| Troina to Octeville | 1,147.59 mi (1,846.87 km) |
| Troina to Oignies | 1,045.89 mi (1,683.19 km) |
| Troina to Oissel | 1,043.28 mi (1,679.00 km) |
| Troina to Olivet | 945.87 mi (1,522.23 km) |
| Troina to Ollioules | 589.93 mi (949.40 km) |
| Troina to Olonne-sur-Mer | 1,030.55 mi (1,658.51 km) |
| Troina to Oloron-Sainte-Marie | 880.45 mi (1,416.95 km) |
| Troina to Onet Village | 771.94 mi (1,242.32 km) |
| Troina to Onnaing | 1,025.45 mi (1,650.30 km) |
| Troina to Orange | 672.75 mi (1,082.69 km) |
| Troina to Orchies | 1,039.53 mi (1,672.96 km) |
| Troina to Orleans | 947.40 mi (1,524.69 km) |
| Troina to Orly | 972.55 mi (1,565.17 km) |
| Troina to Ormesson-sur-Marne | 970.13 mi (1,561.28 km) |
| Troina to Orsay | 976.74 mi (1,571.91 km) |
