| SeaTac to Marsala | 5,919.82 mi (9,527.03 km) |
| SeaTac to Marsciano | 5,607.81 mi (9,024.90 km) |
| SeaTac to Martano | 5,916.04 mi (9,520.94 km) |
| SeaTac to Martellago | 5,445.10 mi (8,763.03 km) |
| SeaTac to Martina Franca | 5,862.82 mi (9,435.29 km) |
| SeaTac to Martinengo | 5,385.54 mi (8,667.20 km) |
| SeaTac to Martinsicuro | 5,648.30 mi (9,090.06 km) |
| SeaTac to Mascali | 5,993.72 mi (9,645.96 km) |
| SeaTac to Mascalucia | 6,001.22 mi (9,658.03 km) |
| SeaTac to Masera di Padova | 5,451.96 mi (8,774.09 km) |
| SeaTac to Maserada sul Piave | 5,436.64 mi (8,749.43 km) |
| SeaTac to Massa | 5,486.02 mi (8,828.89 km) |
| SeaTac to Massa Lombarda | 5,502.82 mi (8,855.94 km) |
| SeaTac to Massafra | 5,865.05 mi (9,438.88 km) |
| SeaTac to Massalubrense | 5,797.04 mi (9,329.44 km) |
