| Petrich to Oignies | 1,150.31 mi (1,851.25 km) |
| Petrich to Oissel | 1,199.61 mi (1,930.59 km) |
| Petrich to Olivet | 1,134.24 mi (1,825.38 km) |
| Petrich to Ollioules | 894.11 mi (1,438.94 km) |
| Petrich to Olonne-sur-Mer | 1,285.91 mi (2,069.47 km) |
| Petrich to Oloron-Sainte-Marie | 1,219.24 mi (1,962.17 km) |
| Petrich to Onet Village | 1,060.65 mi (1,706.95 km) |
| Petrich to Onnaing | 1,123.89 mi (1,808.72 km) |
| Petrich to Orange | 950.08 mi (1,529.01 km) |
| Petrich to Orchies | 1,140.52 mi (1,835.50 km) |
| Petrich to Orleans | 1,134.57 mi (1,825.91 km) |
| Petrich to Orly | 1,130.48 mi (1,819.33 km) |
| Petrich to Ormesson-sur-Marne | 1,125.16 mi (1,810.77 km) |
| Petrich to Orsay | 1,138.34 mi (1,831.97 km) |
| Petrich to Orthez | 1,226.80 mi (1,974.34 km) |
