| Sintra to Marsala | 1,182.51 mi (1,903.07 km) |
| Sintra to Marsciano | 1,166.61 mi (1,877.48 km) |
| Sintra to Martano | 1,473.37 mi (2,371.16 km) |
| Sintra to Martellago | 1,192.99 mi (1,919.92 km) |
| Sintra to Martina Franca | 1,420.07 mi (2,285.38 km) |
| Sintra to Martinengo | 1,082.93 mi (1,742.81 km) |
| Sintra to Martinsicuro | 1,246.08 mi (2,005.37 km) |
| Sintra to Mascali | 1,331.67 mi (2,143.11 km) |
| Sintra to Mascalucia | 1,326.03 mi (2,134.03 km) |
| Sintra to Masera di Padova | 1,175.21 mi (1,891.32 km) |
| Sintra to Maserada sul Piave | 1,204.16 mi (1,937.91 km) |
| Sintra to Massa | 1,071.08 mi (1,723.73 km) |
| Sintra to Massa Lombarda | 1,158.68 mi (1,864.72 km) |
| Sintra to Massafra | 1,409.24 mi (2,267.95 km) |
| Sintra to Massalubrense | 1,264.16 mi (2,034.47 km) |
