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Interstate Highway Bounded Regions of the USA

Showing Bob Mattson's first ascent dates for climbed peaks (1 out of 85, or 1.18%)

RankPeakSection Elev-M StateRange (Level 4) Prom-M AscentsAscent Date
1.Mount WashingtonI-81, I-95, I-90, Canada1917New HampshireWhite Mountains187441331984-06-11
 Mount WhitneyI-5, I-15, I-40, I-804419CaliforniaSequoia Sierra Nevada30722659 
 Mount ElbertI-15, I-25, I-40, I-704399ColoradoSawatch Range27651422 
 Mount RainierI-5, I-15, I-84, I-904392WashingtonSouth Washington Cascades40372057 
 Longs PeakI-15, I-25, I-70, I-804345ColoradoFront Range896703 
 Mount ShastaI-5, I-15, I-80, I-844317CaliforniaCalifornia Cascades29751131 
 Gannett PeakI-15, I-25, I-80, I-904207WyomingWind River Range2157270 
 Sierra Blanca PeakI-25, I-35, I-10/20, I-403649New MexicoSoutheast New Mexico Ranges1686118 
 San Gorgonio MountainI-15, I-25, I-10, I-403505CaliforniaTransverse Ranges25281308 
 Crazy PeakI-15, I-29, I-90/94, Canada3417MontanaCentral Montana Ranges174079 
 San Jacinto PeakI-15, I-25, Mexico, I-103304CaliforniaPeninsular Southern California Ranges25361857 
 Mount BakerI-5, I-15, I-90, Canada3286WashingtonNorth Cascades26861312 
 Sandia CrestI-25, I-35, I-40, I-703255New MexicoSoutheast New Mexico Ranges1249314 
 Mount San AntonioI-5, I-15, I-10, I-403068CaliforniaTransverse Ranges18973160 
 Thurston PeakI-15, (I-25), I-80, I-84 2958UtahWasatch Range820144 
 Mount EddyPacific, I-5, I-80, I-842751CaliforniaKlamath Mountains1556276 
 Mount PinosPacific, I-5, I-10, I-802692CaliforniaTransverse Ranges1463614 
 Baldy Peak(I-25), I-35, Mexico, I-102554TexasTrans-Pecos Texas Ranges119456 
 Mount OlympusPacific, I-5, I-86, I-902429WashingtonOlympic Mountains2389368 
 Black Elk PeakI-25, I-29, I-80, I-902204South DakotaBlack Hills887783 
 Mount Mitchell(I-75), I-77, I-40, I-812037North CarolinaCentral Blue Ridge Ranges18561326 
 Warren Peaks(I-25), I-29, I-90, I-942027WyomingBlack Hills54925 
 Clingmans DomeI-75, I-77, I-85, I-402025North Carolina/TennesseeGreat Smoky Mountains13731358 
 Weld County High PointI-25, I-29, I-70, I-801945ColoradoCentral Great Plains2444 
 Santiago PeakI-5, I-15, I-101733CaliforniaPeninsular Southern California Ranges1337509 
 Spruce KnobI-77, I-81, I-64, I-701482West VirginiaAllegheny Mountains848802 
 Balsam Beartown MountainI-75, I-77, I-81, I-641436VirginiaSouthern Appalachian Ridges64946 
 Bald KnobI-77, I-81, (I-40), I-641329VirginiaCentral Appalachian Ridges62269 
 Apple Orchard MountainI-77/81, I-95, I-40, I-641288VirginiaNorthern Blue Ridge861157 
 Slide MountainI-81, I-95, I-80, I-901274New YorkCatskill Mountains10001042 
 Davis Benchmark(I-25), I-35, I-10, I-201273TexasTrans-Pecos Texas Ranges112 
 HawksbillI-81, I-95, I-64 , I-701234VirginiaNorthern Blue Ridge655345 
 Cross MountainI-65, I-75, I-40, I-641077TennesseeCumberland Mountains63845 
 Blue KnobI-77, I-81, I-70, I-80951PennsylvaniaAllegheny Mountains23882 
 Hinch MountainI-65, I-75, I-20, I-40929TennesseeCumberland Plateau48425 
 Magazine MountainI-35, I-55, I-20, I-40839ArkansasOuachita Mountains650613 
 North MountainI-77, I-81, I-80, I-90788PennsylvaniaAllegheny Plateau42216 
 Buffalo LookoutI-35, I-55, I-40, I-44781ArkansasOzark Plateau11017 
 Mount ConstitutionPacific, I-5, I-90, Canada734WashingtonInside Passage Islands734377 
 Cheaha MountainI-65, I-75, I-85, I-20733AlabamaSouthern Appalachian Ridges440683 
 Eagle MountainI-29, I-35, I-94, Canada701MinnesotaSuperior Upland403439 
 Pimple HillI-81, I-95, I-70, I-80674PennsylvaniaAllegheny Plateau11311 
 Punished Womans MoundI-29, I-35, I-90, I-94634South DakotaNorthern US Great Plains499 
 Mount ArvonI-35, I-55, I-94, Canada603MichiganSuperior Upland289415 
 Okabena HillI-29, I-35, I-80, I-90527MinnesotaNorthern US Great Plains211 
 Blue MoundsI-35, I-55, I-80, I-90524WisconsinUpper Mississippi Area285105 
 Briar HillI-55, I-75, I-94, Canada520MichiganLower Peninsula-Heartland31732 
 The PinnacleI-75, I-77, I-20, I-85515North CarolinaPiedmont22973 
 Butler County High PointI-35, I-44, I-70512KansasCentral Great Plains7320 
 Campbell HillI-75, I-77, I-70, I-80472OhioLower Peninsula-Heartland195672 
 Cadillac MountainI-95, Atlantic, I-90, Canada466MaineNew England Upland466814 
 Sewel Fire TowerI-75, I-94, Canada458MichiganLower Peninsula-Heartland772 
 Cass County High PointI-29, I-35, (I-70), I-80445IowaUpper Mississippi Area1217 
 San Pedro HillPacific, I-5, I-10445CaliforniaTransverse Ranges41444 
 Monroe County North High PointI-35, (I-55), I-90, I-94439WisconsinUpper Mississippi Area855 
 Sand MountainI-75, I-77, I-64, I-70433KentuckyCumberland Plateau1205 
 Dowdell KnobI-65, I-75, I-10, I-85425GeorgiaPiedmont15141 
 Lake View HillI-75, I-81, I-90, I-94390PennsylvaniaAllegheny Plateau62 
 Cuyahoga County High Point(I-75), I-77, I-80, I-90390OhioLower Peninsula-Heartland946 
 Hillsdale County High Point(I-65), I-75, I-90, I-94390MichiganLower Peninsula-Heartland11016 
 Hoosier HillI-65, I-75, I-70, I-80383IndianaLower Peninsula-Heartland91636 
 Lapham Hill(I-35), (I-55), I-90, I-94376WisconsinUpper Mississippi Area8949 
 High Rock MountainI-77, I-95, I-20, I-85362North CarolinaPiedmont15215 
 Jeptha Knob BenchmarkI-65, I-75, I-64, I-70362KentuckyCumberland Plateau1215 
 Barr BenchmarkI-35, I-55, I-70, I-80358IowaUpper Mississippi Area01 
 Flanigan HillI-55, I-65, I-20, I-40354TennesseeCumberland Plateau6114 
 Shades MountainI-55, I-65, I-10, I-20335AlabamaCumberland Plateau852 
 Youngs MountainI-77,I-85,I-40332North CarolinaPiedmont9432 
 Chaparral HillI-75, I-95, I-10, I-20328GeorgiaPiedmont411 
 Williams HillI-55, I-65, I-40, I-64324IllinoisLower Peninsula-Heartland19046 
 Weed Patch Hill(I-55), I-65, I-64, I-70322IndianaLower Peninsula-Heartland7927 
 Hendricks County High PointI-55, I-65, I-70, I-80314IndianaLower Peninsula-Heartland308 
 Webb County High PointI-35, I-55, Mexico, I-10287TexasSouthern Great Plains1086 
 Ellis County High PointI-35 W, I-55, I-10, I-20274TexasSouthern Great Plains7713 
 Schilling School HillI-55, I-65, I-80, I-90244IllinoisLower Peninsula-Heartland322 
 Myrtle Hill SlopeI-85, I-95, I-40, I-64238North CarolinaPiedmont01 
 Junction 660I-65, (I-75), I-80, I-90201IndianaLower Peninsula-Heartland63 
 Great Blue HillI-95, Atlantic, I-80, I-90195MassachusettsNew England Upland147380 
 Junction 420I-95, I-70, I-80128MarylandNorthern Blue Ridge122 
 Benchmark 363I-95, I-64, I-70111MarylandNorthern Blue Ridge12 
 Oak HillI-65, I-75, Gulf, I-10101FloridaSoutheast Coast5828 
 Sugarloaf MountainI-75, I-95, Atlantic, I-1094FloridaSoutheast Coast7578 
 Radford HillI-95, I-40, I-64 75North CarolinaPiedmont 1 
 Sampson County High PointI-95, Atlantic, I-4070North CarolinaPiedmont312 
 Interstate HillI-55, I-65, I-1049AlabamaSoutheast Coast02 

Front Runners List: Click to see list completion progress by climbers that log their climbs using

Multiple Ascents Grid: Click for a grid showing all of Bob Mattson's ascents of peaks on this list (including up to 10 rounds of repeats).

Compare Climbers: Click to compare ascents of up to 5 climbers working on this list.

List Description

There are 22 interstate highways in the USA with a length of over 600 miles—in order, this is a list of the numbers of these routes:

5, 10, 15, 20, 25, 29, 35, 40, 44, 55, 64, 65, 70, 75, 77, 80, 81, 84, 85, 90, 94, 95

The longest is I-90 at 3020 miles, and the shortest is I-77 at 610 miles. This network of long highways divides the area of the 48 contiguous states into 85 chunks of land, and this list shows the highest peak for each of these sections.

Note that for the purposes of this analysis, interstate highways that approach coastal areas are assumed to continue to the ocean for the purposes of dividing the regions. Also note that some of these areas, particularly near Chicago and Los Angeles, can be very small.

This list includes many high, popular and well-known peaks, including 15 state high points and an additional 53 county high points. Most of the remaining 16 peaks are quite obscure. Overall, it’s an interesting grab-bag of objectives.


Thanks to Ron Tagliapietra, who created this list as a labor of love, and Andy Martin, who helped with the research.


Map Showing Location of Peaks

 = Peaks climbed by Bob Mattson   = Unclimbed peaks

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