| Troisdorf to Montemor-o-Novo | 1,125.06 mi (1,810.61 km) |
| Troisdorf to Montemor-o-Velho | 1,058.81 mi (1,703.98 km) |
| Troisdorf to Montijo | 1,145.53 mi (1,843.55 km) |
| Troisdorf to Mortagua | 1,029.38 mi (1,656.62 km) |
| Troisdorf to Moura | 1,129.95 mi (1,818.47 km) |
| Troisdorf to Murtosa | 1,027.70 mi (1,653.92 km) |
| Troisdorf to Nazare | 1,101.81 mi (1,773.19 km) |
| Troisdorf to Nelas | 1,011.91 mi (1,628.51 km) |
| Troisdorf to Obidos | 1,117.76 mi (1,798.86 km) |
| Troisdorf to Odemira | 1,198.02 mi (1,928.03 km) |
| Troisdorf to Odivelas | 1,149.00 mi (1,849.14 km) |
| Troisdorf to Oeiras | 1,159.38 mi (1,865.84 km) |
| Troisdorf to Olhao | 1,205.46 mi (1,940.00 km) |
| Troisdorf to Oliveira de Azemeis | 1,016.67 mi (1,636.18 km) |
| Troisdorf to Oliveira de Frades | 1,012.88 mi (1,630.07 km) |
