| Grimbergen to Montemor-o-Novo | 1,046.62 mi (1,684.38 km) |
| Grimbergen to Montemor-o-Velho | 973.33 mi (1,566.42 km) |
| Grimbergen to Montijo | 1,064.43 mi (1,713.03 km) |
| Grimbergen to Mortagua | 944.53 mi (1,520.07 km) |
| Grimbergen to Moura | 1,056.27 mi (1,699.90 km) |
| Grimbergen to Murtosa | 940.28 mi (1,513.23 km) |
| Grimbergen to Nazare | 1,017.00 mi (1,636.71 km) |
| Grimbergen to Nelas | 928.17 mi (1,493.74 km) |
| Grimbergen to Obidos | 1,033.48 mi (1,663.22 km) |
| Grimbergen to Odemira | 1,121.42 mi (1,804.76 km) |
| Grimbergen to Odivelas | 1,066.55 mi (1,716.45 km) |
| Grimbergen to Oeiras | 1,076.80 mi (1,732.94 km) |
| Grimbergen to Olhao | 1,133.64 mi (1,824.42 km) |
| Grimbergen to Oliveira de Azemeis | 929.40 mi (1,495.73 km) |
| Grimbergen to Oliveira de Frades | 927.13 mi (1,492.07 km) |
