| Piraziz to Octeville | 1,998.59 mi (3,216.42 km) |
| Piraziz to Oignies | 1,798.66 mi (2,894.66 km) |
| Piraziz to Oissel | 1,874.99 mi (3,017.51 km) |
| Piraziz to Olivet | 1,833.21 mi (2,950.27 km) |
| Piraziz to Ollioules | 1,653.54 mi (2,661.12 km) |
| Piraziz to Olonne-sur-Mer | 2,007.25 mi (3,230.35 km) |
| Piraziz to Oloron-Sainte-Marie | 1,975.52 mi (3,179.30 km) |
| Piraziz to Onet Village | 1,807.22 mi (2,908.43 km) |
| Piraziz to Onnaing | 1,771.52 mi (2,850.99 km) |
| Piraziz to Orange | 1,699.16 mi (2,734.53 km) |
| Piraziz to Orchies | 1,787.79 mi (2,877.17 km) |
| Piraziz to Orleans | 1,832.90 mi (2,949.77 km) |
| Piraziz to Orly | 1,813.44 mi (2,918.46 km) |
| Piraziz to Ormesson-sur-Marne | 1,807.03 mi (2,908.13 km) |
| Piraziz to Orsay | 1,822.58 mi (2,933.17 km) |
