| Cantanhede to Oswego (Illinois) | 3,998.23 mi (6,434.53 km) |
| Cantanhede to Oswego (New York) | 3,399.77 mi (5,471.39 km) |
| Cantanhede to Otsego (Minnesota) | 4,116.22 mi (6,624.41 km) |
| Cantanhede to Ottawa (Illinois) | 4,031.18 mi (6,487.55 km) |
| Cantanhede to Ottawa (Kansas) | 4,421.39 mi (7,115.54 km) |
| Cantanhede to Ottumwa (Iowa) | 4,205.86 mi (6,768.67 km) |
| Cantanhede to Overland (Missouri) | 4,191.82 mi (6,746.09 km) |
| Cantanhede to Overland Park (Kansas) | 4,384.52 mi (7,056.20 km) |
| Cantanhede to Overlea (Maryland) | 3,509.69 mi (5,648.31 km) |
| Cantanhede to Oviedo (Florida) | 4,097.19 mi (6,593.79 km) |
| Cantanhede to Owasso (Oklahoma) | 4,533.95 mi (7,296.69 km) |
| Cantanhede to Owatonna (Minnesota) | 4,138.15 mi (6,659.72 km) |
| Cantanhede to Owensboro (Kentucky) | 4,070.62 mi (6,551.03 km) |
| Cantanhede to Owings Mills (Maryland) | 3,521.67 mi (5,667.58 km) |
| Cantanhede to Owosso (Michigan) | 3,767.58 mi (6,063.34 km) |
