| Hickory to Oerlinghausen | 4,325.32 mi (6,960.93 km) |
| Hickory to Oestrich-Winkel | 4,354.46 mi (7,007.83 km) |
| Hickory to Offenburg | 4,396.04 mi (7,074.75 km) |
| Hickory to Oftersheim | 4,396.39 mi (7,075.31 km) |
| Hickory to Ohrdruf | 4,439.19 mi (7,144.18 km) |
| Hickory to Ohringen | 4,438.71 mi (7,143.42 km) |
| Hickory to Olbernhau | 4,545.81 mi (7,315.77 km) |
| Hickory to Olching | 4,543.66 mi (7,312.32 km) |
| Hickory to Oldenburg | 4,275.48 mi (6,880.72 km) |
| Hickory to Oldenburg in Holstein | 4,343.38 mi (6,989.99 km) |
| Hickory to Olfen | 4,282.00 mi (6,891.21 km) |
| Hickory to Olpe | 4,319.08 mi (6,950.89 km) |
| Hickory to Olsberg | 4,335.47 mi (6,977.26 km) |
| Hickory to Oranienburg | 4,476.54 mi (7,204.29 km) |
| Hickory to Ortenberg | 4,386.65 mi (7,059.63 km) |
