| Portchester to Oakley (California) | 5,323.33 mi (8,567.08 km) |
| Portchester to Oakton (Virginia) | 3,650.10 mi (5,874.26 km) |
| Portchester to Oakville (Missouri) | 4,195.44 mi (6,751.91 km) |
| Portchester to Oatfield (Oregon) | 4,925.63 mi (7,927.04 km) |
| Portchester to Ocala (Florida) | 4,308.36 mi (6,933.63 km) |
| Portchester to Ocean Acres (New Jersey) | 3,487.51 mi (5,612.60 km) |
| Portchester to Ocean City (New Jersey) | 3,521.37 mi (5,667.10 km) |
| Portchester to Ocean Pines (Maryland) | 3,582.70 mi (5,765.80 km) |
| Portchester to Ocean Pointe (Hawaii) | 7,256.72 mi (11,678.56 km) |
| Portchester to Ocean Springs (Mississippi) | 4,525.77 mi (7,283.53 km) |
| Portchester to Oceanside (California) | 5,454.61 mi (8,778.34 km) |
| Portchester to Oceanside (New York) | 3,422.85 mi (5,508.54 km) |
| Portchester to Ocoee (Florida) | 4,311.45 mi (6,938.61 km) |
| Portchester to Oconomowoc (Wisconsin) | 3,908.55 mi (6,290.20 km) |
| Portchester to Odenton (Maryland) | 3,617.12 mi (5,821.19 km) |
