| Prairie Ridge to Olivares | 5,386.17 mi (8,668.20 km) |
| Prairie Ridge to Olivenza | 5,285.47 mi (8,506.14 km) |
| Prairie Ridge to Olot | 5,397.70 mi (8,686.75 km) |
| Prairie Ridge to Onate | 5,202.75 mi (8,373.02 km) |
| Prairie Ridge to Onda | 5,439.32 mi (8,753.75 km) |
| Prairie Ridge to Onteniente | 5,492.18 mi (8,838.81 km) |
| Prairie Ridge to Orihuela | 5,522.41 mi (8,887.46 km) |
| Prairie Ridge to Osuna | 5,431.95 mi (8,741.88 km) |
| Prairie Ridge to Ourense | 5,066.09 mi (8,153.09 km) |
| Prairie Ridge to Oviedo | 5,077.45 mi (8,171.37 km) |
| Prairie Ridge to Paiporta | 5,464.34 mi (8,794.01 km) |
| Prairie Ridge to Pajara | 5,571.35 mi (8,966.21 km) |
| Prairie Ridge to Palafolls | 5,434.48 mi (8,745.95 km) |
| Prairie Ridge to Palafrugell | 5,432.42 mi (8,742.64 km) |
| Prairie Ridge to Palamos | 5,435.50 mi (8,747.60 km) |
