| Pittsfield to Oerlinghausen | 3,693.25 mi (5,943.71 km) |
| Pittsfield to Oestrich-Winkel | 3,724.51 mi (5,994.02 km) |
| Pittsfield to Offenburg | 3,768.23 mi (6,064.38 km) |
| Pittsfield to Oftersheim | 3,767.01 mi (6,062.41 km) |
| Pittsfield to Ohrdruf | 3,807.54 mi (6,127.64 km) |
| Pittsfield to Ohringen | 3,809.17 mi (6,130.27 km) |
| Pittsfield to Olbernhau | 3,913.65 mi (6,298.40 km) |
| Pittsfield to Olching | 3,914.62 mi (6,299.97 km) |
| Pittsfield to Oldenburg | 3,642.74 mi (5,862.42 km) |
| Pittsfield to Oldenburg in Holstein | 3,710.07 mi (5,970.78 km) |
| Pittsfield to Olfen | 3,650.42 mi (5,874.78 km) |
| Pittsfield to Olpe | 3,688.05 mi (5,935.35 km) |
| Pittsfield to Olsberg | 3,703.94 mi (5,960.92 km) |
| Pittsfield to Oranienburg | 3,843.40 mi (6,185.35 km) |
| Pittsfield to Ortenberg | 3,755.93 mi (6,044.59 km) |
