| Donaueschingen to Octeville | 475.71 mi (765.59 km) |
| Donaueschingen to Oignies | 303.30 mi (488.12 km) |
| Donaueschingen to Oissel | 351.52 mi (565.72 km) |
| Donaueschingen to Olivet | 305.77 mi (492.09 km) |
| Donaueschingen to Ollioules | 356.51 mi (573.75 km) |
| Donaueschingen to Olonne-sur-Mer | 491.45 mi (790.91 km) |
| Donaueschingen to Oloron-Sainte-Marie | 549.16 mi (883.79 km) |
| Donaueschingen to Onet Village | 375.88 mi (604.91 km) |
| Donaueschingen to Onnaing | 278.11 mi (447.57 km) |
| Donaueschingen to Orange | 317.48 mi (510.94 km) |
| Donaueschingen to Orchies | 294.33 mi (473.67 km) |
| Donaueschingen to Orleans | 305.22 mi (491.21 km) |
| Donaueschingen to Orly | 285.78 mi (459.91 km) |
| Donaueschingen to Ormesson-sur-Marne | 279.70 mi (450.13 km) |
| Donaueschingen to Orsay | 294.59 mi (474.09 km) |
