| Box Elder to Olivares | 4,785.47 mi (7,701.47 km) |
| Box Elder to Olivenza | 4,689.50 mi (7,547.03 km) |
| Box Elder to Olot | 4,909.73 mi (7,901.45 km) |
| Box Elder to Onate | 4,684.34 mi (7,538.72 km) |
| Box Elder to Onda | 4,908.07 mi (7,898.77 km) |
| Box Elder to Onteniente | 4,947.55 mi (7,962.31 km) |
| Box Elder to Orihuela | 4,968.28 mi (7,995.68 km) |
| Box Elder to Osuna | 4,837.53 mi (7,785.24 km) |
| Box Elder to Ourense | 4,500.25 mi (7,242.46 km) |
| Box Elder to Oviedo | 4,536.69 mi (7,301.10 km) |
| Box Elder to Paiporta | 4,926.85 mi (7,929.00 km) |
| Box Elder to Pajara | 4,837.63 mi (7,785.42 km) |
| Box Elder to Palafolls | 4,943.78 mi (7,956.25 km) |
| Box Elder to Palafrugell | 4,947.47 mi (7,962.18 km) |
| Box Elder to Palamos | 4,949.59 mi (7,965.59 km) |
