| Trikala to Octeville | 1,337.57 mi (2,152.61 km) |
| Trikala to Oignies | 1,181.59 mi (1,901.58 km) |
| Trikala to Oissel | 1,217.54 mi (1,959.44 km) |
| Trikala to Olivet | 1,141.63 mi (1,837.28 km) |
| Trikala to Ollioules | 860.68 mi (1,385.13 km) |
| Trikala to Olonne-sur-Mer | 1,276.81 mi (2,054.83 km) |
| Trikala to Oloron-Sainte-Marie | 1,183.26 mi (1,904.27 km) |
| Trikala to Onet Village | 1,036.89 mi (1,668.72 km) |
| Trikala to Onnaing | 1,156.20 mi (1,860.72 km) |
| Trikala to Orange | 926.51 mi (1,491.08 km) |
| Trikala to Orchies | 1,172.52 mi (1,886.99 km) |
| Trikala to Orleans | 1,142.31 mi (1,838.37 km) |
| Trikala to Orly | 1,146.42 mi (1,844.98 km) |
| Trikala to Ormesson-sur-Marne | 1,141.79 mi (1,837.53 km) |
| Trikala to Orsay | 1,153.42 mi (1,856.25 km) |
