| Pittsfield to Octeville | 3,338.71 mi (5,373.14 km) |
| Pittsfield to Oignies | 3,509.15 mi (5,647.43 km) |
| Pittsfield to Oissel | 3,460.24 mi (5,568.72 km) |
| Pittsfield to Olivet | 3,534.04 mi (5,687.49 km) |
| Pittsfield to Ollioules | 3,849.73 mi (6,195.55 km) |
| Pittsfield to Olonne-sur-Mer | 3,411.76 mi (5,490.69 km) |
| Pittsfield to Oloron-Sainte-Marie | 3,559.01 mi (5,727.67 km) |
| Pittsfield to Onet Village | 3,666.61 mi (5,900.84 km) |
| Pittsfield to Onnaing | 3,535.88 mi (5,690.45 km) |
| Pittsfield to Orange | 3,771.42 mi (6,069.51 km) |
| Pittsfield to Orchies | 3,519.19 mi (5,663.59 km) |
| Pittsfield to Orleans | 3,533.33 mi (5,686.34 km) |
| Pittsfield to Orly | 3,530.56 mi (5,681.89 km) |
| Pittsfield to Ormesson-sur-Marne | 3,535.50 mi (5,689.84 km) |
| Pittsfield to Orsay | 3,523.21 mi (5,670.06 km) |
