| Gennep to Oswego (Illinois) | 4,204.09 mi (6,765.83 km) |
| Gennep to Oswego (New York) | 3,677.33 mi (5,918.09 km) |
| Gennep to Otsego (Minnesota) | 4,214.54 mi (6,782.64 km) |
| Gennep to Ottawa (Illinois) | 4,237.99 mi (6,820.38 km) |
| Gennep to Ottawa (Kansas) | 4,609.72 mi (7,418.62 km) |
| Gennep to Ottumwa (Iowa) | 4,384.45 mi (7,056.10 km) |
| Gennep to Overland (Missouri) | 4,426.86 mi (7,124.35 km) |
| Gennep to Overland Park (Kansas) | 4,574.24 mi (7,361.53 km) |
| Gennep to Overlea (Maryland) | 3,863.37 mi (6,217.50 km) |
| Gennep to Oviedo (Florida) | 4,574.75 mi (7,362.34 km) |
| Gennep to Owasso (Oklahoma) | 4,750.66 mi (7,645.45 km) |
| Gennep to Owatonna (Minnesota) | 4,259.43 mi (6,854.89 km) |
| Gennep to Owensboro (Kentucky) | 4,352.06 mi (7,003.97 km) |
| Gennep to Owings Mills (Maryland) | 3,872.02 mi (6,231.42 km) |
| Gennep to Owosso (Michigan) | 3,988.14 mi (6,418.29 km) |
