| Huntington to Oerlinghausen | 427.08 mi (687.32 km) |
| Huntington to Oestrich-Winkel | 472.81 mi (760.92 km) |
| Huntington to Offenburg | 543.84 mi (875.22 km) |
| Huntington to Oftersheim | 520.88 mi (838.28 km) |
| Huntington to Ohrdruf | 541.49 mi (871.44 km) |
| Huntington to Ohringen | 559.80 mi (900.91 km) |
| Huntington to Olbernhau | 647.65 mi (1,042.29 km) |
| Huntington to Olching | 667.65 mi (1,074.48 km) |
| Huntington to Oldenburg | 384.04 mi (618.06 km) |
| Huntington to Oldenburg in Holstein | 482.54 mi (776.57 km) |
| Huntington to Olfen | 384.81 mi (619.29 km) |
| Huntington to Olpe | 425.76 mi (685.19 km) |
| Huntington to Olsberg | 438.44 mi (705.61 km) |
| Huntington to Oranienburg | 593.77 mi (955.58 km) |
| Huntington to Ortenberg | 495.55 mi (797.51 km) |
