| Porto de Mos to Oerlinghausen | 1,193.84 mi (1,921.30 km) |
| Porto de Mos to Oestrich-Winkel | 1,089.10 mi (1,752.73 km) |
| Porto de Mos to Offenburg | 1,029.49 mi (1,656.80 km) |
| Porto de Mos to Oftersheim | 1,087.04 mi (1,749.43 km) |
| Porto de Mos to Ohrdruf | 1,221.05 mi (1,965.09 km) |
| Porto de Mos to Ohringen | 1,116.51 mi (1,796.86 km) |
| Porto de Mos to Olbernhau | 1,314.62 mi (2,115.68 km) |
| Porto de Mos to Olching | 1,159.98 mi (1,866.81 km) |
| Porto de Mos to Oldenburg | 1,232.44 mi (1,983.42 km) |
| Porto de Mos to Oldenburg in Holstein | 1,367.15 mi (2,200.22 km) |
| Porto de Mos to Olfen | 1,140.70 mi (1,835.78 km) |
| Porto de Mos to Olpe | 1,124.96 mi (1,810.44 km) |
| Porto de Mos to Olsberg | 1,161.32 mi (1,868.96 km) |
| Porto de Mos to Oranienburg | 1,382.42 mi (2,224.79 km) |
| Porto de Mos to Ortenberg | 1,141.53 mi (1,837.11 km) |
