| Port Talbot to Oswego (Illinois) | 3,840.18 mi (6,180.18 km) |
| Port Talbot to Oswego (New York) | 3,295.73 mi (5,303.97 km) |
| Port Talbot to Otsego (Minnesota) | 3,874.86 mi (6,235.99 km) |
| Port Talbot to Ottawa (Illinois) | 3,874.14 mi (6,234.82 km) |
| Port Talbot to Ottawa (Kansas) | 4,252.43 mi (6,843.63 km) |
| Port Talbot to Ottumwa (Iowa) | 4,027.67 mi (6,481.91 km) |
| Port Talbot to Overland (Missouri) | 4,058.62 mi (6,531.71 km) |
| Port Talbot to Overland Park (Kansas) | 4,216.41 mi (6,785.65 km) |
| Port Talbot to Overlea (Maryland) | 3,470.71 mi (5,585.57 km) |
| Port Talbot to Oviedo (Florida) | 4,169.21 mi (6,709.69 km) |
| Port Talbot to Owasso (Oklahoma) | 4,388.29 mi (7,062.28 km) |
| Port Talbot to Owatonna (Minnesota) | 3,914.65 mi (6,300.02 km) |
| Port Talbot to Owensboro (Kentucky) | 3,974.47 mi (6,396.29 km) |
| Port Talbot to Owings Mills (Maryland) | 3,479.92 mi (5,600.38 km) |
| Port Talbot to Owosso (Michigan) | 3,619.61 mi (5,825.20 km) |
