| Arruda dos Vinhos to Oerlinghausen | 1,235.69 mi (1,988.65 km) |
| Arruda dos Vinhos to Oestrich-Winkel | 1,129.56 mi (1,817.85 km) |
| Arruda dos Vinhos to Offenburg | 1,068.25 mi (1,719.18 km) |
| Arruda dos Vinhos to Oftersheim | 1,126.57 mi (1,813.04 km) |
| Arruda dos Vinhos to Ohrdruf | 1,261.18 mi (2,029.67 km) |
| Arruda dos Vinhos to Ohringen | 1,155.43 mi (1,859.48 km) |
| Arruda dos Vinhos to Olbernhau | 1,353.66 mi (2,178.50 km) |
| Arruda dos Vinhos to Olching | 1,196.83 mi (1,926.11 km) |
| Arruda dos Vinhos to Oldenburg | 1,275.17 mi (2,052.19 km) |
| Arruda dos Vinhos to Oldenburg in Holstein | 1,409.75 mi (2,268.78 km) |
| Arruda dos Vinhos to Olfen | 1,182.84 mi (1,903.59 km) |
| Arruda dos Vinhos to Olpe | 1,166.40 mi (1,877.13 km) |
| Arruda dos Vinhos to Olsberg | 1,202.77 mi (1,935.66 km) |
| Arruda dos Vinhos to Oranienburg | 1,423.35 mi (2,290.66 km) |
| Arruda dos Vinhos to Ortenberg | 1,181.87 mi (1,902.04 km) |
