| SeaTac to Masanasa | 5,455.54 mi (8,779.85 km) |
| SeaTac to Masquefa | 5,404.76 mi (8,698.12 km) |
| SeaTac to Matadepera | 5,405.31 mi (8,699.01 km) |
| SeaTac to Mazarron | 5,527.77 mi (8,896.08 km) |
| SeaTac to Meco | 5,299.58 mi (8,528.85 km) |
| SeaTac to Medina del Campo | 5,207.90 mi (8,381.30 km) |
| SeaTac to Medina Sidonia | 5,436.87 mi (8,749.80 km) |
| SeaTac to Mejorada del Campo | 5,306.30 mi (8,539.66 km) |
| SeaTac to Meliana | 5,450.43 mi (8,771.62 km) |
| SeaTac to Mengibar | 5,425.85 mi (8,732.06 km) |
| SeaTac to Merida | 5,290.99 mi (8,515.03 km) |
| SeaTac to Miajadas | 5,286.44 mi (8,507.70 km) |
| SeaTac to Mieres | 5,075.26 mi (8,167.85 km) |
| SeaTac to Miguelturra | 5,366.43 mi (8,636.44 km) |
| SeaTac to Mijas | 5,473.33 mi (8,808.48 km) |
