| Didcot to Montevarchi | 815.25 mi (1,312.02 km) |
| Didcot to Monticello Conte Otto | 716.37 mi (1,152.89 km) |
| Didcot to Montichiari | 681.57 mi (1,096.89 km) |
| Didcot to Montignoso | 743.46 mi (1,196.49 km) |
| Didcot to Montopoli in Val d'Arno | 780.80 mi (1,256.58 km) |
| Didcot to Monza | 634.52 mi (1,021.16 km) |
| Didcot to Morbegno | 618.82 mi (995.89 km) |
| Didcot to Mori | 683.10 mi (1,099.34 km) |
| Didcot to Morlupo | 918.50 mi (1,478.18 km) |
| Didcot to Morrovalle | 895.71 mi (1,441.50 km) |
| Didcot to Mortara | 633.52 mi (1,019.55 km) |
| Didcot to Mosciano Sant'Angelo | 934.26 mi (1,503.55 km) |
| Didcot to Motta di Livenza | 747.17 mi (1,202.46 km) |
| Didcot to Motta Sant'Anastasia | 1,253.80 mi (2,017.79 km) |
| Didcot to Mottola | 1,152.14 mi (1,854.18 km) |
