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Listing information (not an attendee review). Note 1: RetroMania Collectibles Show at Boulder County Fairgrounds Exhibit Building in Longmont, CO on January 23, 2027. Admission: $10 · 11 & under free. Note 2: Calendar-date entry; consult the promoter for full event duration, categories, hours and admission options. Directory source: https://www.cardsnearby.com/card-shows/colorado/retromania-collectibles-show/2027-01-23. Promoter reference: https://www.heritageeventcompany.com/boulder-longmont-retromania-comiccon-2026.html. Checked 2026-11-02.
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Boulder County Fairgrounds Exhibit Building
9595 Nelson Road
Longmont, CO 80501