| Genc to Oerlinghausen | 1,776.49 mi (2,858.98 km) |
| Genc to Oestrich-Winkel | 1,767.13 mi (2,843.91 km) |
| Genc to Offenburg | 1,748.13 mi (2,813.34 km) |
| Genc to Oftersheim | 1,731.73 mi (2,786.95 km) |
| Genc to Ohrdruf | 1,667.19 mi (2,683.08 km) |
| Genc to Ohringen | 1,688.88 mi (2,717.98 km) |
| Genc to Olbernhau | 1,556.49 mi (2,504.94 km) |
| Genc to Olching | 1,592.25 mi (2,562.49 km) |
| Genc to Oldenburg | 1,821.12 mi (2,930.81 km) |
| Genc to Oldenburg in Holstein | 1,751.42 mi (2,818.64 km) |
| Genc to Olfen | 1,823.68 mi (2,934.93 km) |
| Genc to Olpe | 1,791.80 mi (2,883.62 km) |
| Genc to Olsberg | 1,771.14 mi (2,850.38 km) |
| Genc to Oranienburg | 1,618.02 mi (2,603.94 km) |
| Genc to Ortenberg | 1,728.08 mi (2,781.07 km) |
