| Monserrato to Oerlinghausen | 878.94 mi (1,414.52 km) |
| Monserrato to Oestrich-Winkel | 744.88 mi (1,198.77 km) |
| Monserrato to Offenburg | 639.67 mi (1,029.44 km) |
| Monserrato to Oftersheim | 699.82 mi (1,126.25 km) |
| Monserrato to Ohrdruf | 803.64 mi (1,293.34 km) |
| Monserrato to Ohringen | 687.69 mi (1,106.74 km) |
| Monserrato to Olbernhau | 814.56 mi (1,310.90 km) |
| Monserrato to Olching | 627.71 mi (1,010.19 km) |
| Monserrato to Oldenburg | 961.00 mi (1,546.58 km) |
| Monserrato to Oldenburg in Holstein | 1,043.00 mi (1,678.55 km) |
| Monserrato to Olfen | 865.54 mi (1,392.95 km) |
| Monserrato to Olpe | 815.49 mi (1,312.41 km) |
| Monserrato to Olsberg | 836.65 mi (1,346.45 km) |
| Monserrato to Oranienburg | 953.06 mi (1,533.80 km) |
| Monserrato to Ortenberg | 767.35 mi (1,234.93 km) |
