| Geldern to Oswego (Illinois) | 4,223.99 mi (6,797.85 km) |
| Geldern to Oswego (New York) | 3,696.91 mi (5,949.61 km) |
| Geldern to Otsego (Minnesota) | 4,234.57 mi (6,814.89 km) |
| Geldern to Ottawa (Illinois) | 4,257.89 mi (6,852.41 km) |
| Geldern to Ottawa (Kansas) | 4,629.68 mi (7,450.76 km) |
| Geldern to Ottumwa (Iowa) | 4,404.42 mi (7,088.23 km) |
| Geldern to Overland (Missouri) | 4,446.71 mi (7,156.29 km) |
| Geldern to Overland Park (Kansas) | 4,594.20 mi (7,393.65 km) |
| Geldern to Overlea (Maryland) | 3,882.63 mi (6,248.50 km) |
| Geldern to Oviedo (Florida) | 4,593.38 mi (7,392.33 km) |
| Geldern to Owasso (Oklahoma) | 4,770.59 mi (7,677.52 km) |
| Geldern to Owatonna (Minnesota) | 4,279.46 mi (6,887.12 km) |
| Geldern to Owensboro (Kentucky) | 4,371.76 mi (7,035.66 km) |
| Geldern to Owings Mills (Maryland) | 3,891.31 mi (6,262.45 km) |
| Geldern to Owosso (Michigan) | 4,007.97 mi (6,450.21 km) |
