| Keystone to Mineral Wells (Texas) | 975.71 mi (1,570.25 km) |
| Keystone to Minneapolis (Minnesota) | 1,302.35 mi (2,095.94 km) |
| Keystone to Minnehaha (Washington) | 2,485.92 mi (4,000.70 km) |
| Keystone to Minneola (Florida) | 62.15 mi (100.01 km) |
| Keystone to Minnetonka (Minnesota) | 1,305.27 mi (2,100.64 km) |
| Keystone to Minooka (Illinois) | 974.47 mi (1,568.26 km) |
| Keystone to Minot (North Dakota) | 1,710.26 mi (2,752.40 km) |
| Keystone to Mint Hill (North Carolina) | 500.16 mi (804.93 km) |
| Keystone to Miramar (Florida) | 203.87 mi (328.10 km) |
| Keystone to Mishawaka (Indiana) | 957.06 mi (1,540.24 km) |
| Keystone to Mission (Texas) | 975.09 mi (1,569.25 km) |
| Keystone to Mission Bend (Texas) | 797.15 mi (1,282.88 km) |
| Keystone to Mission Viejo (California) | 2,102.87 mi (3,384.24 km) |
| Keystone to Missoula (Montana) | 2,131.15 mi (3,429.76 km) |
| Keystone to Missouri City (Texas) | 788.72 mi (1,269.32 km) |
