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Peak Pairs, First Ascents, and Unique Peaks for Pierre-Yves St-Onge

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 Pierre-Yves St-Onge has climbed both.

PeakElev-ftLocationAscent DateProm-ft
Brier Ridge5240USA-VA2017-04-1740
Mount Monroe-West Peak5197USA-NH2018-07-0440


Most Prominent Unique Pair of Peaks Climbed

The two most prominent peaks where only Pierre-Yves St-Onge has climbed both.

PeakProm-ftLocationAscent DateElev-ft
Mount Brandon3051Ireland2019-12-023123
Mont Blanc2398Canada-QC2017-07-283494


Most Isolated Unique Pair of Peaks Climbed

The two most isolated peaks where only Pierre-Yves St-Onge has climbed both.

PeakIso-miLocationAscent DateElev-ft
Montagne du Midi43.43Canada-QC2016-09-103005
Mount Brandon26.69Ireland2019-12-023123


First Ascents by Pierre-Yves St-Onge

There are no first ascents for this climber.


All Peaks Climbed only by Pierre-Yves St-Onge

There are no unique peaks for this climber.



  • 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 calim 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 insingnificant 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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