| Ferreira do Zezere to Oerlinghausen | 1,171.81 mi (1,885.84 km) |
| Ferreira do Zezere to Oestrich-Winkel | 1,065.61 mi (1,714.93 km) |
| Ferreira do Zezere to Offenburg | 1,004.66 mi (1,616.84 km) |
| Ferreira do Zezere to Oftersheim | 1,062.77 mi (1,710.37 km) |
| Ferreira do Zezere to Ohrdruf | 1,197.27 mi (1,926.83 km) |
| Ferreira do Zezere to Ohringen | 1,091.79 mi (1,757.07 km) |
| Ferreira do Zezere to Olbernhau | 1,289.99 mi (2,076.04 km) |
| Ferreira do Zezere to Olching | 1,134.01 mi (1,825.02 km) |
| Ferreira do Zezere to Oldenburg | 1,211.62 mi (1,949.92 km) |
| Ferreira do Zezere to Oldenburg in Holstein | 1,346.13 mi (2,166.38 km) |
| Ferreira do Zezere to Olfen | 1,119.04 mi (1,800.92 km) |
| Ferreira do Zezere to Olpe | 1,102.46 mi (1,774.23 km) |
| Ferreira do Zezere to Olsberg | 1,138.82 mi (1,832.76 km) |
| Ferreira do Zezere to Oranienburg | 1,359.38 mi (2,187.71 km) |
| Ferreira do Zezere to Ortenberg | 1,117.94 mi (1,799.15 km) |
