| Huntington to Orbetello | 974.54 mi (1,568.38 km) |
| Huntington to Oria | 1,271.51 mi (2,046.30 km) |
| Huntington to Oristano | 1,071.88 mi (1,725.03 km) |
| Huntington to Orta Nova | 1,165.94 mi (1,876.40 km) |
| Huntington to Orte | 1,004.92 mi (1,617.26 km) |
| Huntington to Ortona | 1,069.34 mi (1,720.93 km) |
| Huntington to Orvieto | 982.33 mi (1,580.90 km) |
| Huntington to Orzinuovi | 768.34 mi (1,236.53 km) |
| Huntington to Osimo | 978.80 mi (1,575.22 km) |
| Huntington to Ospitaletto | 763.62 mi (1,228.93 km) |
| Huntington to Ostuni | 1,257.03 mi (2,023.00 km) |
| Huntington to Ottaviano | 1,157.04 mi (1,862.07 km) |
| Huntington to Ovada | 778.27 mi (1,252.51 km) |
| Huntington to Ozieri | 1,036.81 mi (1,668.58 km) |
| Huntington to Paceco | 1,279.30 mi (2,058.83 km) |
