| Giffoni Valle Piana to McKeesport (Pennsylvania) | 4,700.24 mi (7,564.30 km) |
| Giffoni Valle Piana to McKinleyville (California) | 6,236.82 mi (10,037.20 km) |
| Giffoni Valle Piana to McKinney (Texas) | 5,727.32 mi (9,217.23 km) |
| Giffoni Valle Piana to McLean (Virginia) | 4,640.42 mi (7,468.03 km) |
| Giffoni Valle Piana to McMinnville (Oregon) | 5,959.47 mi (9,590.85 km) |
| Giffoni Valle Piana to McMinnville (Tennessee) | 5,152.22 mi (8,291.70 km) |
| Giffoni Valle Piana to McNair (Virginia) | 4,649.70 mi (7,482.97 km) |
| Giffoni Valle Piana to McPherson (Kansas) | 5,515.47 mi (8,876.29 km) |
| Giffoni Valle Piana to Mead Valley (California) | 6,455.53 mi (10,389.17 km) |
| Giffoni Valle Piana to Meadow Woods (Florida) | 5,271.14 mi (8,483.08 km) |
| Giffoni Valle Piana to Meadowbrook (Virginia) | 4,712.90 mi (7,584.68 km) |
| Giffoni Valle Piana to Meadville (Pennsylvania) | 4,660.96 mi (7,501.09 km) |
| Giffoni Valle Piana to Mebane (North Carolina) | 4,848.09 mi (7,802.25 km) |
| Giffoni Valle Piana to Mechanicsville (Virginia) | 4,699.80 mi (7,563.59 km) |
| Giffoni Valle Piana to Medford (Massachusetts) | 4,242.40 mi (6,827.48 km) |
