| Gross-Gerau to Octeville | 452.04 mi (727.48 km) |
| Gross-Gerau to Oignies | 245.79 mi (395.57 km) |
| Gross-Gerau to Oissel | 333.14 mi (536.14 km) |
| Gross-Gerau to Olivet | 330.96 mi (532.62 km) |
| Gross-Gerau to Ollioules | 484.85 mi (780.29 km) |
| Gross-Gerau to Olonne-sur-Mer | 526.23 mi (846.89 km) |
| Gross-Gerau to Oloron-Sainte-Marie | 633.52 mi (1,019.56 km) |
| Gross-Gerau to Onet Village | 472.85 mi (760.98 km) |
| Gross-Gerau to Onnaing | 218.71 mi (351.98 km) |
| Gross-Gerau to Orange | 435.18 mi (700.35 km) |
| Gross-Gerau to Orchies | 234.91 mi (378.04 km) |
| Gross-Gerau to Orleans | 329.37 mi (530.08 km) |
| Gross-Gerau to Orly | 285.98 mi (460.25 km) |
| Gross-Gerau to Ormesson-sur-Marne | 278.78 mi (448.65 km) |
| Gross-Gerau to Orsay | 295.86 mi (476.15 km) |
