Parent Lineage
Castle Peak: 4,621' WA 521' Rise
| Depth | Parent | Elevation | Saddle | Prominence | State |
| 1 | Spud Mountain | 4,740' | 3,940' | 800' | WA |
| 2 | Saint Helens, Mount | 8,330' | 3,735' | 4,595' | WA |
| 3 | Adams, Mount | 12,278' | 4,145' | 8,133' | WA |
| 4 | Rainier, Mount | 14,405' | 1,174' | 13,231' | WA |
| 5 | Massive, Mount | 14,427' | 12,444' | 1,983' | CO |
| 6 | Elbert, Mount | 14,439' | 5,346' | 9,093' | CO |
| 7 | Whitney, Mount | 14,500' | 4,423' | 10,077' | CA |
Green = More Prominent Parent
Immediate Children:
| # | Child | Elevation | Prominence | State |
| 1 | 4562 | 4,562' | 542' | WA |
| 2 | 4353 | 4,353' | 333' | WA |
| 3 | 2982 | 2,982' | 402' | WA |
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