| Ocana to Oerlinghausen | 1,011.89 mi (1,628.48 km) |
| Ocana to Oestrich-Winkel | 890.77 mi (1,433.56 km) |
| Ocana to Offenburg | 814.46 mi (1,310.75 km) |
| Ocana to Oftersheim | 878.51 mi (1,413.82 km) |
| Ocana to Ohrdruf | 1,016.75 mi (1,636.30 km) |
| Ocana to Ohringen | 901.46 mi (1,450.76 km) |
| Ocana to Olbernhau | 1,098.15 mi (1,767.30 km) |
| Ocana to Olching | 927.36 mi (1,492.43 km) |
| Ocana to Oldenburg | 1,064.55 mi (1,713.23 km) |
| Ocana to Oldenburg in Holstein | 1,194.58 mi (1,922.50 km) |
| Ocana to Olfen | 964.38 mi (1,552.02 km) |
| Ocana to Olpe | 938.51 mi (1,510.38 km) |
| Ocana to Olsberg | 974.28 mi (1,567.95 km) |
| Ocana to Oranienburg | 1,185.25 mi (1,907.48 km) |
| Ocana to Ortenberg | 940.93 mi (1,514.28 km) |
