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Hill NameLocationDist.Avg.MaxGainBRENTACOL
Mauna Kea from Saddle RoadHawaii23.6 KM9.3%15.2%2186.96498
Mayfield RoadPennsylvania5.3 KM6.6%11.7%350.6500
McElroy Mountain Dr.Georgia1.3 KM14.1%26.6%187725
McElroy Mountain Dr. North SideGeorgia0.6 KM17.7%28.6%114.5351
McKinley RoadMichigan0.7 KM7.9%16.3%52.699
Meads Mountain RoadNew York3.2 KM10.7%17.8%346.4787
Meetinghouse Hill RoadMassachusetts0.4 KM8.5%11.3%34.347
Meetinghouse Road 1New York0.6 KM6.5%8.2%41.347
Meetinghouse Road 2New York0.5 KM6.4%9.7%34.761
Mendon Road (Purgatory)Massachusetts1.6 KM5.6%11.1%90.7123
Merrow RoadConnecticut1.6 KM5.9%14.8%93.6124
Middle Road, WarwickRhode Island0.9 KM4.4%9.1%40.452
Middlebury Gap (East)Vermont9.8 KM3.9%13.9%377.8520
Middlebury Gap (West)Vermont16.4 KM3.3%10.4%538570
Mile Hill Road 31 SConnecticut1.9 KM6.3%14.5%117.3179
Miller RanchCalifornia7.3 KM9.3%15.1%676.11526
Modock HillNew Hampshire0.7 KM10.9%19.6%81.6201
Mohawk Trail EastboundMassachusetts6.7 KM5.8%9.6%387.8472
Molasses Hill RoadRhode Island1.5 KM4.1%11%62.163
Monroe Hill RoadMassachusetts2 KM11.4%21.1%234.2552