| West Des Moines to Olivares | 4,469.28 mi (7,192.61 km) |
| West Des Moines to Olivenza | 4,377.56 mi (7,045.00 km) |
| West Des Moines to Olot | 4,654.55 mi (7,490.77 km) |
| West Des Moines to Onate | 4,416.42 mi (7,107.54 km) |
| West Des Moines to Onda | 4,628.76 mi (7,449.27 km) |
| West Des Moines to Onteniente | 4,660.08 mi (7,499.67 km) |
| West Des Moines to Orihuela | 4,675.16 mi (7,523.95 km) |
| West Des Moines to Osuna | 4,524.03 mi (7,280.72 km) |
| West Des Moines to Ourense | 4,208.82 mi (6,773.44 km) |
| West Des Moines to Oviedo | 4,258.92 mi (6,854.06 km) |
| West Des Moines to Paiporta | 4,643.72 mi (7,473.35 km) |
| West Des Moines to Pajara | 4,445.81 mi (7,154.84 km) |
| West Des Moines to Palafolls | 4,686.42 mi (7,542.07 km) |
| West Des Moines to Palafrugell | 4,693.23 mi (7,553.03 km) |
| West Des Moines to Palamos | 4,694.78 mi (7,555.52 km) |
