| Des Moines to Oerlinghausen | 4,482.19 mi (7,213.40 km) |
| Des Moines to Oestrich-Winkel | 4,539.31 mi (7,305.32 km) |
| Des Moines to Offenburg | 4,600.27 mi (7,403.41 km) |
| Des Moines to Oftersheim | 4,586.28 mi (7,380.91 km) |
| Des Moines to Ohrdruf | 4,600.66 mi (7,404.05 km) |
| Des Moines to Ohringen | 4,626.22 mi (7,445.19 km) |
| Des Moines to Olbernhau | 4,696.41 mi (7,558.15 km) |
| Des Moines to Olching | 4,734.06 mi (7,618.73 km) |
| Des Moines to Oldenburg | 4,419.20 mi (7,112.02 km) |
| Des Moines to Oldenburg in Holstein | 4,460.46 mi (7,178.41 km) |
| Des Moines to Olfen | 4,447.87 mi (7,158.16 km) |
| Des Moines to Olpe | 4,491.87 mi (7,228.97 km) |
| Des Moines to Olsberg | 4,501.03 mi (7,243.70 km) |
| Des Moines to Oranienburg | 4,602.23 mi (7,406.58 km) |
| Des Moines to Ortenberg | 4,562.03 mi (7,341.88 km) |
