| Tonypandy to Oswego (Illinois) | 3,852.66 mi (6,200.25 km) |
| Tonypandy to Oswego (New York) | 3,308.93 mi (5,325.20 km) |
| Tonypandy to Otsego (Minnesota) | 3,886.33 mi (6,254.45 km) |
| Tonypandy to Ottawa (Illinois) | 3,886.61 mi (6,254.90 km) |
| Tonypandy to Ottawa (Kansas) | 4,264.66 mi (6,863.31 km) |
| Tonypandy to Ottumwa (Iowa) | 4,039.86 mi (6,501.53 km) |
| Tonypandy to Overland (Missouri) | 4,071.29 mi (6,552.10 km) |
| Tonypandy to Overland Park (Kansas) | 4,228.66 mi (6,805.36 km) |
| Tonypandy to Overlea (Maryland) | 3,484.41 mi (5,607.61 km) |
| Tonypandy to Oviedo (Florida) | 4,183.52 mi (6,732.72 km) |
| Tonypandy to Owasso (Oklahoma) | 4,400.74 mi (7,082.31 km) |
| Tonypandy to Owatonna (Minnesota) | 3,926.33 mi (6,318.82 km) |
| Tonypandy to Owensboro (Kentucky) | 3,987.53 mi (6,417.31 km) |
| Tonypandy to Owings Mills (Maryland) | 3,493.59 mi (5,622.39 km) |
| Tonypandy to Owosso (Michigan) | 3,632.26 mi (5,845.56 km) |
