Method: Clean | Average | Optimistic Winter Ascent Dates only (Help)Count a peak only once per dayShow List using Metric Units

Interstate Highway Bounded Regions of the USA - Multiple Ascents Grid

Showing all of Bob Mattson's ascent dates (max 10 rounds) (Overall: 1 out of 85, or 1.18%)

RankPeak Elev-Ft
TotalRound 1
Round 2
Round 3
Round 4
1.Mount Whitney14,49810,088     
2.Mount Elbert14,4339113     
3.Mount Rainier14,41113,246     
4.Longs Peak14,2552940     
5.Mount Shasta14,1629782     
6.Gannett Peak13,8047076     
7.Sierra Blanca Peak11,9735573     
8.San Gorgonio Mountain11,4998294     
9.Crazy Peak11,2095729     
10.San Jacinto Peak10,8398359     
11.Mount Baker10,7818878     
12.Sandia Crest10,6784118     
13.Mount San Antonio10,0646264     
14.Thurston Peak97062706     
15.Mount Eddy90255145     
16.Mount Pinos88314800     
17.Baldy Peak83783928     
18.Mount Olympus79697838     
19.Black Elk Peak72312931     
20.Mount Mitchell66846094     
21.Warren Peaks66501810     
22.Clingmans Dome66434523     
23.Weld County High Point6390100     
24.Mount Washington628861684 1984-06-11  1988-07-29  2010-05-30  2015-08-30 
25.Santiago Peak56874407     
26.Spruce Knob48612801     
27.Balsam Beartown Mountain47102150     
28.Bald Knob43612081     
29.Apple Orchard Mountain42252845     
30.Slide Mountain42003310     
31.Davis Benchmark417656     
33.Cross Mountain35342114     
34.Blue Knob3140820     
35.Hinch Mountain30481608     
36.Magazine Mountain27532153     
37.North Mountain25851405     
38.Buffalo Lookout2561401     
39.Mount Constitution24072407     
40.Cheaha Mountain24051465     
41.Eagle Mountain23011331     
42.Pimple Hill2212392     
43.Punished Womans Mound2090180     
44.Mount Arvon1979959     
45.Okabena Hill173080     
46.Blue Mounds1719939     
47.Briar Hill17061046     
48.Butler County High Point1690260     
48.The Pinnacle1690770     
50.Campbell Hill1549649     
51.Cadillac Mountain15281528     
52.Sewel Fire Tower1503263     
53.San Pedro Hill14801378     
54.Monroe County North High Point1460320     
54.Cass County High Point146060     
56.Sand Mountain1440414     
57.Dowdell Knob1395515     
58.Cuyahoga County High Point129050     
58.Hillsdale County High Point1290380     
60.Lake View Hill128030     
61.Hoosier Hill1257302     
62.Lapham Hill1234304     
63.High Rock Mountain1188508     
63.Jeptha Knob Benchmark1188408     
65.Flanigan Hill1180240     
66.Barr Benchmark11750     
67.Shades Mountain1120300     
68.Youngs Mountain1100330     
69.Chaparral Hill1075155     
70.Williams Hill1064634     
71.Weed Patch Hill1058268     
72.Hendricks County High Point1040120     
73.Webb County High Point950365     
74.Ellis County High Point898253     
75.Schilling School Hill800105     
76.Myrtle Hill Slope79020     
77.Junction 66067040     
78.Great Blue Hill650502     
79.Junction 42044080     
80.Benchmark 36336313     
81.Oak Hill331201     
82.Sugarloaf Mountain315255     
83.Radford Hill246      
84.Sampson County High Point23020     
85.Interstate Hill17020     

Main Peak List: Click here to see the standard peak listing, showning more informational columns and just the first ascent date.

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

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

About the Multiple Ascent Grid:

  • This table grid shows all peaks on a given list, and all ascents done by Bob Mattson, up to 10 ascents per peak.
  • While many peakbaggers do not like to repeat ascents, some will try to do multiple "laps" or "rounds" of a favorite list, often one close to home.
  • The header for each ascent column shows, in parentheses, the total number of peaks climbed in each "round", and clicking the header link will sort your ascents for that round.
  • Due to space limitations, this listing has just the basic peak info, so up to ten date columns can be shown. Please use the main peak list (linked above) for more basic info and functionality.
  • Some climbers will log two ascents of the same peak on the same day--for example, when doing an out-and-back ridge run with other ascents sandwiched between two of the same peak. Some might not consider these to be two separate ascents for the purposes of doing multiple rounds. Clicking on the "Count a peak only once per day" link in the header will collapse multiple ascents of a peak on a single day into just one ascent for this grid 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

Click on a peak to see its name and a clickable link.

(Map only shows peaks ranked by clean prominence)

Click Here for a Full Screen Map

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