| Peak | Date | Route | Reason |
| Mount Lindsey | May 2001 | Northwest Ridge | Could not find trail in snow |
| Mount Lindsey | Jun 2001 | Northwest Ridge | Routefinding: could not find entry to upper basin |
| Mount Princeton | Feb 2002 | East Ridge | Exhaustion 200' from summit |
| La Plata Peak | Apr 2002 | Northwest Slopes | Avalanche danger on slope |
| Mount Shavano | Apr 2002 | East Slopes | Forceful snow and wind storm |
| Mount Columbia | Nov 2002 | West Ridge | Not enough time: postholing below treeline in snowshoes |
| Crestone Peak | Nov 2002 | South Face | Snowstorm and probable loose snow in couloir |
| Sunshine Peak | Dec 2002 | East Ridge | Not enough time: postholing above treeline |
| Mount Evans | Feb 2003 | Mount Evans Road | Forceful snow and wind storm |
| Handies Peak | May 2003 | East Slopes | Chest-deep postholing at 12,000' level |