| Glastonbury to Masanasa | 818.83 mi (1,317.78 km) |
| Glastonbury to Masquefa | 700.19 mi (1,126.85 km) |
| Glastonbury to Matadepera | 696.72 mi (1,121.26 km) |
| Glastonbury to Mazarron | 938.73 mi (1,510.74 km) |
| Glastonbury to Meco | 732.60 mi (1,179.01 km) |
| Glastonbury to Medina del Campo | 688.48 mi (1,108.00 km) |
| Glastonbury to Medina Sidonia | 1,026.65 mi (1,652.23 km) |
| Glastonbury to Mejorada del Campo | 743.57 mi (1,196.67 km) |
| Glastonbury to Meliana | 811.01 mi (1,305.20 km) |
| Glastonbury to Mengibar | 912.23 mi (1,468.09 km) |
| Glastonbury to Merida | 864.27 mi (1,390.91 km) |
| Glastonbury to Miajadas | 844.72 mi (1,359.45 km) |
| Glastonbury to Mieres | 564.17 mi (907.94 km) |
| Glastonbury to Miguelturra | 843.81 mi (1,357.98 km) |
| Glastonbury to Mijas | 1,009.65 mi (1,624.87 km) |
