Ugly Sweater 5k @ Left Hand Brewing Co.

Ugly Sweater 5k @ Left Hand Brewing Co. is a holiday fun run on Saturday, December 5, 2026, at Left Hand Brewing Company, 1265 Boston Avenue in Longmont. It is part of the 2026 Colorado Brewery Running Series, and the 5K starts and ends at the taproom.

Start waves go out at 10:00 AM and 10:30 AM, and the event runs until 1:00 PM. This is an untimed fun run, and walkers, runners and joggers of all levels are welcome. Wear your best ugly sweater or festive attire. The course is open, so roads are not closed and participants must obey traffic laws. The route shows off the surrounding neighborhood and is marked with arrows and volunteers.

All participants receive a free craft beer at the finish line from the brewery, an Ugly Sweater seal holiday ornament and finisher medal, and an Ugly Sweater seal sticker. There is also a chance to win prizes such as series merchandise or beer to take home, and access to festivities like live music and games. An Ugly Sweater sweatshirt can be added when choosing a ticket type.

Bring a valid ID. You do not need to be 21 to take part, but you must be 21 to drink beer, and registered underage participants receive a token for a free non-alcoholic drink. The event is rain or shine, and there is no bag check. Register on the event’s Eventbrite page.

Details are subject to change, so always confirm with the organizer before registering.

Ugly Sweater 5k @ Left Hand Brewing Co. at a glance

Ugly Sweater 5k @ Left Hand Brewing Co. is a run / walk event at Left Hand Brewing Company in Longmont, Colorado. It takes place Sat, Dec 5 at 10:00 am.

• When: Sat, Dec 5 · 10:00 am
• Where: Left Hand Brewing Company, Longmont
• Sport: Run / Walk
• Format: 5K
• Entry: See the organizer for entry fees and registration

Find more like this: More Run / Walk events in Colorado · More 5K events · Events in Longmont · Other events at Left Hand Brewing Company