| Giffnock to McKeesport (Pennsylvania) | 3,457.00 mi (5,563.51 km) |
| Giffnock to McKinleyville (California) | 4,882.07 mi (7,856.93 km) |
| Giffnock to McKinney (Texas) | 4,443.58 mi (7,151.25 km) |
| Giffnock to McLean (Virginia) | 3,425.43 mi (5,512.69 km) |
| Giffnock to McMinnville (Oregon) | 4,607.91 mi (7,415.71 km) |
| Giffnock to McMinnville (Tennessee) | 3,912.57 mi (6,296.67 km) |
| Giffnock to McNair (Virginia) | 3,433.28 mi (5,525.34 km) |
| Giffnock to McPherson (Kansas) | 4,202.15 mi (6,762.71 km) |
| Giffnock to Mead Valley (California) | 5,102.39 mi (8,211.50 km) |
| Giffnock to Meadow Woods (Florida) | 4,128.10 mi (6,643.54 km) |
| Giffnock to Meadowbrook (Virginia) | 3,510.76 mi (5,650.01 km) |
| Giffnock to Meadville (Pennsylvania) | 3,405.17 mi (5,480.08 km) |
| Giffnock to Mebane (North Carolina) | 3,646.72 mi (5,868.83 km) |
| Giffnock to Mechanicsville (Virginia) | 3,496.52 mi (5,627.10 km) |
| Giffnock to Medford (Massachusetts) | 3,028.78 mi (4,874.35 km) |
