| South River to Olivares | 3,579.28 mi (5,760.29 km) |
| South River to Olivenza | 3,495.02 mi (5,624.70 km) |
| South River to Olot | 3,847.47 mi (6,191.90 km) |
| South River to Onate | 3,596.39 mi (5,787.82 km) |
| South River to Onda | 3,786.83 mi (6,094.31 km) |
| South River to Onteniente | 3,805.85 mi (6,124.92 km) |
| South River to Orihuela | 3,812.72 mi (6,135.98 km) |
| South River to Osuna | 3,636.64 mi (5,852.61 km) |
| South River to Ourense | 3,359.13 mi (5,405.99 km) |
| South River to Oviedo | 3,428.23 mi (5,517.20 km) |
| South River to Paiporta | 3,796.00 mi (6,109.07 km) |
| South River to Pajara | 3,468.51 mi (5,582.03 km) |
| South River to Palafolls | 3,875.28 mi (6,236.66 km) |
| South River to Palafrugell | 3,886.58 mi (6,254.85 km) |
| South River to Palamos | 3,887.23 mi (6,255.89 km) |
