| Arcos de Valdevez to Oakley (California) | 5,507.23 mi (8,863.03 km) |
| Arcos de Valdevez to Oakton (Virginia) | 3,531.82 mi (5,683.91 km) |
| Arcos de Valdevez to Oakville (Missouri) | 4,159.19 mi (6,693.57 km) |
| Arcos de Valdevez to Oatfield (Oregon) | 5,173.18 mi (8,325.44 km) |
| Arcos de Valdevez to Ocala (Florida) | 4,111.49 mi (6,616.81 km) |
| Arcos de Valdevez to Ocean Acres (New Jersey) | 3,360.79 mi (5,408.66 km) |
| Arcos de Valdevez to Ocean City (New Jersey) | 3,390.31 mi (5,456.18 km) |
| Arcos de Valdevez to Ocean Pines (Maryland) | 3,443.51 mi (5,541.80 km) |
| Arcos de Valdevez to Ocean Pointe (Hawaii) | 7,659.85 mi (12,327.34 km) |
| Arcos de Valdevez to Ocean Springs (Mississippi) | 4,391.92 mi (7,068.11 km) |
| Arcos de Valdevez to Oceanside (California) | 5,567.01 mi (8,959.24 km) |
| Arcos de Valdevez to Oceanside (New York) | 3,304.27 mi (5,317.72 km) |
| Arcos de Valdevez to Ocoee (Florida) | 4,103.62 mi (6,604.14 km) |
| Arcos de Valdevez to Oconomowoc (Wisconsin) | 3,914.96 mi (6,300.51 km) |
| Arcos de Valdevez to Odenton (Maryland) | 3,497.14 mi (5,628.10 km) |
