| Monzon to Oerlinghausen | 800.47 mi (1,288.23 km) |
| Monzon to Oestrich-Winkel | 672.37 mi (1,082.08 km) |
| Monzon to Offenburg | 588.79 mi (947.56 km) |
| Monzon to Oftersheim | 655.02 mi (1,054.16 km) |
| Monzon to Ohrdruf | 793.56 mi (1,277.12 km) |
| Monzon to Ohringen | 674.71 mi (1,085.84 km) |
| Monzon to Olbernhau | 869.29 mi (1,398.99 km) |
| Monzon to Olching | 694.38 mi (1,117.50 km) |
| Monzon to Oldenburg | 860.48 mi (1,384.80 km) |
| Monzon to Oldenburg in Holstein | 985.58 mi (1,586.14 km) |
| Monzon to Olfen | 757.28 mi (1,218.73 km) |
| Monzon to Olpe | 725.90 mi (1,168.22 km) |
| Monzon to Olsberg | 760.64 mi (1,224.14 km) |
| Monzon to Oranienburg | 963.72 mi (1,550.95 km) |
| Monzon to Ortenberg | 720.51 mi (1,159.55 km) |
