| The Dalles to Olivares | 5,425.10 mi (8,730.85 km) |
| The Dalles to Olivenza | 5,324.86 mi (8,569.54 km) |
| The Dalles to Olot | 5,452.00 mi (8,774.15 km) |
| The Dalles to Onate | 5,252.68 mi (8,453.37 km) |
| The Dalles to Onda | 5,488.13 mi (8,832.29 km) |
| The Dalles to Onteniente | 5,539.31 mi (8,914.65 km) |
| The Dalles to Orihuela | 5,568.31 mi (8,961.33 km) |
| The Dalles to Osuna | 5,471.91 mi (8,806.19 km) |
| The Dalles to Ourense | 5,109.27 mi (8,222.57 km) |
| The Dalles to Oviedo | 5,124.10 mi (8,246.44 km) |
| The Dalles to Paiporta | 5,512.37 mi (8,871.31 km) |
| The Dalles to Pajara | 5,588.47 mi (8,993.77 km) |
| The Dalles to Palafolls | 5,488.53 mi (8,832.94 km) |
| The Dalles to Palafrugell | 5,487.19 mi (8,830.78 km) |
| The Dalles to Palamos | 5,490.16 mi (8,835.56 km) |
