Pumpkin Pie Days is the St. Vrain Historical Society’s fall antique market, and the 2026 edition runs Saturday and Sunday, Oct. 10-11, in the Exhibit Building at the Boulder County Fairgrounds, 9595 Nelson Rd. in Longmont. More than 80 vendors sell antiques and collectibles. Hours are 10 a.m. to 5 p.m. Saturday (society members get in at 9:30) and 11 a.m. to 4 p.m. Sunday.
Admission is $11, or $10 if you pay cash, and children under 12 are free. There are no advance tickets; everyone pays at the door. The market is a fundraiser for the society’s preservation and education work in the St. Vrain Valley.
Know before you go
- Boulder County Fairgrounds, 9595 Nelson Rd., Longmont; indoors, so weather is not a factor.
- Bring cash for the $10 rate and for vendors who prefer it.
- Longmont’s Longmont Museum reopens with a free celebration the following Saturday, Oct. 17.
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