| Mealhada to Oerlinghausen | 1,139.67 mi (1,834.12 km) |
| Mealhada to Oestrich-Winkel | 1,036.71 mi (1,668.42 km) |
| Mealhada to Offenburg | 979.32 mi (1,576.07 km) |
| Mealhada to Oftersheim | 1,035.85 mi (1,667.04 km) |
| Mealhada to Ohrdruf | 1,169.03 mi (1,881.36 km) |
| Mealhada to Ohringen | 1,066.09 mi (1,715.71 km) |
| Mealhada to Olbernhau | 1,263.95 mi (2,034.13 km) |
| Mealhada to Olching | 1,112.21 mi (1,789.94 km) |
| Mealhada to Oldenburg | 1,177.17 mi (1,894.47 km) |
| Mealhada to Oldenburg in Holstein | 1,312.02 mi (2,111.49 km) |
| Mealhada to Olfen | 1,086.18 mi (1,748.03 km) |
| Mealhada to Olpe | 1,071.31 mi (1,724.11 km) |
| Mealhada to Olsberg | 1,107.64 mi (1,782.58 km) |
| Mealhada to Oranienburg | 1,329.34 mi (2,139.36 km) |
| Mealhada to Ortenberg | 1,089.26 mi (1,752.99 km) |
