Stock ImageLongmont Farmers Market (Saturday)
Boulder County Fairgrounds · Longmont
Sat, Oct 17
Longmont, CO
Friday, December 11, 2026 through Sunday, December 13, 2026
Gem, Mineral, Rock & Jewelry Shows
Rocks & Rails Mineral, Gem, & Model Train Show/Expo
Boulder County Fairgrounds · Longmont, CO
Rocks & Rails Mineral, Gem, & Model Train Show/Expo takes place Friday, December 11, 2026 through Sunday, December 13, 2026 at Boulder County Fairgrounds, 9595 Nelson Rd, Longmont, CO 80501, Longmont, CO. Admission is not listed. Source verified; listing updated Oct 12, 2026.
When
- Date
- As listed
- “12/11/2026 - 12/13/2026”
Where
- Venue
- Boulder County Fairgrounds
- Address
- 9595 Nelson Rd, Longmont, CO 80501 · Longmont, CO — Map
- Parking
- Not listed — confirm parking with the venue.
- Access
- Not listed — contact the venue about your access needs.
Admission
- Price
- Not listed — check the official event source before attending.
- Age or family guidance
- Not listed — check the organizer's age restrictions and children's admission rules.
Contact
- Organizer
- Flatirons Mineral Club
- Website
- flatironsmineralclub.org
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