| West Des Moines to Oerlinghausen | 4,489.09 mi (7,224.49 km) |
| West Des Moines to Oestrich-Winkel | 4,546.40 mi (7,316.73 km) |
| West Des Moines to Offenburg | 4,607.48 mi (7,415.03 km) |
| West Des Moines to Oftersheim | 4,593.40 mi (7,392.36 km) |
| West Des Moines to Ohrdruf | 4,607.57 mi (7,415.17 km) |
| West Des Moines to Ohringen | 4,633.32 mi (7,456.61 km) |
| West Des Moines to Olbernhau | 4,703.23 mi (7,569.11 km) |
| West Des Moines to Olching | 4,741.16 mi (7,630.16 km) |
| West Des Moines to Oldenburg | 4,426.01 mi (7,122.98 km) |
| West Des Moines to Oldenburg in Holstein | 4,467.06 mi (7,189.03 km) |
| West Des Moines to Olfen | 4,454.84 mi (7,169.37 km) |
| West Des Moines to Olpe | 4,498.89 mi (7,240.26 km) |
| West Des Moines to Olsberg | 4,507.98 mi (7,254.90 km) |
| West Des Moines to Oranienburg | 4,608.87 mi (7,417.27 km) |
| West Des Moines to Ortenberg | 4,569.05 mi (7,353.18 km) |
