| Covasna to Octeville | 1,311.22 mi (2,110.21 km) |
| Covasna to Oignies | 1,110.32 mi (1,786.89 km) |
| Covasna to Oissel | 1,188.02 mi (1,911.93 km) |
| Covasna to Olivet | 1,150.98 mi (1,852.33 km) |
| Covasna to Ollioules | 1,016.81 mi (1,636.40 km) |
| Covasna to Olonne-sur-Mer | 1,331.04 mi (2,142.10 km) |
| Covasna to Oloron-Sainte-Marie | 1,326.16 mi (2,134.24 km) |
| Covasna to Onet Village | 1,150.78 mi (1,852.00 km) |
| Covasna to Onnaing | 1,083.19 mi (1,743.23 km) |
| Covasna to Orange | 1,047.93 mi (1,686.49 km) |
| Covasna to Orchies | 1,099.46 mi (1,769.40 km) |
| Covasna to Orleans | 1,150.50 mi (1,851.55 km) |
| Covasna to Orly | 1,127.88 mi (1,815.15 km) |
| Covasna to Ormesson-sur-Marne | 1,121.33 mi (1,804.60 km) |
| Covasna to Orsay | 1,137.18 mi (1,830.12 km) |
