| Des Moines to Olivares | 4,460.88 mi (7,179.10 km) |
| Des Moines to Olivenza | 4,369.20 mi (7,031.54 km) |
| Des Moines to Olot | 4,646.68 mi (7,478.11 km) |
| Des Moines to Onate | 4,408.44 mi (7,094.70 km) |
| Des Moines to Onda | 4,620.66 mi (7,436.24 km) |
| Des Moines to Onteniente | 4,651.91 mi (7,486.52 km) |
| Des Moines to Orihuela | 4,666.94 mi (7,510.72 km) |
| Des Moines to Osuna | 4,515.65 mi (7,267.23 km) |
| Des Moines to Ourense | 4,200.64 mi (6,760.28 km) |
| Des Moines to Oviedo | 4,250.86 mi (6,841.09 km) |
| Des Moines to Paiporta | 4,635.59 mi (7,460.26 km) |
| Des Moines to Pajara | 4,436.97 mi (7,140.61 km) |
| Des Moines to Palafolls | 4,678.53 mi (7,529.37 km) |
| Des Moines to Palafrugell | 4,685.37 mi (7,540.37 km) |
| Des Moines to Palamos | 4,686.91 mi (7,542.86 km) |
