| Tolmezzo to Octeville | 711.95 mi (1,145.77 km) |
| Tolmezzo to Oignies | 537.99 mi (865.82 km) |
| Tolmezzo to Oissel | 588.12 mi (946.49 km) |
| Tolmezzo to Olivet | 531.72 mi (855.72 km) |
| Tolmezzo to Ollioules | 417.41 mi (671.76 km) |
| Tolmezzo to Olonne-sur-Mer | 702.84 mi (1,131.12 km) |
| Tolmezzo to Oloron-Sainte-Marie | 702.64 mi (1,130.79 km) |
| Tolmezzo to Onet Village | 524.54 mi (844.17 km) |
| Tolmezzo to Onnaing | 511.90 mi (823.82 km) |
| Tolmezzo to Orange | 428.32 mi (689.32 km) |
| Tolmezzo to Orchies | 528.44 mi (850.45 km) |
| Tolmezzo to Orleans | 531.65 mi (855.62 km) |
| Tolmezzo to Orly | 520.52 mi (837.69 km) |
| Tolmezzo to Ormesson-sur-Marne | 514.82 mi (828.53 km) |
| Tolmezzo to Orsay | 528.86 mi (851.11 km) |
