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  1. #41
    Registered User Mikerfixit's Avatar
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    I've used Google Earth for many years to calculate the elevation and provide a profile for my hikes.

  2. #42
    Registered User LittleRock's Avatar
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    Last but not least, the steepest 1 mile AT segments.

    Overall:
    Rank AT Mile State Elev. Change (ft) Grade (%) Location
    1 1805.4 NH 1562 29.6 SOBO ascent of Mt Moosilauke
    2 1870.8 NH 1534 29.1 SOBO ascent of Mt Madison
    3 2194.0 ME 1515 28.7 Ascending Mt Katahdin
    4 1882.8 NH 1370 26.0 NOBO ascent from Carter Notch
    5 1922.6 ME 1302 24.7 NOBO ascent of Mahoosuc Arm
    6 1836.1 NH 1298 24.6 NOBO ascent of South Twin Mtn
    7 (tie) 1824.9 NH 1266 24.0 NOBO ascent from Franconia Notch
    7 (tie) 1893.5 NH 1266 24.0 SOBO ascent of Mt Moriah
    9 1878.1 NH 1234 23.4 NOBO ascent from Pinkham Notch
    10 1945.7 ME 1229 23.3 SOBO ascent from Sawyer Notch
    11 1946.9 ME 1223 23.2 NOBO ascent from Sawyer Notch
    12 1933.2 ME 1171 22.2 SOBO ascent of Baldplate East Peak
    13 1998.3 ME 1168 22.1 SOBO ascent of Sugarloaf Mtn
    14 2000.8 ME 1167 22.1 NOBO ascent of South Crocker Mtn
    15 2016.6 ME 1142 21.6 SOBO ascent of Bigelow East Peak
    16 1979.9 ME 1117 21.2 NOBO ascent of Saddleback Mtn
    17 (tie) 1801.0 NH 1113 21.1 NOBO ascent of Mt Moosilauke
    17 (tie) 1830.1 NH 1113 21.1 SOBO ascent of Mt Lafayette
    17 (tie) 1881.8 NH 1113 21.1 SOBO ascent from Carter Notch
    20 1817.9 NH 1096 20.8 SOBO ascent to North Kinsman Mtn
    21 1949.5 ME 1090 20.7 NOBO ascent from South Arm Rd
    22 1842.3 NH 1069 20.3 SOBO ascent from Zealand Falls Hut
    23 1815.7 NH 1061 20.1 NOBO ascent of South Kinsman Mtn
    24 1851.5 NH 1049 19.9 NOBO ascent of Webster Cliffs
    25 1596.2 MA 1038 19.7 SOBO ascent from North Adams
    South of Glencliff, NH:
    Rank AT Mile State Elev. Change (ft) Grade (%) Location
    1 1596.2 MA 1038 19.7 SOBO ascent from North Adams
    2 1713.3 VT 1037 19.6 NOBO ascent of Quimby Mtn
    3 1768.9 NH 966 18.3 NOBO ascent of Holt's Ledge
    4 1784.5 NH 959 18.2 SOBO ascent of Mt Cube
    5 1766.5 NH 939 17.8 SOBO ascent of Moose Mtn
    6 1681.7 VT 923 17.5 SOBO ascent to Greenwall Shelter
    7 674.3 VA 919 17.4 SOBO ascent of Kelly Knob
    8 1261.0 PA 918 17.4 NOBO ascent from Lehigh Gap
    9 1259.5 PA 912 17.3 SOBO ascent from Lehigh Gap
    10 1218.7 PA 902 17.1 SOBO ascent from Port Clinton
    11 633.9 VA 885 16.8 SOBO ascent from Pearisburg
    12 (tie) 288.6 NC/TN 884 16.7 SOBO ascent from Allen Gap
    12 (tie) 671.8 VA 884 16.7 NOBO ascent of Kelly Knob
    14 1776.4 NH 874 16.6 NOBO ascent of Smarts Mtn
    15 (tie) 52.6 GA 863 16.4 NOBO ascent from Unicoi Gap
    15 (tie) 659.6 VA 863 16.4 NOBO ascent to Bailey Gap Shelter
    17 1773.6 NH 859 16.3 NOBO ascent from Lyme-Dorchester Rd
    18 758.8 VA 855 16.2 NOBO ascent from Jennings Creek
    19 800.5 VA 854 16.2 SOBO ascent from Pedlar River
    20 830.4 VA 843 16.0 SOBO ascent of The Priest
    By State:
    State AT Mile Elev. Change (ft) Grade (%) Location
    GA 52.6 863 16.4 NOBO ascent from Unicoi Gap
    NC 141.5 835 15.8 NOBO ascent from the NOC
    NC/TN 288.6 880 16.7 SOBO ascent from Allen Gap
    TN 423.0 818 15.5 NOBO ascent of Pond Mtn
    VA/WV 674.3 919 17.4 SOBO ascent of Kelly Knob
    MD 1030.2 606 11.5 NOBO ascent from Weverton Rd
    PA 1261.0 918 17.4 NOBO ascent from Lehigh Gap
    NJ 1360.8 786 14.9 NOBO ascent of Wawayanda Mtn
    NY 1406.6 791 15.0 SOBO ascent of Bear Mtn
    CT 1471.6 766 14.5 SOBO ascent from Kent/Rt 341
    MA 1596.2 1038 19.7 SOBO ascent from North Adams
    VT 1713.3 1037 19.6 NOBO ascent of Quimby Mtn
    NH 1805.4 1562 29.6 SOBO ascent of Mt Moosilauke
    ME 2194.0 1515 28.7 Ascending Mt Katahdin

  3. #43
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    On my Oct/Nov sobo from Bennington > DWG, I was surprised to see so many straight up rock walls to climb, almost a few in every state, most were not long, but they were technical and a fun challenge!!
    Take Time to Watch the Trees Dance with The Wind........Then Join In........

  4. #44
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    Default Please send me the data.

    Quote Originally Posted by LittleRock View Post
    I just sorted my AT elevation profile data by % grade and thought folks might be interested to know which places were the steepest. This is based on the most recent GPS track and mileage from the ATC, with elevations pulled from the USGS National Elevation Database at every 0.1 mile interval. Note: Some climbs make the list multiple times but only the steepest 0.1 mile segment is listed. If the 2nd steepest part of the climb would make the list I added an (x2).

    Overall:
    Rank AT Mile State Grade (%) Location
    1 1852.5 NH 48.9 NOBO ascent of Webster Cliffs
    2 2194.9 ME 45.6 NOBO ascent of Mt Katahdin (x2)
    3 1883.0 NH 43.2 NOBO ascent from Carter Notch
    4 1947.4 ME 43.0 NOBO ascent of Moody Mtn
    5 (tie) 1871.2 NH 41.5 SOBO ascent of Mt Madison
    5 (tie) 1878.1 NH 41.5 NOBO ascent of Wildcat Mtn (x2)
    7 2001.1 ME 41.1 NOBO ascent of South Crocker Mtn
    8 1833.1 NH 40.3 NOBO ascent of Mt Garfield
    9 1949.6 ME 39.8 NOBO ascent from South Arm Rd
    10 1476.9 CT 38.6 SOBO ascent to St. John's Ledges
    Southbound (since 8/10 of the overall list are northbound):

    Rank AT Mile State Grade (%) Location
    1 1871.2 NH 41.5 SOBO ascent of Mt Madison (x2)
    2 1476.9 CT 38.6 SOBO ascent to St. John's Ledges
    3 (tie) 1885.1 NH 38.4 SOBO ascent from Zeta Pass (x2)
    3 (tie) 1998.9 ME 38.4 SOBO ascent of Sugarloaf Mtn
    5 1920.9 ME 37.9 SOBO ascent from Mahoosuc Notch
    6 1882.0 NH 36.9 SOBO ascent from Carter Notch
    7 (tie) 1219.6 PA 35.2 SOBO ascent from Port Clinton
    7 (tie) 1805.7 NH 35.2 SOBO ascent of Mt Moosilauke
    9 132.7 NC 35.0 SOBO ascent from the NOC
    10 (tie) 1819.2 NH 34.1 SOBO ascent of North Kinsman Mtn
    10 (tie) 1961.2 ME 34.1 SOBO ascent of Bemis Mtn
    South of NH (Since 9/10 of the overall list are in NH and ME):
    Rank AT Mile State Grade (%) Location
    1 1476.9 CT 38.6 SOBO ascent to St. John's Ledges
    2 99.6 NC 35.4 NOBO ascent of Albert Mtn
    3 1219.6 PA 35.2 SOBO ascent from Port Clinton
    4 132.7 NC 35.0 SOBO ascent from the NOC
    5 1512.3 CT 33.9 SOBO ascent of Bear Mtn (x2)
    6 1689.9 VT 33.1 NOBO ascent from Clarendon Gorge
    7 78.6 NC 33.0 NOBO ascent from Bly Gap
    8 1261.6 PA 32.4 NOBO ascent from Lehigh Gap
    9 (tie) 152.0 NC 31.6 NOBO ascent from Sweetwater Gap
    9 (tie) 1601.2 MA 31.6 NOBO ascent to the MA/VT state line

    By State (since 7/14 states don't appear on any of the lists above):
    State AT Mile Grade (%) Location
    GA 19.1 28.4 SOBO ascent of Ramrock Mtn
    NC 99.6 35.4 NOBO ascent of Albert Mtn
    NC/TN 184.8 31.4 NOBO ascent of Rocky Top
    TN 421.4 29.0 SOBO ascent from Laurel Falls
    VA/WV 798.2 29.2 SOBO ascent of Bluff Mtn
    MD 1064.5 26.3 SOBO ascent to High Rock
    PA 1219.6 35.2 SOBO ascent from Port Clinton
    NJ 1354.6 30.1 NOBO ascent of Pochuck Mtn
    NY 1387.4 30.3 SOBO ascent of Agony Grind
    CT 1476.9 38.6 SOBO ascent to St. John's Ledges
    MA 1601.2 31.6 NOBO ascent to the MA/VT state line
    VT 1689.9 33.1 NOBO ascent from Clarendon Gorge
    NH 1852.5 48.9 NOBO ascent of Webster Cliffs
    ME 2194.9 45.6 NOBO ascent of Mt Katahdin

    I love that you have done this! Where can I get the elevations along the AT in excel along with the mileage numbers so I can crunch some data too!

    I'd like to do something like this:
    START
    Rock Gap 105.8 3732 0 3732
    USFS 67 (Rock Gap) 105.9 3738 6 3738
    Wallace Gap 106.5 3727 11 3749
    Winding Stair Gap 109.6 3690 37 3786
    Moore Creek 110.4 4011 321 4107
    Swinging Lick Gap 110.7 4100 89 4196
    Panther Gap 111.6 4480 380 4576
    Big Stamp 113.1 4350 130 4706
    Snowbird Gap Shelter 113.8 4769 419 5125
    Siler Bald 114.2 5001 232 1625 5357 8.4
    END


    Please send me a link to the raw data - I typed this in myself, I'd like to do it for the whole trip.

    Thanks,
    Ron
    ///

  5. #45
    Some days, it's not worth chewing through the restraints.
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    Quote Originally Posted by CalebJ View Post
    Something doesn't make sense... Those grade percentages are off the charts steep.
    I don't think they're off the charts at all. A standard staircase has a 7" rise for an 11" run... a 64% grade.

  6. #46

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    Quote Originally Posted by peakbagger View Post
    Webster Cliffs may be steep but its well built trail with lots of steps and mini switchbacks. Its near the road and an AMC facility so its gets a lot of attention with respect to trail construction. Compare it Mahoosuc Arm with its eroded out trailbed in spots where a hiker needs to climb up roots and I will take Webster Cliffs anytime.

    I missed out on the non closed Fire Wardens trail up the east side of Mt Speck in Grafton Notch, it was a long route of the AT, it was a eroded trench, in spots reportedly 10 feet deep that became a drainage further accelerating the erosion. The reroute that has been in place for 40 plus years is a great piece of work, mostly stone staircases and switchbacks.
    100% concur on this. I remember both coming down Mahoosuc Arm and up Fulling Mtn as much tougher than up Madison or down Webster. And just the general premise that trailbed conditions are pretty key.

  7. #47
    Registered User LittleRock's Avatar
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    Quote Originally Posted by rvawebguy View Post
    I love that you have done this! Where can I get the elevations along the AT in excel along with the mileage numbers so I can crunch some data too!
    I'd like to do something like this:
    START
    Rock Gap 105.8 3732 0 3732
    USFS 67 (Rock Gap) 105.9 3738 6 3738
    Wallace Gap 106.5 3727 11 3749
    Winding Stair Gap 109.6 3690 37 3786
    Moore Creek 110.4 4011 321 4107
    Swinging Lick Gap 110.7 4100 89 4196
    Panther Gap 111.6 4480 380 4576
    Big Stamp 113.1 4350 130 4706
    Snowbird Gap Shelter 113.8 4769 419 5125
    Siler Bald 114.2 5001 232 1625 5357 8.4
    END


    Please send me a link to the raw data - I typed this in myself, I'd like to do it for the whole trip.
    Thanks,Ron
    Try this out: https://bentwells.shinyapps.io/atdata/

  8. #48

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    Quote Originally Posted by Deadeye View Post
    I don't think they're off the charts at all. A standard staircase has a 7" rise for an 11" run... a 64% grade.
    Not so, you are reading the obtuse side of the angle. I have built a lot of stairs. 7"x11" = 32.47 degrees, google that. (just say'in)

  9. #49

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    Quote Originally Posted by LittleRock View Post

    That is pretty fascinating.

  10. #50

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    Quote Originally Posted by psyculman View Post
    Not so, you are reading the obtuse side of the angle. I have built a lot of stairs. 7"x11" = 32.47 degrees, google that. (just say'in)
    Here is a link on that topic. https://www.calculator.net/right-tri...v=&x=Calculate

  11. #51

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    Also, from having run several “Hustle up the Hancock” races, there is a huge difference between 1 flight of stairs and 90 of them. Yes, Albert Mt, St John Ledges and the Agony Grind are tough, but at the top you huff and puff for a few minutes and move on. Wildcat D or the SOBO climb out of NOC, you take a longer breather and you sleep pretty hard that night.

  12. #52
    Some days, it's not worth chewing through the restraints.
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    Quote Originally Posted by psyculman View Post
    Not so, you are reading the obtuse side of the angle. I have built a lot of stairs. 7"x11" = 32.47 degrees, google that. (just say'in)
    you're correctly measuring the grade in degrees, but the OP measured the grade as a percentage. a 7" rise on 11" run expressed in percent is (7/11)x100 or 63.6%

  13. #53
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    [QUOTE=Deadeye;2304057]you're correctly measuring the grade in degrees, but the OP measured the grade as a percentage. a 7" rise on 11" run expressed in percent is (7/11)x100 or 63.6%[/QUOTE}

    Deadeye you have correctly IMO calculated the grade using the horizontal run. The last time I checked the OP calculated using the angled run of trail not the horizontal run. (However this seems to be more popular.) For the staircase example this would be the length of hypotenuse, The angled run would equal the sqrt( (7x7) + (11x11)) =13.0 rather than 11. Y'all can do the rest.

  14. #54

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    [QUOTE=Daybreak;2304058]
    Quote Originally Posted by Deadeye View Post
    you're correctly measuring the grade in degrees, but the OP measured the grade as a percentage. a 7" rise on 11" run expressed in percent is (7/11)x100 or 63.6%[/QUOTE}

    Deadeye you have correctly IMO calculated the grade using the horizontal run. The last time I checked the OP calculated using the angled run of trail not the horizontal run. (However this seems to be more popular.) For the staircase example this would be the length of hypotenuse, The angled run would equal the sqrt( (7x7) + (11x11)) =13.0 rather than 11. Y'all can do the rest.
    Point taken, thank you.

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