| Warren to Olivares | 3,944.14 mi (6,347.47 km) |
| Warren to Olivenza | 3,854.92 mi (6,203.89 km) |
| Warren to Olot | 4,162.43 mi (6,698.79 km) |
| Warren to Onate | 3,918.11 mi (6,305.59 km) |
| Warren to Onda | 4,122.42 mi (6,634.40 km) |
| Warren to Onteniente | 4,148.99 mi (6,677.15 km) |
| Warren to Orihuela | 4,160.92 mi (6,696.35 km) |
| Warren to Osuna | 3,999.97 mi (6,437.33 km) |
| Warren to Ourense | 3,698.05 mi (5,951.43 km) |
| Warren to Oviedo | 3,755.75 mi (6,044.29 km) |
| Warren to Paiporta | 4,135.14 mi (6,654.86 km) |
| Warren to Pajara | 3,893.53 mi (6,266.04 km) |
| Warren to Palafolls | 4,192.75 mi (6,747.58 km) |
| Warren to Palafrugell | 4,201.44 mi (6,761.57 km) |
| Warren to Palamos | 4,202.62 mi (6,763.47 km) |
