| Holbrook to Montalegre | 3,303.23 mi (5,316.04 km) |
| Holbrook to Montemor-o-Novo | 3,368.56 mi (5,421.17 km) |
| Holbrook to Montemor-o-Velho | 3,303.79 mi (5,316.93 km) |
| Holbrook to Montijo | 3,333.98 mi (5,365.52 km) |
| Holbrook to Mortagua | 3,318.48 mi (5,340.58 km) |
| Holbrook to Moura | 3,421.18 mi (5,505.85 km) |
| Holbrook to Murtosa | 3,291.13 mi (5,296.56 km) |
| Holbrook to Nazare | 3,300.41 mi (5,311.50 km) |
| Holbrook to Nelas | 3,334.80 mi (5,366.84 km) |
| Holbrook to Obidos | 3,302.56 mi (5,314.96 km) |
| Holbrook to Odemira | 3,378.71 mi (5,437.51 km) |
| Holbrook to Odivelas | 3,317.20 mi (5,338.52 km) |
| Holbrook to Oeiras | 3,313.44 mi (5,332.47 km) |
| Holbrook to Olhao | 3,434.54 mi (5,527.37 km) |
| Holbrook to Oliveira de Azemeis | 3,295.97 mi (5,304.36 km) |
