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What is the 25-Mile Isolation List?
Just as 2000' is an important prominence threshold and 14000' an important elevation threshold, 25 miles is the magic number that gives a peak a spot on an isolation list. This page contains those peaks with 25miles of isolation which are in the U.S. State of Oregon. But what is isolation anyway? Isolation is how far a peak is from the nearest higher one. Understandably, isolated peaks are often also high in elevation, are very topographically prominent, or, in some cases, both. Oregon doesn't necessarily follow this rule, however, with 1 mountain as low as 2000' and several more less than 7000' in elevation, and 3 peaks with less than 2000' of prominence. It should be said that in these peaks' defense, they are, of course, a regional highpoint, or else they wouldn't be here.
Contained below is a table containing the peak's name--which has a hyperlink to the peak page--as well as its isolation, elevation, and topographical prominence. So, without further ado, the Oregon isolation list.
The Oregon 25-Mile Isolation List
Data taken from the Peakbagger page and the Oregon 2KPs page. Peaks without links have no SP page.
| OR Rank | Peak Name | Isol. (Mi.) | Elev. (Ft.) | Prom. (Ft.) |
| 1 | Sacagawea Peak | 125.5 | 9,838 | 6,388 |
| 2 | Steens Mountain | 124.7 | 9,733 | 4,373 |
| 3 | Mount McLoughlin | 69.5 | 9,495 | 4,455 |
| 4 | Rogers Peak | 60.8 | 3,706 | 3,034 |
| 5 | Mount Hood | 57.3 | 11,239 | 7,679 |
| 6 | Mount Thielsen | 50.4 | 9,182 | 3,342 |
| 7 | Marys Peak | 48.6 | 4,097 | 3,357 |
| 8 | Mount Jefferson | 48.1 | 10,497 | 5,777 |
| 9 | Strawberry Mountain | 46.1 | 9,040 | 4,080 |
| 10 | Lookout Mountain | 45.8 | 6,926 | 2,426 |
| 11 | Crane Mountain | 44.4 | 8,456 | 2,336 |
| 12 | Rock Creek Butte | 43.4 | 9,106 | 4,466 |
| 13 | Gearhart Mountain | 40.8 | 8,370 | 3,430 |
| 14 | South Sister | 39.4 | 10,358 | 5,588 |
| 15 | Brandy Peak | 33.7 | 5,298 | 3,618 |
| 16 | Black Mountain | 33 | 5,932 | 1,772 |
| 17 | Yamsay Mountain | 33 | 8,196 | 3,176 |
| 18 | King Mountain | 31 | 5,265 | 2,185 |
| 19 | Mount Ashland | 30.4 | 7,532 | 3,132 |
| 20 | Paulina Peak | 28.9 | 7,984 | 3,214 |
| 21 | Wagontire Mountain | 28.7 | 6,513 | 1,778 |
| 22 | Pueblo Mountain | 28.3 | 8,635 | 3,035 |
| 23 | Laurel Mountain | 28.2 | 3,589 | 2,829 |
| 24 | Snow Mountain | 28 | 7,163 | 2,123 |
| 25 | Diamond Peak | 25.7 | 8,750 | 3,104 |
| 26 | Juniper Mountain | 25.7 | 6,679 | 1,441 |
| 27 | Roman Nose Mountain | 25.7 | 2,840 | 2,096 |
Additions & Corrections
If there are any errors--which there may well be, as I have never lived in Oregon--feel free to contact me.
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