| Didcot to Marsala | 1,162.55 mi (1,870.94 km) |
| Didcot to Marsciano | 872.39 mi (1,403.97 km) |
| Didcot to Martano | 1,219.48 mi (1,962.56 km) |
| Didcot to Martellago | 740.11 mi (1,191.09 km) |
| Didcot to Martina Franca | 1,159.49 mi (1,866.01 km) |
| Didcot to Martinengo | 652.27 mi (1,049.73 km) |
| Didcot to Martinsicuro | 928.82 mi (1,494.80 km) |
| Didcot to Mascali | 1,246.68 mi (2,006.35 km) |
| Didcot to Mascalucia | 1,252.52 mi (2,015.74 km) |
| Didcot to Masera di Padova | 739.51 mi (1,190.13 km) |
| Didcot to Maserada sul Piave | 737.33 mi (1,186.61 km) |
| Didcot to Massa | 741.51 mi (1,193.34 km) |
| Didcot to Massa Lombarda | 778.08 mi (1,252.20 km) |
| Didcot to Massafra | 1,157.64 mi (1,863.04 km) |
| Didcot to Massalubrense | 1,060.74 mi (1,707.10 km) |
