| Swindon to Montijo | 904.65 mi (1,455.90 km) |
| Swindon to Montilla | 975.66 mi (1,570.17 km) |
| Swindon to Montmelo | 717.04 mi (1,153.96 km) |
| Swindon to Montornes del Valles | 717.94 mi (1,155.41 km) |
| Swindon to Montoro | 944.26 mi (1,519.64 km) |
| Swindon to Monzon | 673.18 mi (1,083.37 km) |
| Swindon to Mora | 826.12 mi (1,329.52 km) |
| Swindon to Moralzarzal | 759.26 mi (1,221.91 km) |
| Swindon to Moron de la Frontera | 1,013.58 mi (1,631.21 km) |
| Swindon to Mostoles | 782.05 mi (1,258.59 km) |
| Swindon to Motril | 1,026.81 mi (1,652.49 km) |
| Swindon to Muchamiel | 910.62 mi (1,465.51 km) |
| Swindon to Mula | 934.12 mi (1,503.31 km) |
| Swindon to Munguia | 569.10 mi (915.88 km) |
| Swindon to Murcia | 938.40 mi (1,510.20 km) |
