| Ano Syros to Octeville | 1,560.60 mi (2,511.54 km) |
| Ano Syros to Oignies | 1,403.50 mi (2,258.72 km) |
| Ano Syros to Oissel | 1,440.55 mi (2,318.34 km) |
| Ano Syros to Olivet | 1,364.43 mi (2,195.84 km) |
| Ano Syros to Ollioules | 1,075.27 mi (1,730.47 km) |
| Ano Syros to Olonne-sur-Mer | 1,497.13 mi (2,409.40 km) |
| Ano Syros to Oloron-Sainte-Marie | 1,394.82 mi (2,244.74 km) |
| Ano Syros to Onet Village | 1,253.92 mi (2,017.99 km) |
| Ano Syros to Onnaing | 1,377.94 mi (2,217.57 km) |
| Ano Syros to Orange | 1,144.11 mi (1,841.27 km) |
| Ano Syros to Orchies | 1,394.32 mi (2,243.95 km) |
| Ano Syros to Orleans | 1,365.13 mi (2,196.97 km) |
| Ano Syros to Orly | 1,369.45 mi (2,203.92 km) |
| Ano Syros to Ormesson-sur-Marne | 1,364.81 mi (2,196.45 km) |
| Ano Syros to Orsay | 1,376.46 mi (2,215.20 km) |
