| Creve Coeur to Oswego (Illinois) | 236.50 mi (380.60 km) |
| Creve Coeur to Oswego (New York) | 796.90 mi (1,282.49 km) |
| Creve Coeur to Otsego (Minnesota) | 484.50 mi (779.73 km) |
| Creve Coeur to Ottawa (Illinois) | 204.82 mi (329.63 km) |
| Creve Coeur to Ottawa (Kansas) | 260.20 mi (418.74 km) |
| Creve Coeur to Ottumwa (Iowa) | 193.68 mi (311.70 km) |
| Creve Coeur to Overland (Missouri) | 4.66 mi (7.50 km) |
| Creve Coeur to Overland Park (Kansas) | 229.12 mi (368.73 km) |
| Creve Coeur to Overlea (Maryland) | 748.43 mi (1,204.48 km) |
| Creve Coeur to Oviedo (Florida) | 871.34 mi (1,402.29 km) |
| Creve Coeur to Owasso (Oklahoma) | 337.85 mi (543.72 km) |
| Creve Coeur to Owatonna (Minnesota) | 401.94 mi (646.87 km) |
| Creve Coeur to Owensboro (Kentucky) | 191.05 mi (307.47 km) |
| Creve Coeur to Owings Mills (Maryland) | 733.78 mi (1,180.90 km) |
| Creve Coeur to Owosso (Michigan) | 443.61 mi (713.92 km) |
