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Peak Pairs, First Ascents, and Unique Peaks for Sean Casserly

Most significant unique peak pairs by key metrics, first ascents, and all uniquely ascended peaks

Highest Unique Pair of Peaks Climbed

The two highest peaks where only Sean Casserly has climbed both.

PeakElev-ftLocationAscent DateProm-ft
Crooks Peak14173USA-CA2018-08-12 c65
Volcán Tajumulco13845Guatemala2018-03-1613058


Most Prominent Unique Pair of Peaks Climbed

The two most prominent peaks where only Sean Casserly has climbed both.

PeakProm-ftLocationAscent DateElev-ft
Hole in the Mountain Peak4849USA-NV2020-09-1911306


Most Isolated Unique Pair of Peaks Climbed

The two most isolated peaks where only Sean Casserly has climbed both.

PeakIso-miLocationAscent DateElev-ft
Ruby Dome94.73USA-NV2017-07-15 a11387


First Ascents by Sean Casserly

There are no first ascents for this climber.


All Peaks Climbed only by Sean Casserly

These peaks have their single logged ascent by Sean Casserly. Of course, it is entirely likely that many non-site users have also climbed these peaks.

PeakElev-ftLocationAscent DateProm-ft
Coon Peak1680USA-CA2018-12-15 c520
Xueshan-South Peak11532Taiwan2019-02-10 c574
Rattlesnake Peak7431USA-CA2020-05-23309
Eisenheimer Peak7500USA-CA2020-05-23426
Rudolph Ridge2940USA-CA2022-01-23 d460
Peak 24652465USA-CA2022-01-23 e331
Peak 29372937USA-CA2022-01-23 f980
San Clemente Ridge2706USA-CA2022-03-13 a586



  • The first three peak pairs on this page show the superlative unique pairs for three key metrics: Elevation, Prominence, and Isolation.
  • Most hikers or climbers that log their ascents on have a number of unique peak pairs--a set of two successfully climbed peaks such that no other registed site user has also climbed both.
  • Since virtually no one can claim to have made the only ascent ever of a peak, these peak pairs are a way to claim some uniqueness--being able to say "I am the only one to ever climb both Peak A and Peak B".
  • Many of a hiker's unique peak pairs will be relatively low, minor, or otherwise insignificant peaks, and therefore climbing both may not be a particularly impressive achievement.
  • So the pairs above represent the most significant of all a climber's unique pairs--the most impressive unique pairs to use as a badge of honor.
  • Mathematically, the pairs listed above maximize the value of the secondary peak in the pair--for example, showing the pair that has the highest elevation for the pair's second-highest peak. Put another way, it shows the two highest-value peaks that only this climber has climbed.
  • The final listing shows the peaks (if any) where the hiker/climber is the only ascender with logged ascents.
  • Of course, all these listings are purely based on the logged climbs in the database, so they should not be taken as completely accurate.

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