| Rorschach to Oswego (Illinois) | 4,497.28 mi (7,237.67 km) |
| Rorschach to Oswego (New York) | 3,955.40 mi (6,365.60 km) |
| Rorschach to Otsego (Minnesota) | 4,522.24 mi (7,277.84 km) |
| Rorschach to Ottawa (Illinois) | 4,531.23 mi (7,292.31 km) |
| Rorschach to Ottawa (Kansas) | 4,907.63 mi (7,898.07 km) |
| Rorschach to Ottumwa (Iowa) | 4,682.59 mi (7,535.90 km) |
| Rorschach to Overland (Missouri) | 4,716.85 mi (7,591.04 km) |
| Rorschach to Overland Park (Kansas) | 4,871.78 mi (7,840.37 km) |
| Rorschach to Overlea (Maryland) | 4,128.82 mi (6,644.69 km) |
| Rorschach to Oviedo (Florida) | 4,818.57 mi (7,754.73 km) |
| Rorschach to Owasso (Oklahoma) | 5,045.15 mi (8,119.39 km) |
| Rorschach to Owatonna (Minnesota) | 4,564.54 mi (7,345.92 km) |
| Rorschach to Owensboro (Kentucky) | 4,634.03 mi (7,457.75 km) |
| Rorschach to Owings Mills (Maryland) | 4,138.18 mi (6,659.76 km) |
| Rorschach to Owosso (Michigan) | 4,277.78 mi (6,884.42 km) |
