| Monschau to Oswego (Illinois) | 4,256.31 mi (6,849.88 km) |
| Monschau to Oswego (New York) | 3,723.71 mi (5,992.74 km) |
| Monschau to Otsego (Minnesota) | 4,272.75 mi (6,876.33 km) |
| Monschau to Ottawa (Illinois) | 4,290.24 mi (6,904.48 km) |
| Monschau to Ottawa (Kansas) | 4,663.90 mi (7,505.82 km) |
| Monschau to Ottumwa (Iowa) | 4,438.68 mi (7,143.37 km) |
| Monschau to Overland (Missouri) | 4,477.90 mi (7,206.49 km) |
| Monschau to Overland Park (Kansas) | 4,628.26 mi (7,448.47 km) |
| Monschau to Overlea (Maryland) | 3,905.36 mi (6,285.07 km) |
| Monschau to Oviedo (Florida) | 4,609.84 mi (7,418.83 km) |
| Monschau to Owasso (Oklahoma) | 4,803.52 mi (7,730.51 km) |
| Monschau to Owatonna (Minnesota) | 4,316.53 mi (6,946.78 km) |
| Monschau to Owensboro (Kentucky) | 4,400.08 mi (7,081.25 km) |
| Monschau to Owings Mills (Maryland) | 3,914.26 mi (6,299.39 km) |
| Monschau to Owosso (Michigan) | 4,038.93 mi (6,500.04 km) |
