| Karlovac to Marco de Canavezes | 1,222.67 mi (1,967.70 km) |
| Karlovac to Marinha Grande | 1,300.45 mi (2,092.87 km) |
| Karlovac to Massama | 1,347.86 mi (2,169.18 km) |
| Karlovac to Matosinhos | 1,249.20 mi (2,010.39 km) |
| Karlovac to Mealhada | 1,258.80 mi (2,025.85 km) |
| Karlovac to Melgaco | 1,205.59 mi (1,940.21 km) |
| Karlovac to Melres | 1,237.76 mi (1,991.98 km) |
| Karlovac to Mira | 1,271.00 mi (2,045.47 km) |
| Karlovac to Miranda do Corvo | 1,261.36 mi (2,029.96 km) |
| Karlovac to Mirandela | 1,168.28 mi (1,880.16 km) |
| Karlovac to Mogadouro | 1,149.75 mi (1,850.34 km) |
| Karlovac to Moimenta da Beira | 1,202.19 mi (1,934.74 km) |
| Karlovac to Moita | 1,337.54 mi (2,152.56 km) |
| Karlovac to Moncao | 1,216.90 mi (1,958.42 km) |
| Karlovac to Montalegre | 1,189.46 mi (1,914.25 km) |
