| Nafplio to Octeville | 1,469.30 mi (2,364.61 km) |
| Nafplio to Oignies | 1,320.20 mi (2,124.66 km) |
| Nafplio to Oissel | 1,351.03 mi (2,174.27 km) |
| Nafplio to Olivet | 1,270.93 mi (2,045.36 km) |
| Nafplio to Ollioules | 969.86 mi (1,560.84 km) |
| Nafplio to Olonne-sur-Mer | 1,396.87 mi (2,248.04 km) |
| Nafplio to Oloron-Sainte-Marie | 1,286.89 mi (2,071.05 km) |
| Nafplio to Onet Village | 1,150.13 mi (1,850.96 km) |
| Nafplio to Onnaing | 1,295.24 mi (2,084.49 km) |
| Nafplio to Orange | 1,041.10 mi (1,675.49 km) |
| Nafplio to Orchies | 1,311.40 mi (2,110.50 km) |
| Nafplio to Orleans | 1,271.77 mi (2,046.71 km) |
| Nafplio to Orly | 1,279.43 mi (2,059.04 km) |
| Nafplio to Ormesson-sur-Marne | 1,275.10 mi (2,052.08 km) |
| Nafplio to Orsay | 1,286.04 mi (2,069.68 km) |
