| Hoover to Oerlinghausen | 4,657.13 mi (7,494.92 km) |
| Hoover to Oestrich-Winkel | 4,690.48 mi (7,548.59 km) |
| Hoover to Offenburg | 4,734.77 mi (7,619.88 km) |
| Hoover to Oftersheim | 4,733.21 mi (7,617.37 km) |
| Hoover to Ohrdruf | 4,772.03 mi (7,679.84 km) |
| Hoover to Ohringen | 4,775.32 mi (7,685.14 km) |
| Hoover to Olbernhau | 4,877.28 mi (7,849.23 km) |
| Hoover to Olching | 4,880.93 mi (7,855.09 km) |
| Hoover to Oldenburg | 4,605.04 mi (7,411.10 km) |
| Hoover to Oldenburg in Holstein | 4,668.66 mi (7,513.49 km) |
| Hoover to Olfen | 4,615.05 mi (7,427.21 km) |
| Hoover to Olpe | 4,653.27 mi (7,488.72 km) |
| Hoover to Olsberg | 4,668.63 mi (7,513.43 km) |
| Hoover to Oranienburg | 4,803.75 mi (7,730.88 km) |
| Hoover to Ortenberg | 4,721.40 mi (7,598.37 km) |
