| Mulheim-Karlich to Oria | 839.88 mi (1,351.66 km) |
| Mulheim-Karlich to Oristano | 726.12 mi (1,168.58 km) |
| Mulheim-Karlich to Orta Nova | 739.13 mi (1,189.52 km) |
| Mulheim-Karlich to Orte | 594.82 mi (957.28 km) |
| Mulheim-Karlich to Ortona | 644.89 mi (1,037.85 km) |
| Mulheim-Karlich to Orvieto | 573.15 mi (922.39 km) |
| Mulheim-Karlich to Orzinuovi | 362.55 mi (583.46 km) |
| Mulheim-Karlich to Osimo | 553.95 mi (891.50 km) |
| Mulheim-Karlich to Ospitaletto | 354.43 mi (570.41 km) |
| Mulheim-Karlich to Ostuni | 824.87 mi (1,327.50 km) |
| Mulheim-Karlich to Ottaviano | 739.52 mi (1,190.14 km) |
| Mulheim-Karlich to Ovada | 400.73 mi (644.91 km) |
| Mulheim-Karlich to Ozieri | 681.14 mi (1,096.19 km) |
| Mulheim-Karlich to Paceco | 892.31 mi (1,436.03 km) |
| Mulheim-Karlich to Pachino | 1,017.09 mi (1,636.85 km) |
