| North Richland Hills to Montalegre | 4,726.14 mi (7,605.99 km) |
| North Richland Hills to Montemor-o-Novo | 4,801.52 mi (7,727.30 km) |
| North Richland Hills to Montemor-o-Velho | 4,733.34 mi (7,617.58 km) |
| North Richland Hills to Montijo | 4,767.40 mi (7,672.39 km) |
| North Richland Hills to Mortagua | 4,746.78 mi (7,639.20 km) |
| North Richland Hills to Moura | 4,854.62 mi (7,812.75 km) |
| North Richland Hills to Murtosa | 4,718.91 mi (7,594.35 km) |
| North Richland Hills to Nazare | 4,731.87 mi (7,615.20 km) |
| North Richland Hills to Nelas | 4,762.42 mi (7,664.38 km) |
| North Richland Hills to Obidos | 4,734.69 mi (7,619.74 km) |
| North Richland Hills to Odemira | 4,813.94 mi (7,747.29 km) |
| North Richland Hills to Odivelas | 4,750.61 mi (7,645.37 km) |
| North Richland Hills to Oeiras | 4,747.17 mi (7,639.84 km) |
| North Richland Hills to Olhao | 4,870.14 mi (7,837.74 km) |
| North Richland Hills to Oliveira de Azemeis | 4,723.24 mi (7,601.31 km) |
