Parent Lineage
Sixtysix Hundred Ridge: 6,823' WA 311' Rise
| Depth | Parent | Elevation | Saddle | Prominence | State |
| 1 | Highchair Mountain | 7,016' | 6,380' | 636' | WA |
| 2 | Cradle, The | 7,472' | 5,328' | 2,144' | WA |
| 3 | Ingalls Peak | 7,662' | 6,420' | 1,242' | WA |
| 4 | Stuart, Mount | 9,418' | 4,076' | 5,342' | WA |
| 5 | Glacier Peak | 10,549' | 3,009' | 7,540' | WA |
| 6 | Little Tahoma Peak | 11,142' | 10,292' | 850' | WA |
| 7 | Rainier, Mount | 14,405' | 1,148' | 13,257' | WA |
| 8 | Massive, Mount | 14,427' | 12,444' | 1,983' | CO |
| 9 | Elbert, Mount | 14,439' | 5,346' | 9,093' | CO |
| 10 | Whitney, Mount | 14,500' | 4,423' | 10,077' | CA |
Green = More Prominent Parent
Immediate Children:
| # | Child | Elevation | Prominence | State |
| 1 | 6641 | 6,641' | 381' | WA |
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