| Hiddenhausen to Oria | 912.06 mi (1,467.82 km) |
| Hiddenhausen to Oristano | 847.15 mi (1,363.35 km) |
| Hiddenhausen to Orta Nova | 819.63 mi (1,319.07 km) |
| Hiddenhausen to Orte | 693.25 mi (1,115.69 km) |
| Hiddenhausen to Ortona | 729.90 mi (1,174.65 km) |
| Hiddenhausen to Orvieto | 672.72 mi (1,082.63 km) |
| Hiddenhausen to Orzinuovi | 471.34 mi (758.55 km) |
| Hiddenhausen to Osimo | 640.67 mi (1,031.05 km) |
| Hiddenhausen to Ospitaletto | 461.55 mi (742.79 km) |
| Hiddenhausen to Ostuni | 896.35 mi (1,442.53 km) |
| Hiddenhausen to Ottaviano | 829.41 mi (1,334.81 km) |
| Hiddenhausen to Ovada | 520.10 mi (837.02 km) |
| Hiddenhausen to Ozieri | 800.43 mi (1,288.17 km) |
| Hiddenhausen to Paceco | 998.21 mi (1,606.46 km) |
| Hiddenhausen to Pachino | 1,113.26 mi (1,791.62 km) |
