| Melres to Oerlinghausen | 1,102.02 mi (1,773.53 km) |
| Melres to Oestrich-Winkel | 1,001.78 mi (1,612.21 km) |
| Melres to Offenburg | 947.47 mi (1,524.80 km) |
| Melres to Oftersheim | 1,002.57 mi (1,613.48 km) |
| Melres to Ohrdruf | 1,134.50 mi (1,825.80 km) |
| Melres to Ohringen | 1,033.81 mi (1,663.76 km) |
| Melres to Olbernhau | 1,231.18 mi (1,981.39 km) |
| Melres to Olching | 1,083.21 mi (1,743.26 km) |
| Melres to Oldenburg | 1,137.69 mi (1,830.94 km) |
| Melres to Oldenburg in Holstein | 1,272.73 mi (2,048.26 km) |
| Melres to Olfen | 1,048.00 mi (1,686.59 km) |
| Melres to Olpe | 1,034.51 mi (1,664.89 km) |
| Melres to Olsberg | 1,070.79 mi (1,723.27 km) |
| Melres to Oranienburg | 1,293.23 mi (2,081.25 km) |
| Melres to Ortenberg | 1,054.45 mi (1,696.98 km) |
