Other than Kokopelli Beer Company ... I don't know of any breweries in the Denver area that start with the letter "K".
I used Kokopelli Beer Company on my first time through the alphabet, so I can't use that one.
Scanning through the Colorado Brewery List, I spotted Lowdown Brewery + Kitchen. "Kitchen" begins with the letter "K". Maybe not ideal, but that appears to be the closest I can get.
I have established a precedent of allowing myself to look for letters elsewhere in the brewery names other than the first word.
See D is for Draw, Boggy and X is for WestFaX Brewing Company.
As an added bonus ... Lowdown Brewery + Kitchen is close to [The] Intrepid Sojourner Beer Project. The SheppyBrew Beer Model communicated displeasure with me for visiting Intrepid Sojourner Beer Project the without her.
We decided to hit these breweries this past Saturday.
K is for Kitchen, Lowdown Brewery +