| Royse City to Oskaloosa (Iowa) | 609.07 mi (980.20 km) |
| Royse City to Oswego (Illinois) | 743.66 mi (1,196.81 km) |
| Royse City to Oswego (New York) | 1,291.33 mi (2,078.20 km) |
| Royse City to Otsego (Minnesota) | 861.23 mi (1,386.01 km) |
| Royse City to Ottawa (Illinois) | 710.22 mi (1,142.98 km) |
| Royse City to Ottawa (Kansas) | 392.99 mi (632.46 km) |
| Royse City to Ottumwa (Iowa) | 595.75 mi (958.77 km) |
| Royse City to Overland (Missouri) | 516.69 mi (831.53 km) |
| Royse City to Overland Park (Kansas) | 418.44 mi (673.41 km) |
| Royse City to Overlea (Maryland) | 1,186.13 mi (1,908.90 km) |
| Royse City to Oviedo (Florida) | 945.01 mi (1,520.84 km) |
| Royse City to Owasso (Oklahoma) | 230.47 mi (370.91 km) |
| Royse City to Owatonna (Minnesota) | 785.72 mi (1,264.49 km) |
| Royse City to Owensboro (Kentucky) | 614.21 mi (988.48 km) |
| Royse City to Owings Mills (Maryland) | 1,172.97 mi (1,887.72 km) |
