| Gengenbach to Montemor-o-Novo | 1,052.22 mi (1,693.39 km) |
| Gengenbach to Montemor-o-Velho | 999.53 mi (1,608.59 km) |
| Gengenbach to Montijo | 1,076.89 mi (1,733.09 km) |
| Gengenbach to Mortagua | 969.53 mi (1,560.31 km) |
| Gengenbach to Moura | 1,049.31 mi (1,688.70 km) |
| Gengenbach to Murtosa | 972.66 mi (1,565.35 km) |
| Gengenbach to Nazare | 1,040.50 mi (1,674.52 km) |
| Gengenbach to Nelas | 950.41 mi (1,529.53 km) |
| Gengenbach to Obidos | 1,055.23 mi (1,698.24 km) |
| Gengenbach to Odemira | 1,121.02 mi (1,804.11 km) |
| Gengenbach to Odivelas | 1,082.68 mi (1,742.40 km) |
| Gengenbach to Oeiras | 1,093.12 mi (1,759.21 km) |
| Gengenbach to Olhao | 1,120.80 mi (1,803.75 km) |
| Gengenbach to Oliveira de Azemeis | 961.59 mi (1,547.53 km) |
| Gengenbach to Oliveira de Frades | 955.03 mi (1,536.97 km) |
