Parent Lineage
Preston Peak: 7,314' CA 2,579' Rise
| Depth | Parent | Elevation | Saddle | Prominence | State |
| 1 | Observation Peak | 7,340' | 7,020' | 320' | OR |
| 2 | Dutchman Peak | 7,417' | 5,860' | 1,557' | OR |
| 3 | Ashland, Mount | 7,532' | 4,380' | 3,152' | OR |
| 4 | Aspen Butte | 8,212' | 5,291' | 2,921' | OR |
| 5 | McLoughlin, Mount | 9,495' | 5,020' | 4,475' | OR |
| 6 | South Sister | 10,362' | 4,768' | 5,594' | OR |
| 7 | Lassen Peak | 10,464' | 5,215' | 5,249' | CA |
| 8 | Highland Peak | 10,939' | 8,400' | 2,539' | CA |
| 9 | Stanislaus Peak | 11,231' | 10,451' | 780' | CA |
| 10 | Sonora Peak | 11,463' | 9,620' | 1,843' | CA |
| 11 | Leavitt Peak | 11,572' | 9,527' | 2,045' | CA |
| 12 | Tower Peak | 11,754' | 9,579' | 2,175' | CA |
| 13 | Eagle Peak | 11,851' | 9,504' | 2,347' | CA |
| 14 | Matterhorn Peak | 12,301' | 10,668' | 1,633' | CA |
| 15 | Twin Peaks | 12,325' | 10,183' | 2,142' | CA |
| 16 | Excelsior Mountain | 12,445' | 11,200' | 1,245' | CA |
| 17 | Conness, Mount | 12,594' | 9,940' | 2,654' | CA |
| 18 | Dana, Mount | 13,060' | 10,603' | 2,457' | CA |
| 19 | Lyell, Mount | 13,118' | 11,170' | 1,948' | CA |
| 20 | Ritter, Mount | 13,164' | 9,171' | 3,993' | CA |
| 21 | Red Slate Mountain | 13,170' | 11,431' | 1,739' | CA |
| 22 | "Ruby Peak" | 13,211' | 12,766' | 445' | CA |
| 23 | Mills, Mount | 13,471' | 13,016' | 455' | CA |
| 24 | Abbot, Mount | 13,720' | 11,121' | 2,599' | CA |
| 25 | Humphreys, Mount | 13,993' | 11,417' | 2,576' | CA |
| 26 | North Palisade | 14,251' | 11,351' | 2,900' | CA |
| 27 | Williamson, Mount | 14,380' | 12,660' | 1,720' | CA |
| 28 | Whitney, Mount | 14,500' | 4,423' | 10,077' | CA |
Green = More Prominent Parent
Immediate Children:
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