prestwick to Oloron-Sainte-Marie | 868.51 mi (1,397.73 km) |
| Prestwick to Onet Village | 832.09 mi (1,339.11 km) |
| Prestwick to Onnaing | 490.77 mi (789.82 km) |
| Prestwick to Orange | 888.28 mi (1,429.54 km) |
| Prestwick to Orchies | 476.09 mi (766.19 km) |
| Prestwick to Orleans | 593.77 mi (955.57 km) |
| Prestwick to Orly | 552.55 mi (889.24 km) |
| Prestwick to Ormesson-sur-Marne | 553.37 mi (890.56 km) |
| Prestwick to Orsay | 550.72 mi (886.29 km) |
