Show List Using Metric Units

Peak Pairs, First Ascents, and Unique Peaks for Robert Terwilliger

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 Robert Terwilliger has climbed both.

PeakElev-ftLocationAscent DateProm-ft
Cerro Mercedario22037ArgentinaUnknown11010
Nevado Huantsan20896PeruUnknown5312


Most Prominent Unique Pair of Peaks Climbed

The two most prominent peaks where only Robert Terwilliger has climbed both.

PeakProm-ftLocationAscent DateElev-ft
Cerro Fitzroy6401Chile/ArgentinaUnknown11171


Most Isolated Unique Pair of Peaks Climbed

The two most isolated peaks where only Robert Terwilliger has climbed both.

PeakIso-miLocationAscent DateElev-ft
Mount Logan386.98Canada-YTUnknown19541
Nevado Huantsan32.63PeruUnknown20896


First Ascents by Robert Terwilliger

There are no first ascents for this climber.


All Peaks Climbed only by Robert Terwilliger

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

PeakElev-ftLocationAscent DateProm-ft
Nevado Champará18816PeruUnknown4951
Nevado Santa Cruz20476PeruUnknown4892
Nevados de Caraz19619PeruUnknown2099
Nevado San Julián17474PeruUnknown1660



  • 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.

Copyright © 1987-2023 by All Rights Reserved. Questions/Comments/Corrections? See the Contact Page Terms of Service