| Denain to Oswego (Illinois) | 4,157.19 mi (6,690.35 km) |
| Denain to Oswego (New York) | 3,617.84 mi (5,822.35 km) |
| Denain to Otsego (Minnesota) | 4,182.43 mi (6,730.98 km) |
| Denain to Ottawa (Illinois) | 4,191.14 mi (6,744.99 km) |
| Denain to Ottawa (Kansas) | 4,567.26 mi (7,350.29 km) |
| Denain to Ottumwa (Iowa) | 4,342.21 mi (6,988.11 km) |
| Denain to Overland (Missouri) | 4,377.15 mi (7,044.35 km) |
| Denain to Overland Park (Kansas) | 4,531.42 mi (7,292.61 km) |
| Denain to Overlea (Maryland) | 3,795.00 mi (6,107.45 km) |
| Denain to Oviedo (Florida) | 4,493.62 mi (7,231.79 km) |
| Denain to Owasso (Oklahoma) | 4,704.99 mi (7,571.95 km) |
| Denain to Owatonna (Minnesota) | 4,224.40 mi (6,798.51 km) |
| Denain to Owensboro (Kentucky) | 4,295.74 mi (6,913.33 km) |
| Denain to Owings Mills (Maryland) | 3,804.12 mi (6,122.15 km) |
| Denain to Owosso (Michigan) | 3,938.07 mi (6,337.72 km) |
