Sunday, November 1, 2026 closes the three-day All American Collectors Expo at the Douglas County Fairgrounds in Castle Rock. It is also the day daylight saving time typically ends, which means an extra hour of sleep and, more practically, a room full of dealers who are well rested and facing the last session before a long drive home.
Sunday hours run 9:00 AM to 4:00 PM Mountain Time — a seven-hour day, one hour shorter than Saturday, so the closing window arrives sooner than you might expect.
The Douglas County Fairgrounds sits in Castle Rock with straightforward access from I-25 roughly midway between Denver and Colorado Springs, offering extensive free on-site parking.
Play it tactically: arrive by 9:00 AM to revisit anything you flagged, and lead with a specific number rather than asking what something costs. The 2:00 PM to 4:00 PM stretch produces the weekend's best deals.