| Campagna to Oerlinghausen | 838.13 mi (1,348.84 km) |
| Campagna to Oestrich-Winkel | 730.50 mi (1,175.63 km) |
| Campagna to Offenburg | 643.48 mi (1,035.58 km) |
| Campagna to Oftersheim | 679.77 mi (1,093.98 km) |
| Campagna to Ohrdruf | 732.64 mi (1,179.07 km) |
| Campagna to Ohringen | 649.67 mi (1,045.54 km) |
| Campagna to Olbernhau | 696.12 mi (1,120.30 km) |
| Campagna to Olching | 552.78 mi (889.61 km) |
| Campagna to Oldenburg | 920.29 mi (1,481.07 km) |
| Campagna to Oldenburg in Holstein | 961.89 mi (1,548.01 km) |
| Campagna to Olfen | 846.89 mi (1,362.93 km) |
| Campagna to Olpe | 795.14 mi (1,279.66 km) |
| Campagna to Olsberg | 802.74 mi (1,291.88 km) |
| Campagna to Oranienburg | 839.75 mi (1,351.45 km) |
| Campagna to Ortenberg | 730.03 mi (1,174.87 km) |
