Official Mileage Chart: Cities M - O
| Macedon | NY | 445 |
| Macedonia | OH | 180 |
| Mackinaw City | MI | 530 |
| Macon | GA | 617 |
| Madawaska | ME | 1167 |
| Madison | IN | 219 |
| Madison | WI | 527 |
| Madisonville | KY | 381 |
| Magnolia | AR | 850 |
| Maida | ND | 1216 |
| Malone | NY | 678 |
| Malta | OH | 35 |
| Manchester | NH | 758 |
| Manhattan | KS | 855 |
| Manistee | MI | 478 |
| Manitowoc | WI | 554 |
| Mankato | MN | 809 |
| Mansfield | OH | 117 |
| Manteca | CA | 2438 |
| Many | LA | 982 |
| Marathon | TX | 1527 |
| Marianna | FL | 757 |
| Marietta | GA | 516 |
| Marietta | OH | 44 |
| Marinette | WI | 639 |
| Marion | IL | 452 |
| Marion | IN | 240 |
| Marion | KY | 426 |
| Marion | OH | 120 |
| Marlborough | MA | 711 |
| Marlinton | WV | 237 |
| Marquette | MI | 698 |
| Marshall | MN | 916 |
| Marshall | MO | 665 |
| Marshalltown | IA | 669 |
| Marshfield | WI | 658 |
| Martin | SD | 1176 |
| Martins Ferry | OH | 125 |
| Martinsburg | WV | 297 |
| Martinsville | VA | 329 |
| Marysville | OH | 107 |
| Maryville | MO | 760 |
| Maryville | TN | 359 |
| Mason City | IA | 726 |
| Massillon | OH | 145 |
| Mattoon | IL | 379 |
| Maumee | OH | 197 |
| Mayfield | KY | 456 |
| Maynard | MA | 720 |
| Maysville | KY | 129 |
| McAlester | OK | 947 |
| McAllen | TX | 1499 |
| McArthur | OH | 34 |
| McComb | MS | 866 |
| McConnelsville | OH | 35 |
| McCook | NE | 1083 |
| McDonald | OH | 220 |
| McMinnville | TN | 407 |
| McPherson | KS | 924 |
| McRae | GA | 649 |
| Meadville | PA | 243 |
| Medford | OR | 2473 |
| Medford | WI | 695 |
| Medicine Hat | AB | 1794 |
| Medina | NY | 399 |
| Medina | OH | 163 |
| Melbourne | FL | 900 |
| Memphis | TN | 598 |
| Mena | AR | 864 |
| Menlo Park | CA | 2503 |
| Mentor | OH | 199 |
| Merced | CA | 2489 |
| Mercer | PA | 211 |
| Meridian | MS | 720 |
| Mexico | MO | 586 |
| Mexico City | DF | 2113 |
| Miami | FL | 1068 |
| Miami | OK | 795 |
| Michigan City | IN | 342 |
| Middleport | OH | 30 |
| Middlesboro | KY | 306 |
| Middletown | CT | 621 |
| Middletown | DE | 419 |
| Middletown | NY | 531 |
| Middletown | OH | 152 |
| Midland | MI | 364 |
| Midland | TX | 1376 |
| Milan | TN | 504 |
| Miles City | MT | 1453 |
| Milford | PA | 509 |
| Milledgeville | GA | 597 |
| Millersburg | OH | 110 |
| Millersburg | PA | 377 |
| Millis | MA | 719 |
| Millville | NJ | 459 |
| Milwaukee | WI | 473 |
| Minden | LA | 894 |
| Mineral Wells | WV | 44 |
| Minneapolis | MN | 787 |
| Minot | ND | 1279 |
| Mio | MI | 430 |
| Mississauga | ON | 453 |
| Missoula | MT | 1913 |
| Mitchell | SD | 1001 |
| Moab | UT | 1687 |
| Moberly | MO | 621 |
| Mobile | AL | 814 |
| Mobridge | SD | 1163 |
| Modesto | CA | 2453 |
| Mohican S.P. | OH | 127 |
| Moncton | NB | 1214 |
| Monroe | LA | 851 |
| Monroe | MI | 224 |
| Monroe | NC | 393 |
| Monterey | CA | 2563 |
| Montgomery | AL | 658 |
| Monticello | IL | 393 |
| Montpelier | ID | 1714 |
| Montpelier | VT | 756 |
| Montreal | PQ | 735 |
| Montrose | CO | 1544 |
| Morehead | KY | 159 |
| Morgantown | WV | 146 |
| Morristown | NJ | 495 |
| Morristown | TN | 356 |
| Morrow | OH | 133 |
| Moscow | ID | 2155 |
| Moses Lake | WA | 2217 |
| Moultrie | GA | 733 |
| Mountain Home | AR | 701 |
| Mountain Home | ID | 1985 |
| Mountain House | CA | 2455 |
| Moxahala | OH | 31 |
| Mt. Ayr | IA | 716 |
| Mt. Carmel | IL | 372 |
| Mt. Holly | NJ | 465 |
| Mt. Kisco | NY | 557 |
| Mt. Pleasant | MI | 398 |
| Mt. Sterling | OH | 98 |
| Mt. Union | PA | 313 |
| Mt. Vernon | IL | 432 |
| Mt. Vernon | OH | 90 |
| Muncie | IN | 215 |
| Murfreesboro | TN | 416 |
| Murray | KY | 453 |
| Muscatine | IA | 562 |
| Muskegon | MI | 408 |
| Muskogee | OK | 884 |
| Myrtle Beach | SC | 530 |
| Nacogdoches | TX | 1017 |
| Naples | FL | 1051 |
| Narrowburg | NY | 501 |
| Nashua | NH | 743 |
| Nashville | TN | 399 |
| Natchez | MS | 891 |
| Nebraska City | NE | 810 |
| Needles | CA | 2058 |
| Nelson | WI | 716 |
| Nelsonville | OH | 15 |
| Neosho | MO | 769 |
| Netcong | NJ | 482 |
| New Albany | MS | 613 |
| New Bedford | MA | 725 |
| New Britian | CT | 627 |
| New Brunswick | NJ | 491 |
| New Castle | IN | 209 |
| New Castle | PA | 194 |
| New Concord | OH | 70 |
| New England | OH | 9 |
| New Florence | MO | 560 |
| New Haven | CT | 595 |
| New Lexington | OH | 37 |
| New London | CT | 644 |
| New Madrid | MO | 522 |
| New Market | OH | 112 |
| New Marshfield | OH | 10 |
| New Martinsville | WV | 87 |
| New Matamoras | OH | 75 |
| New Orleans | LA | 916 |
| New Philadelphia | OH | 115 |
| New Roads | LA | 964 |
| New Stanton | PA | 193 |
| New Straitsville | OH | 49 |
| New Ulm | MN | 838 |
| New Wilmington | PA | 220 |
| New York | NY | 539 |
| Newark | DE | 409 |
| Newark | NJ | 511 |
| Newark | OH | 67 |
| Newberry | SC | 458 |
| Newburgh | NY | 553 |
| Newcastle | WY | 1357 |
| Newport | OR | 2549 |
| Newport | RI | 696 |
| Newport | VT | 812 |
| Newport News | VA | 488 |
| Newton | IA | 672 |
| Niagara Falls | NY | 379 |
| Niles | OH | 199 |
| Nogales | AZ | 1939 |
| Norfolk | NE | 911 |
| Norfolk | VA | 503 |
| Norman | OK | 1002 |
| Norristown | PA | 428 |
| North Adams | MA | 660 |
| North Bay | ON | 664 |
| North Bay | ON | 668 |
| North Haven | CT | 603 |
| North Platte | NE | 1085 |
| North Sydney | NS | 1508 |
| North Tarrytown | NY | 545 |
| Northampton | MA | 675 |
| Norton | KS | 1031 |
| Norton | MA | 711 |
| Norton | VA | 258 |
| Norwalk | OH | 154 |
| Norwich | CT | 651 |
| Norwich | NY | 525 |
| Nutley | NJ | 518 |
| Nyack | NY | 540 |
| Oak Hill | OH | 51 |
| Oak Ridge | TN | 340 |
| Oakhurst | CA | 2489 |
| Oakland | CA | 2467 |
| Oakland | IA | 810 |
| Oakley | KS | 1092 |
| Oberlin | OH | 189 |
| Ocala | FL | 824 |
| Oaean City | MD | 470 |
| Oaeanside | CA | 2292 |
| Odessa | TX | 1396 |
| Ogden | UT | 1729 |
| Ogdensburg | NY | 617 |
| Ogunguit | ME | 789 |
| Okeechobee | FL | 971 |
| Oklahoma City | OK | 982 |
| Olathe | KS | 756 |
| Olean | NY | 355 |
| Olney | IL | 375 |
| Olympia | WA | 2432 |
| Omaha | NE | 835 |
| Oneonta | NY | 538 |
| Ontario | CA | 2281 |
| Ontario | OR | 2078 |
| Opelika | AL | 621 |
| Opelousa | LA | 996 |
| Orange | TX | 1084 |
| Orangeburg | SC | 497 |
| Oregon | IL | 505 |
| Oregon | OH | 221 |
| Orient | OH | 99 |
| Orlando | FL | 868 |
| Ortonville | MN | 957 |
| Osceola | IA | 700 |
| Oshkosh | WI | 553 |
| Oskaloosa | IA | 654 |
| Osoyoos | BC | 2295 |
| Oswego | NY | 504 |
| Ottawa | ON | 671 |
| Otterbein | OH | 161 |
| Ottumwa | IA | 627 |
| Owego | NY | 464 |
| Owensboro | KY | 357 |
| Oxford | MS | 624 |
| Oxford | OH | 191 |
| O'Neill | NE | 986 |
