| Mount Harwood, Mount San Antonio | 12 June 1966 | Ben Neffson |
| Mount Harwood | 6 October 1990 | Joe Young |
| Mount Harwood, Mount San Antonio | 6 July 1991 | Luella Fickle |
| Mount Harwood | 5 October 1991 | Joe Young |
| Mount Harwood | 3 October 1992 (via Harwood Ridge) | Bill T Russell |
| Mount San Antonio, Mount Harwood | 3 October 1992 | Patty Kline |
| Harwood Ridge, Thunder Ridge, Mount Harwood, Thunder Mountain | 2 October 1993 | Bill T Russell |
| Mount San Antonio, Mount Harwood, Thunder Mountain, Telegraph Peak, Timber Mountain | 12 July 1998 | Dave Zalewski |
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