| Pecos to Mattoon (Illinois) | 1,017.51 mi (1,637.52 km) |
| Pecos to Mauldin (South Carolina) | 1,247.79 mi (2,008.13 km) |
| Pecos to Maumee (Ohio) | 1,303.08 mi (2,097.10 km) |
| Pecos to Maumelle (Arkansas) | 685.82 mi (1,103.73 km) |
| Pecos to Mayagüez (Puerto Rico) | 2,443.02 mi (3,931.66 km) |
| Pecos to Mayfield Heights (Ohio) | 1,405.62 mi (2,262.12 km) |
| Pecos to Mays Chapel (Maryland) | 1,604.25 mi (2,581.79 km) |
| Pecos to Maywood (California) | 870.65 mi (1,401.17 km) |
| Pecos to Maywood (Illinois) | 1,128.10 mi (1,815.51 km) |
| Pecos to McAlester (Oklahoma) | 509.87 mi (820.56 km) |
| Pecos to McAllen (Texas) | 479.03 mi (770.92 km) |
| Pecos to McCalla (Alabama) | 970.43 mi (1,561.75 km) |
| Pecos to McComb (Mississippi) | 769.80 mi (1,238.88 km) |
| Pecos to McDonough (Georgia) | 1,136.85 mi (1,829.58 km) |
| Pecos to McFarland (California) | 951.20 mi (1,530.80 km) |
