| Phoenixville to Octeville | 3,527.38 mi (5,676.76 km) |
| Phoenixville to Oignies | 3,700.19 mi (5,954.88 km) |
| Phoenixville to Oissel | 3,649.40 mi (5,873.14 km) |
| Phoenixville to Olivet | 3,721.59 mi (5,989.32 km) |
| Phoenixville to Ollioules | 4,032.65 mi (6,489.93 km) |
| Phoenixville to Olonne-sur-Mer | 3,595.94 mi (5,787.11 km) |
| Phoenixville to Oloron-Sainte-Marie | 3,738.38 mi (6,016.35 km) |
| Phoenixville to Onet Village | 3,849.58 mi (6,195.29 km) |
| Phoenixville to Onnaing | 3,727.00 mi (5,998.03 km) |
| Phoenixville to Orange | 3,955.19 mi (6,365.27 km) |
| Phoenixville to Orchies | 3,710.31 mi (5,971.17 km) |
| Phoenixville to Orleans | 3,720.93 mi (5,988.26 km) |
| Phoenixville to Orly | 3,719.41 mi (5,985.81 km) |
| Phoenixville to Ormesson-sur-Marne | 3,724.45 mi (5,993.92 km) |
| Phoenixville to Orsay | 3,711.93 mi (5,973.78 km) |
