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

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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