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Illustration: Visitors admiring a detailed model railway layout with a station and a bridge
Illustration, not a photo of this event.

Model show

Model Train Expo — Boulder Model Railroad Club

  • Run by Boulder Model Railroad Club
  • Boulder County Fairgrounds — Longmont, Colorado, United States

Next: Dec 11–13, 2026

A three-day model train exhibition at the Boulder County Fairgrounds in Longmont, Colorado, presented annually by the Boulder Model Railroad Club.

Updated

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Next edition

Dec 11–13, 2026

Fri Dec 11, Sat Dec 12 and Sun Dec 13, 10 am–5 pm each day. Children 12 and under free. Free parking.

From $5 (as published by the operator)

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About this event

The Model Train Expo is the annual model railroad exhibition of the Boulder Model Railroad Club (BMRC), held at the Boulder County Fairgrounds in Longmont, Colorado. The club describes itself as a club for modelers in all scales, from G to Z, and says it hosts the exhibition each year at the fairgrounds.

The club's poster for the show lists three days of public hours, free parking, food and prizes. The club publishes the show poster on its Expo page and gives an email address for questions.

What to expect

A model railroad exhibition over three days with food and prizes, as listed on the club's poster.

Practical info

Held at the Boulder County Fairgrounds, 9595 Nelson Road, Longmont, Colorado 80501. Parking is free. The club lists separate adult and senior rates, and children 12 and under are free. Questions: info@bmrconline.org.

Where it happens

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Spots and live cams nearby

Where to watch trains within 100 km of Longmont.

Frequently asked questions

Where is the Model Train Expo held?▾
At the Boulder County Fairgrounds, 9595 Nelson Road, Longmont, Colorado.
Who runs it?▾
The Boulder Model Railroad Club, which says its members model in all scales from G to Z.
Do children pay?▾
The club's poster lists kids 12 and under as free.
Is parking free?▾
Yes. The poster lists free parking.
Is food available?▾
The poster lists food and prizes.

Sources

Dates checked on Oct 10, 2026 from the official site: bmrconline.org. Schedules can change — always confirm with the operator before you travel.

Official website: bmrconline.org

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