| Karlovo to Montemor-o-Novo | 1,741.75 mi (2,803.08 km) |
| Karlovo to Montemor-o-Velho | 1,732.62 mi (2,788.38 km) |
| Karlovo to Montijo | 1,775.68 mi (2,857.67 km) |
| Karlovo to Mortagua | 1,704.67 mi (2,743.40 km) |
| Karlovo to Moura | 1,715.15 mi (2,760.27 km) |
| Karlovo to Murtosa | 1,719.21 mi (2,766.80 km) |
| Karlovo to Nazare | 1,763.69 mi (2,838.38 km) |
| Karlovo to Nelas | 1,683.71 mi (2,709.68 km) |
| Karlovo to Obidos | 1,773.52 mi (2,854.20 km) |
| Karlovo to Odemira | 1,789.10 mi (2,879.27 km) |
| Karlovo to Odivelas | 1,787.39 mi (2,876.53 km) |
| Karlovo to Oeiras | 1,796.83 mi (2,891.72 km) |
| Karlovo to Olhao | 1,763.49 mi (2,838.07 km) |
| Karlovo to Oliveira de Azemeis | 1,709.27 mi (2,750.80 km) |
| Karlovo to Oliveira de Frades | 1,696.81 mi (2,730.76 km) |
