| Donaueschingen to Montemor-o-Novo | 1,054.48 mi (1,697.02 km) |
| Donaueschingen to Montemor-o-Velho | 1,005.33 mi (1,617.93 km) |
| Donaueschingen to Montijo | 1,080.12 mi (1,738.29 km) |
| Donaueschingen to Mortagua | 975.31 mi (1,569.61 km) |
| Donaueschingen to Moura | 1,049.56 mi (1,689.11 km) |
| Donaueschingen to Murtosa | 979.58 mi (1,576.48 km) |
| Donaueschingen to Nazare | 1,045.66 mi (1,682.83 km) |
| Donaueschingen to Nelas | 955.86 mi (1,538.31 km) |
| Donaueschingen to Obidos | 1,060.05 mi (1,705.98 km) |
| Donaueschingen to Odemira | 1,122.00 mi (1,805.68 km) |
| Donaueschingen to Odivelas | 1,086.47 mi (1,748.50 km) |
| Donaueschingen to Oeiras | 1,096.90 mi (1,765.29 km) |
| Donaueschingen to Olhao | 1,119.77 mi (1,802.10 km) |
| Donaueschingen to Oliveira de Azemeis | 968.54 mi (1,558.72 km) |
| Donaueschingen to Oliveira de Frades | 961.35 mi (1,547.14 km) |
