Parent Lineage
Ontario Peak: 8,693' CA 1,039' Rise
| Depth | Parent | Elevation | Saddle | Prominence | State |
| 1 | Cucamonga Peak | 8,859' | 7,580' | 1,279' | CA |
| 2 | Telegraph Peak | 8,985' | 7,802' | 1,183' | CA |
| 3 | San Antonio, Mount | 10,068' | 3,821' | 6,247' | CA |
| 4 | Ten Thousand Foot Ridge | 10,091' | 9,780' | 311' | CA |
| 5 | Lake Peak | 10,178' | 9,834' | 344' | CA |
| 6 | San Gorgonio Mountain | 11,501' | 3,218' | 8,283' | CA |
| 7 | Olancha Peak | 12,123' | 9,020' | 3,103' | CA |
| 8 | Cirque Peak | 12,900' | 11,980' | 920' | CA |
| 9 | Langley, Mount | 14,025' | 12,828' | 1,197' | CA |
| 10 | Whitney, Mount | 14,494' | 4,415' | 10,079' | CA |
Green = More Prominent Parent
Immediate Children:
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