| Barrhead to Montalegre | 977.81 mi (1,573.63 km) |
| Barrhead to Montemor-o-Novo | 1,198.09 mi (1,928.15 km) |
| Barrhead to Montemor-o-Velho | 1,097.80 mi (1,766.74 km) |
| Barrhead to Montijo | 1,200.86 mi (1,932.60 km) |
| Barrhead to Mortagua | 1,076.09 mi (1,731.80 km) |
| Barrhead to Moura | 1,228.92 mi (1,977.76 km) |
| Barrhead to Murtosa | 1,058.72 mi (1,703.84 km) |
| Barrhead to Nazare | 1,139.67 mi (1,834.12 km) |
| Barrhead to Nelas | 1,067.68 mi (1,718.27 km) |
| Barrhead to Obidos | 1,156.95 mi (1,861.93 km) |
| Barrhead to Odemira | 1,274.10 mi (2,050.46 km) |
| Barrhead to Odivelas | 1,195.86 mi (1,924.55 km) |
| Barrhead to Oeiras | 1,204.34 mi (1,938.20 km) |
| Barrhead to Olhao | 1,307.20 mi (2,103.74 km) |
| Barrhead to Oliveira de Azemeis | 1,050.15 mi (1,690.05 km) |
