| Mulheim-Karlich to Octeville | 408.92 mi (658.09 km) |
| Mulheim-Karlich to Oignies | 198.20 mi (318.97 km) |
| Mulheim-Karlich to Oissel | 294.11 mi (473.32 km) |
| Mulheim-Karlich to Olivet | 307.08 mi (494.20 km) |
| Mulheim-Karlich to Ollioules | 506.76 mi (815.55 km) |
| Mulheim-Karlich to Olonne-sur-Mer | 500.56 mi (805.58 km) |
| Mulheim-Karlich to Oloron-Sainte-Marie | 626.81 mi (1,008.76 km) |
| Mulheim-Karlich to Onet Village | 474.81 mi (764.13 km) |
| Mulheim-Karlich to Onnaing | 171.67 mi (276.27 km) |
| Mulheim-Karlich to Orange | 449.65 mi (723.63 km) |
| Mulheim-Karlich to Orchies | 187.18 mi (301.23 km) |
| Mulheim-Karlich to Orleans | 305.18 mi (491.14 km) |
| Mulheim-Karlich to Orly | 255.21 mi (410.72 km) |
| Mulheim-Karlich to Ormesson-sur-Marne | 248.00 mi (399.12 km) |
| Mulheim-Karlich to Orsay | 264.95 mi (426.40 km) |
