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Peak Pairs, First Ascents, and Unique Peaks for Derek Percoski

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 Derek Percoski has climbed both.

PeakElev-ftLocationAscent DateProm-ft
Boreas Mountain13082USA-CO2016-09-17923
Borah Peak-North Peak12247USA-ID2020-11-0487


Most Prominent Unique Pair of Peaks Climbed

The two most prominent peaks where only Derek Percoski has climbed both.

PeakProm-ftLocationAscent DateElev-ft
Mount Washington6148USA-NH19936288
Blizzard Mountain1913USA-ID2020-04-149313


Most Isolated Unique Pair of Peaks Climbed

The two most isolated peaks where only Derek Percoski has climbed both.

PeakIso-miLocationAscent DateElev-ft
Mount Washington819.56USA-NH19936288
Blizzard Mountain11.99USA-ID2020-04-149313


First Ascents by Derek Percoski

There are no first ascents for this climber.


All Peaks Climbed only by Derek Percoski

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

PeakElev-ftLocationAscent DateProm-ft
Peak 1145811458USA-ID2020-07-13418



  • 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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