| Simpelveld to Oswego (Illinois) | 4,236.16 mi (6,817.45 km) |
| Simpelveld to Oswego (New York) | 3,704.53 mi (5,961.87 km) |
| Simpelveld to Otsego (Minnesota) | 4,251.71 mi (6,842.46 km) |
| Simpelveld to Ottawa (Illinois) | 4,270.09 mi (6,872.04 km) |
| Simpelveld to Ottawa (Kansas) | 4,643.45 mi (7,472.91 km) |
| Simpelveld to Ottumwa (Iowa) | 4,418.22 mi (7,110.44 km) |
| Simpelveld to Overland (Missouri) | 4,457.95 mi (7,174.38 km) |
| Simpelveld to Overland Park (Kansas) | 4,607.84 mi (7,415.60 km) |
| Simpelveld to Overlea (Maryland) | 3,886.99 mi (6,255.50 km) |
| Simpelveld to Oviedo (Florida) | 4,592.83 mi (7,391.45 km) |
| Simpelveld to Owasso (Oklahoma) | 4,783.28 mi (7,697.94 km) |
| Simpelveld to Owatonna (Minnesota) | 4,295.64 mi (6,913.17 km) |
| Simpelveld to Owensboro (Kentucky) | 4,380.64 mi (7,049.95 km) |
| Simpelveld to Owings Mills (Maryland) | 3,895.84 mi (6,269.75 km) |
| Simpelveld to Owosso (Michigan) | 4,019.01 mi (6,467.97 km) |
