Brewery Profile

Grossen Bart Brewery

In Longmont’s busy craft beer scene, a visitor to Grossen Bart Brewery finds a grassroots brewery built around range. The tap list can run to as many as 15 options, which gives first-time guests a clear view of the brewery’s broad approach rather than a single narrow specialty. The known lineup spans robust Belgian dubbels, intensely hopped IPAs, and cleaner classic styles, so the first decision is usually how far across the spectrum to go. The setting is described as welcoming, with the beer itself serving as the main draw: a place to compare styles, settle into a familiar favorite, or use a tasting as a way to understand what the brewery does well.

Travelers moving through the Front Range often look for breweries that can satisfy mixed groups: one person wants hops, another wants malt depth, and someone else may be looking for a crisp lager. Grossen Bart fits that kind of stop because its stated strength is versatility. The award-winning Perfect Pilsner is the obvious reference point for drinkers who prefer clean, precise beer, while the Belgian dubbel side of the board points toward richer, darker, malt-driven flavors. IPAs add the hop-forward option many Colorado beer visitors expect to find. Rather than presenting one signature lane, the brewery gives visitors a practical cross-section of familiar craft styles.

For planning purposes, the taproom is the place to confirm the day’s pours, since the exact tap list may not match every past description. The brewery is known for pouring up to 15 taps, but the specific beers available on a given visit should be checked directly. Details such as food service, events, outdoor seating, reservations, family policies, or pet policies are not specified here, so visitors should verify those before making plans around them. As a beer-focused stop in Longmont, it works best for guests who want to spend time with the draft list, ask what is currently pouring, and choose based on style preference rather than assumptions about amenities.

Nestled in the craft beer hub of Longmont, Colorado, Grossen Bart Brewery is a grassroots operation celebrated for its remarkable versatility, pouring up to 15 diverse taps ranging from robust Belgian dubbels to intensely hopped IPAs. They have mastered the classics, too; don't miss their award-winning Perfect Pilsner, a benchmark of crisp, clean brewing excellence. This welcoming spot delivers consistent quality and a flavor for every palate, making it an essential stop on any Front Range beer tour.

2 reviews • Website available

1025 Delaware Ave Unit A, Longmont, Colorado, 80501-6188

Website: http://www.grossenbart.com

Hours: Mon - Thurs: 3 - 9pm Fri - Sat: 1 - 10pm Sun: 1 - 9pm

Popular Beers

A quick look at notable pours currently tied to Grossen Bart Brewery.

Beer Styles at Grossen Bart Brewery

Grossen Bart Brewery brews across a range of styles. The current lineup includes PALE ALE, Pilsner, Oatmeal Stout, Brown Ale, Porter, and Hazy IPA. Specific pours rotate over time — check the taproom board on the day of your visit for what is currently available on tap.

Upcoming Events

Upcoming public events currently attached to this brewery.

  • Luna Fest

    Jun 14, 2026

    Celebrate Luna Fest from June 14 to June 21 with special events and activities at Grossen Bart Brewery. Enjoy a week of festivities and unique beer offerings.

  • Monday Happy Hour at Grossen Bart Brewery (5–7 PM)

    Jun 15, 2026

    Enjoy discounted drinks and a lively atmosphere every Monday evening at Grossen Bart Brewery from 5 to 7 PM.

  • Collin O - Multi-Day Concert Event

    Jun 15, 2026

    Multiple live concert performances by Collin O spanning several days at Grossen Bart Brewery from June 15 to June 21, 2026.

  • Open Mic Night

    Jun 15, 2026

    An evening of live open mic performances from local artists and musicians. Join us for a fun night of music and community.

  • Mug Club Night

    Jun 17, 2026

    A special day for Mug Club members to enjoy exclusive perks and special brews at the brewery.

  • Buried In Lies

    Jun 17, 2026

    Live concert performance by Buried In Lies at Grossen Bart Brewery.

  • LunarScape

    Jun 17, 2026

    Live concert performance by LunarScape at Grossen Bart Brewery.

  • Bingo/Music Bingo

    Jun 18, 2026

    Join us for a fun day of Bingo and Music Bingo from 8 AM to 5 PM at the brewery.

  • Sugar Britches

    Jun 20, 2026

    Live concert performance by Sugar Britches at Grossen Bart Brewery.

  • White Rose Motor Oil

    Jun 20, 2026

    Live concert performance by White Rose Motor Oil at Grossen Bart Brewery.

Frequently Asked Questions

Where is Grossen Bart Brewery located?
Grossen Bart Brewery is located at 1025 Delaware Ave Unit A, Longmont, Colorado, 80501-6188. Use the map and directions on this page to plan your visit.
What are Grossen Bart Brewery's hours?
Current hours are: Mon - Thurs: 3 - 9pm Fri - Sat: 1 - 10pm Sun: 1 - 9pm. Hours can change on holidays and during private events — call ahead if your visit is time-sensitive.
How can I learn more about Grossen Bart Brewery?
Visit http://www.grossenbart.com for the brewery's own information about beers, events, and operations. Beer.Social aggregates public data and visitor-facing details to help with planning a stop.