| Fort Campbell North to Olivares | 4,331.09 mi (6,970.22 km) |
| Fort Campbell North to Olivenza | 4,245.86 mi (6,833.05 km) |
| Fort Campbell North to Olot | 4,583.64 mi (7,376.65 km) |
| Fort Campbell North to Onate | 4,335.15 mi (6,976.75 km) |
| Fort Campbell North to Onda | 4,531.17 mi (7,292.22 km) |
| Fort Campbell North to Onteniente | 4,552.67 mi (7,326.82 km) |
| Fort Campbell North to Orihuela | 4,561.01 mi (7,340.24 km) |
| Fort Campbell North to Osuna | 4,388.23 mi (7,062.17 km) |
| Fort Campbell North to Ourense | 4,104.11 mi (6,604.92 km) |
| Fort Campbell North to Oviedo | 4,169.13 mi (6,709.56 km) |
| Fort Campbell North to Paiporta | 4,541.55 mi (7,308.91 km) |
| Fort Campbell North to Pajara | 4,211.56 mi (6,777.85 km) |
| Fort Campbell North to Palafolls | 4,612.59 mi (7,423.25 km) |
| Fort Campbell North to Palafrugell | 4,622.75 mi (7,439.60 km) |
| Fort Campbell North to Palamos | 4,623.64 mi (7,441.03 km) |
