| Neckargemund to Octeville | 468.30 mi (753.65 km) |
| Neckargemund to Oignies | 268.53 mi (432.16 km) |
| Neckargemund to Oissel | 346.59 mi (557.79 km) |
| Neckargemund to Olivet | 332.08 mi (534.43 km) |
| Neckargemund to Ollioules | 454.45 mi (731.37 km) |
| Neckargemund to Olonne-sur-Mer | 526.81 mi (847.81 km) |
| Neckargemund to Oloron-Sainte-Marie | 619.66 mi (997.24 km) |
| Neckargemund to Onet Village | 454.16 mi (730.90 km) |
| Neckargemund to Onnaing | 241.36 mi (388.42 km) |
| Neckargemund to Orange | 409.10 mi (658.38 km) |
| Neckargemund to Orchies | 257.94 mi (415.12 km) |
| Neckargemund to Orleans | 330.76 mi (532.31 km) |
| Neckargemund to Orly | 293.28 mi (471.99 km) |
| Neckargemund to Ormesson-sur-Marne | 286.23 mi (460.64 km) |
| Neckargemund to Orsay | 303.08 mi (487.76 km) |
