What Is The 25-Mile Isolation Peak List?In a mountainous and hilly state such as Washington, it might be difficult to imagine peaks being in "isolation" of each other. However, out of the thousands of different peaks and named highpoints in Washington, only 18 peaks each have true "isolation" of at least a 25-mile radius from a nearest higher point. Most of those nearest higher points are actual mountain summits, although some are named highpoints on volcanoes. The purpose of including this list on SummitPost is to introduce an obscure peakbagging list to those unaware of its existence, as well as address discrepancies and differences within the list when compared with other resources.
Some of the peaks on the 25-Mile Isolation List might be obvious, while other peaks are less obvious. Exactly half of the peaks listed are county highpoints. Perhaps not surprisingly, each of Washington's five active stratovolcanoes are on the list. In addition, 16 of the 18 peaks have over 2000' of prominence, and 17 of the 18 peaks are in the Top 200 for prominence within Washington. However, despite many high elevation peaks located within Washington, which is also bordered by other mountainous areas (Oregon, Idaho, British Columbia), several low-elevation peaks are found on the 25-Mile Isolation List.
The prominence or elevation of a peak does not necessarily affect that mountain's rank on the Isolation List. The area a particular mountain is located in greatly affects its ranking. In example, Jump Off Joe easily has the lowest elevation and least prominence on the list, yet it is more isolated from a higher peak than much-higher and more-prominent Mount Bonaparte. This is because Jump Off Joe is located in a fairly flat area of Washington but Mount Bonaparte is located in a mountainous area of Washington.
Most of the photos attached to this page are from long distances and/or wide angles. This is to help show the isolation of each peak on the list.
List Discrepancies And DifferencesThere are several discrepancies on the general 25-Mile Isolation List, depending on the resource being used, although no peaks are added or removed from the list from any of the discrepancies. The first discrepancy is that some people consider the nearest higher point to Mount Saint Helens as being the Skamania County Highpoint located on the west slope of Mount Adams. Although that is an important landmark by virtue of it being a county highpoint, it is actually a point on a slope rather than the next-highest summit to Mount Saint Helens. That honor belongs to The Pinnacle, which is a named highpoint/sub-summit on the western side of Mount Adams.
The second discrepancy is that multiple nearest higher points on the list are sub-peaks of volcanoes (as shown in the example above). Although these points are named highpoints, they are not considered stand-alone "mountains". As a result, some people might prefer the use of nearest higher mountain to be used rather than nearest higher point (also referred to as nearest higher neighbor, or NHN). Regardless, it would only change the isolation mileage slightly and not affect the placement of any peaks on the 25-Mile Isolation List.
The third discrepancy is related to both discrepancies listed above. Some people consider the isolation of a peak as being determined by nearest higher ground (NHG) criteria rather than nearest higher summit. In peakbagging terminology, that true nearest higher ground is known as the Isolation Limit Point (ILP). That method would be more accurate in terms of elevation and isolation, but also much more difficult to distinguish an exact higher point of reference on a given slope. Some people prefer summits as nearest higher points, and some people prefer true coordinates on slopes. Both can be considered correct criteria, in their own ways.
Greg Slayden was the first peakbagger to create the Washington 25-Mile Isolation List, and an expanded list was later adopted by John Kirk. There are several differences between the lists, leading to the discrepancies mentioned earlier. Both lists provide good resources. Kirk's list shows two additional peaks with at least 25-Mile radiuses of isolation, Larch Mountain and Wahatis Peak. This is because each of those two peaks would meet the 25-Mile criteria if the nearest higher ground is an actual summit rather than a slope on a peak.
25-Mile Isolation Peaks Of WashingtonFor people referencing this SummitPost page, the following 25-Mile Isolation List is compiled in a manner that tries to remain consistent throughout the list but also is simple for the general reader to understand. Although the true isolation distance for each peak is listed, each nearest higher point listed for each isolation peak is the actual named summit/point containing the true ILP. The purpose of this name identification is to ease topographical familiarity for each location being recognized as a nearest higher point. As a result, sub-peaks of volcanoes are included as nearest higher points where applicable. Also included are John Kirk's additional two peaks which would be candidates for this 25-Mile Isolation List if using summits rather than slopes as nearest higher ground.
|RANK||PEAK NAME||ISOLATION (MILES)||PEAK ELEVATION||DIRECTION TO NEAREST HIGHER POINT||NEAREST HIGHER POINT|
|1||MOUNT RAINIER||731.2||14411'||SOUTH-SOUTHEAST||MOUNT WHITNEY|
|2||MOUNT BAKER||131.5||10781'||SOUTH||LIBERTY CAP (on Mount Rainier)|
|3||MOUNT OLYMPUS||108.0||7969'||NORTHEAST||SEWARD PEAK|
|4||GLACIER PEAK||56.0||10520'||NORTHWEST||MOUNT BAKER|
|5||OREGON BUTTE||46.5||6387'||SOUTH||BALD KNOB|
|6||MOUNT ADAMS||45.8||12276'||NORTH-NORTHWEST||POINT SUCCESS (on Mount Rainier)|
|7||MOUNT STUART||44.5||9415'||NORTH-NORTHWEST||DISAPPOINTMENT PEAK (on Glacier Peak)|
|8||BOISTFORT PEAK||34.5||3120'||EAST-SOUTHEAST||SIGNAL MOUNTAIN|
|9||CALISPELL PEAK||33.6||6855'||NORTH||ABERCROMBIE MOUNTAIN|
|10||MOUNT SPOKANE||33.2||5883'||NORTHEAST||BALD MOUNTAIN (in Bonner County, ID)|
|11||MOUNT SAINT HELENS||32.0||8333'||EAST||THE PINNACLE (on Mount Adams)|
|12||INDIAN ROCK||30.4||5850'||WEST-NORTHWEST||LITTLE MOUNT ADAMS|
|13||COPPER BUTTE||30.3||7140'||WEST||MOUNT BONAPARTE|
|14||HOG RANCH BUTTES||29.5||4216'||WEST-NORTHWEST||RATTLER BENCHMARK|
|15||MOSES MOUNTAIN||28.6||6774'||EAST-NORTHEAST||BALD MOUNTAIN (in Ferry County, WA)|
|16||JUMP OFF JOE||27.6||2200'||NORTHWEST||RATTLESNAKE HILLS LOOKOUT|
|17||MOUNT BONAPARTE||26.7||7257'||NORTH-NORTHWEST||BALDY MOUNTAIN|
|18||HUCKLEBERRY MOUNTAIN||25.4||5825'||EAST-NORTHEAST||LITTLE CALISPELL PEAK|
|RANK||PEAK NAME||ISOLATION (MILES)||PEAK ELEVATION||DIRECTION TO NEAREST HIGHER POINT||NEAREST HIGHER POINT|
|19||LARCH MOUNTAIN||24.8||2660'||NORTH-NORTHWEST||SOUTH MOUNTAIN|
|20||WAHATIS PEAK||21.9||2692'||WEST-SOUTHWEST||HOG RANCH BUTTES|
-> The bottom two peaks listed, Larch Mountain and Wahatis Peak, are shown in italics because they only make the 25-Mile Isolation List if referencing a summit rather than a slope as a nearest higher point. If the criteria was for summits only, rather than strict ILP, then Larch Mountain would have 25.0 miles of isolation from its nearest-higher point and Wahatis Peak would have 27.3 miles of isolation from its nearest-higher point.
-> For any volcanic sub-peak listed as a nearest higher point, I listed the volcano parent name in parentheses.
-> There are two nearest higher points on the list named "Bald Mountain". However, these are two different peaks that happen to have the same peak name. I have indicated their respective county locations in parentheses.
-> No SummitPost pages currently exist for Indian Rock and Hog Ranch Buttes. It might be best to have it stay that way, so as not to complicate future potential summiters of those peaks. Indian Rock is most commonly accessed via a boundary road along a reservation that is typically closed to non-tribal members, and Hog Ranch Buttes is located within a military facility. If wanting to summit either of these peaks but seeking more information about the access issues, please feel free to contact me for specific details. We ask that SummitPost pages are not created for these two peaks, so as not to potentially trigger future access restrictions by the respective landowners.
Why Stop At 25-Mile Radius For Isolation?Using the criteria listed above, the 25-Mile Isolation List is a quality list of isolation peaks in Washington. With few discrepancies, the list is easy to read, follow, and attempt.
Two common questions are asked about this peakbagging category:
-> Why not expand the Washington Isolation List by lowering the isolation radius criteria?
-> Why not have a "Top 100" list for most isolated peaks in Washington?
Quite simply, the lower an isolation radius distance the more difficult it becomes to compile the list. John Kirk actually compiled a "Top 100" list for isolated peaks in Washington. However, his list is filled with many inaccuracies and inconsistencies, and is not recommended as a resource of a "true" Top 100 list. Once beyond the 25-mile isolation radius, his list becomes much more ambiguous and unreliable. Some nearest higher points listed are defined as actual summits while others are actual ILPs, and in many cases (unlike those in the 25-mile radius criteria) those tend to be in completely different areas and directions. There are also multiple peaks, especially in eastern Washington where a lot of broad terrain exists, where determining the nearest higher ground for certain peaks can become easily questioned and disputed. Also, at least one of the true "Top 100" isolation peaks is completely inaccessible to the public due to a patrolled military zone.
A 25-mile isolation radius tends to be a good checkpoint for many people due to the overall high number of peaks in the state, the long distance (25 miles or more) being considered, and the limited number of completers and near-completers of just that short list.
On March 2, 2011, local peakbagger Martin Shetter created a sample list of the 75 most isolated peaks/points in Washington using the "nearest higher ground" (NHG) criteria to help ensure true isolation accuracy. All of the peaks/points shown on the Shetter List have more than 10 miles of isolation. There are a few discrepancies on the list to resolve, but this is perhaps the least ambiguous or contentious isolation list to date. Several people are reviewing the list, double-checking for inaccuracies. Once that list has been cleaned-up, it will likely be included on this page.
Completers And Near-Completers
The following people have reached the following achievements beyond the 25-mile isolation criteria, using the Shetter list as a reference:
-> Martin Shetter became the first person to complete the 50 most isolated points in Washington, completing that threshold on May 7, 2011, at Hanning Butte.
-> Paul Klenke only needs to summit North Scoop Mountain to complete the 50 most isolated points in Washington.
The following people have completed the Washington 25-Mile Isolation List:
-> Paul Klenke and John Roper simultaneously completed the list on November 30, 2008, at Hog Ranch Buttes.
-> Martin Shetter completed the list on April 3, 2011, at Jump Off Joe.
-> Bob Bolton completed the list on June 18, 2011, at Jump Off Joe.
-> Edward Earl completed the list on July 26, 2011, at Jump Off Joe.
-> Craig Willis completed the list on June 20, 2012, at Mount Baker.
-> Paul Michelson completed the list on October 19, 2013, at Jump Off Joe.
The following people have nearly completed the Washington 25-Mile Isolation List:
17 Out Of 18 Completed:
-> Ken Jones only needs to summit Oregon Butte to complete the list.
16 Out Of 18 Completed:
-> Andy Boos and John Stolk each need to summit Hog Ranch Buttes and Jump Off Joe to complete the list.
External LinksMartin Shetter has a website containing a sample list of the 75 most isolated peaks in Washington. Some of the peaks are disputed, but most of the peaks listed are correct. The website also contains a Washington map showing each peak location for reference purposes.
Peakbagger.com has the 25-Mile Isolation Peak List on its website, although it uses summit-to-summit criteria rather than NHG.