| Hartford to Montalegre | 3,258.05 mi (5,243.32 km) |
| Hartford to Montemor-o-Novo | 3,327.30 mi (5,354.78 km) |
| Hartford to Montemor-o-Velho | 3,260.91 mi (5,247.92 km) |
| Hartford to Montijo | 3,292.99 mi (5,299.55 km) |
| Hartford to Mortagua | 3,275.10 mi (5,270.77 km) |
| Hartford to Moura | 3,380.20 mi (5,439.91 km) |
| Hartford to Murtosa | 3,247.55 mi (5,226.43 km) |
| Hartford to Nazare | 3,258.37 mi (5,243.85 km) |
| Hartford to Nelas | 3,291.18 mi (5,296.64 km) |
| Hartford to Obidos | 3,260.86 mi (5,247.84 km) |
| Hartford to Odemira | 3,338.93 mi (5,373.49 km) |
| Hartford to Odivelas | 3,276.20 mi (5,272.53 km) |
| Hartford to Oeiras | 3,272.63 mi (5,266.79 km) |
| Hartford to Olhao | 3,395.07 mi (5,463.83 km) |
| Hartford to Oliveira de Azemeis | 3,252.21 mi (5,233.92 km) |
