Event Details

Date: 14 December 2025

Time: Sun, 10 AM - 5 PM

City: Longmont, CO

Country: United States

Location: Boulder County Fairgrounds Exhibit Building, 9595 Nelson Rd

Location Map

References and Tickets

bouldercounty.gov icon Rocks & Rails - Mineral Show and Model RR Show - Boulder County

Boulder County / Events / Rocks & Rails – Mineral Show and Model RR Show. Loading ... Details. Date: December 14; Time: 10:00 am - 5:00 pm. Event Category ...

rockandmineralshows.com icon Rocks & Rails Mineral, Gem, & Model Train Show/Expo

Rocks & Rails Mineral, Gem, & Model Train Show/Expo, 12/12/2025, Rock & Mineral Shows, 12/14/2025, Longmont, Colorado.

visitlongmont.org icon Rocks & Rails Mineral, Gem, & Model Train Expo - Visit Longmont

Rocks & Rails Mineral, Gem, & Model Train Expo. Dates: 12/12/2025, 12/13/2025, 12/14/2025 ... Enjoy our train, minerals and gem show featuring many vendors ...

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