| Gadsden to Oerlinghausen | 4,594.25 mi (7,393.72 km) |
| Gadsden to Oestrich-Winkel | 4,627.46 mi (7,447.18 km) |
| Gadsden to Offenburg | 4,671.71 mi (7,518.40 km) |
| Gadsden to Oftersheim | 4,670.18 mi (7,515.93 km) |
| Gadsden to Ohrdruf | 4,709.11 mi (7,578.58 km) |
| Gadsden to Ohringen | 4,712.29 mi (7,583.70 km) |
| Gadsden to Olbernhau | 4,814.42 mi (7,748.06 km) |
| Gadsden to Olching | 4,817.89 mi (7,753.64 km) |
| Gadsden to Oldenburg | 4,542.26 mi (7,310.06 km) |
| Gadsden to Oldenburg in Holstein | 4,606.10 mi (7,412.81 km) |
| Gadsden to Olfen | 4,552.12 mi (7,325.93 km) |
| Gadsden to Olpe | 4,590.31 mi (7,387.38 km) |
| Gadsden to Olsberg | 4,605.70 mi (7,412.15 km) |
| Gadsden to Oranienburg | 4,741.08 mi (7,630.04 km) |
| Gadsden to Ortenberg | 4,658.42 mi (7,497.01 km) |
