Method: Clean | Average | Optimistic Winter Ascent Dates only (Help)Count duplicate peak ascents on a 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  Prom-Ft TotalRound 1
Round 2
Round 3
Round 4
1.Mount Whitney14,49810,078     
2.Mount Elbert14,4339073     
3.Mount Rainier14,41113,246     
4.Longs Peak14,2552940     
5.Mount Shasta14,1629762     
6.Gannett Peak13,8047076     
7.Sierra Blanca Peak11,9735533     
8.San Gorgonio Mountain11,4998294     
9.Crazy Peak11,2095709     
10.San Jacinto Peak10,8398319     
11.Mount Baker10,7818812     
12.Sandia Crest10,6784098     
13.Mount San Antonio10,0646224     
14.Thurston Peak97062690     
15.Mount Eddy90255105     
16.Mount Pinos88314800     
17.Baldy Peak83783918     
18.Mount Olympus79697838     
19.Black Elk Peak72312911     
20.Mount Mitchell66846089     
21.Warren Peaks66501800     
22.Clingmans Dome66434503     
23.Weld County High Point638080     
24.Mount Washington628861484 1984-06-11  1988-07-29  2010-05-30  2015-08-30 
25.Santiago Peak56874387     
26.Spruce Knob48612781     
27.Balsam Beartown Mountain47102130     
28.Bald Knob43612041     
29.Apple Orchard Mountain42252825     
30.Slide Mountain41803280     
31.Davis Benchmark417636     
33.Cross Mountain35342094     
34.Blue Knob3120780     
35.Hinch Mountain30481588     
36.Magazine Mountain27532133     
37.North Mountain25851385     
38.Buffalo Lookout2561361     
39.Mount Constitution24072407     
40.Cheaha Mountain24051445     
41.Eagle Mountain23011321     
42.Pimple Hill2212372     
43.Punished Womans Mound2080160     
44.Mount Arvon1979949     
45.Okabena Hill173070     
46.Blue Mounds1719934     
47.Briar Hill17061041     
48.The Pinnacle1690750     
49.Butler County High Point1680240     
50.Campbell Hill1549639     
51.Cadillac Mountain15281528     
52.Sewel Fire Tower1503253     
53.San Pedro Hill14601358     
53.Cass County High Point146040     
55.Monroe County North High Point1440280     
56.Sand Mountain1420394     
57.Dowdell Knob1395495     
58.Cuyahoga County High Point128030     
58.Hillsdale County High Point1280360     
58.Lake View Hill128020     
61.Hoosier Hill1257297     
62.Lapham Hill1232292     
63.High Rock Mountain1188498     
63.Jeptha Knob Benchmark1188398     
65.Barr Benchmark11750     
66.Flanigan Hill1160200     
67.Shades Mountain1100280     
68.Youngs Mountain1090310     
69.Chaparral Hill1075135     
70.Williams Hill1064624     
71.Weed Patch Hill1058258     
72.Hendricks County High Point1030100     
73.Webb County High Point940355     
74.Ellis County High Point898253     
75.Schilling School Hill800105     
76.Myrtle Hill Slope7800     
77.Junction 66066020     
78.Great Blue Hill640482     
79.Junction 42042040     
80.Benchmark 3633633     
81.Oak Hill331191     
82.Sugarloaf Mountain310245     
83.Radford Hill246      
84.Sampson County High Point23010     
85.Interstate Hill1600     

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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