| Cave Spring to Olivares | 3,944.13 mi (6,347.47 km) |
| Cave Spring to Olivenza | 3,861.45 mi (6,214.41 km) |
| Cave Spring to Olot | 4,221.64 mi (6,794.07 km) |
| Cave Spring to Onate | 3,970.00 mi (6,389.09 km) |
| Cave Spring to Onda | 4,158.28 mi (6,692.11 km) |
| Cave Spring to Onteniente | 4,175.86 mi (6,720.40 km) |
| Cave Spring to Orihuela | 4,181.64 mi (6,729.69 km) |
| Cave Spring to Osuna | 4,001.86 mi (6,440.37 km) |
| Cave Spring to Ourense | 3,730.45 mi (6,003.58 km) |
| Cave Spring to Oviedo | 3,801.25 mi (6,117.52 km) |
| Cave Spring to Paiporta | 4,166.80 mi (6,705.82 km) |
| Cave Spring to Pajara | 3,801.34 mi (6,117.66 km) |
| Cave Spring to Palafolls | 4,249.17 mi (6,838.38 km) |
| Cave Spring to Palafrugell | 4,260.74 mi (6,857.00 km) |
| Cave Spring to Palamos | 4,261.33 mi (6,857.96 km) |
