| North Little Rock to Montalegre | 4,416.42 mi (7,107.54 km) |
| North Little Rock to Montemor-o-Novo | 4,488.98 mi (7,224.32 km) |
| North Little Rock to Montemor-o-Velho | 4,421.82 mi (7,116.23 km) |
| North Little Rock to Montijo | 4,454.71 mi (7,169.17 km) |
| North Little Rock to Mortagua | 4,435.61 mi (7,138.43 km) |
| North Little Rock to Moura | 4,541.93 mi (7,309.53 km) |
| North Little Rock to Murtosa | 4,407.88 mi (7,093.80 km) |
| North Little Rock to Nazare | 4,419.79 mi (7,112.96 km) |
| North Little Rock to Nelas | 4,451.45 mi (7,163.92 km) |
| North Little Rock to Obidos | 4,422.40 mi (7,117.17 km) |
| North Little Rock to Odemira | 4,500.63 mi (7,243.06 km) |
| North Little Rock to Odivelas | 4,437.92 mi (7,142.15 km) |
| North Little Rock to Oeiras | 4,434.38 mi (7,136.44 km) |
| North Little Rock to Olhao | 4,556.69 mi (7,333.29 km) |
| North Little Rock to Oliveira de Azemeis | 4,412.35 mi (7,101.00 km) |
