The Mighty Colorado Burger

1898 S Flatiron Ct, Boulder

Recent Reviews

Kevin Kane

I was hankering for a burger at lunchtime and ordered the Bacon Mighty burger. It did not disappoint! Great burger and perfectly salty, crispy shoestring fries really hot the spot. I will be back again.

Charlotte Caddel

Paid over $21 for a burger with cheese curds and got around 5 (!) cheese curds with probably the greasiest burger I’ve ever eaten. Not worth the money, maybe it was because I ate near close and was sober but definitely not great at all.

Atmosphere: 3

Food: 2

Service: 3

vikas Murthy

3$ extra for veggie patty. Ouch!

Atmosphere: 4

Food: 3

Service: 3

Cardi

Love their food. I drove over here specifically for lunch and no one was at the counter or answering their doorbell. I waited ten minutes. One of the bar tenders said hi but didn’t offer to find a restaurant employee

Tim B.

Definitely my top 3 breweries in Boulder (hard to declare a winner). The brandy barrel aged stuff is stellar. Food is definitely a bit weak unless you just wants tots. Id eat first

James Moore

It's inside of Upslope Brewing which makes it difficult to find since there is no outside advertising. The burger was good, I had the mushroom burger, but rather salty.

Dirk Grunwald

I would have included a photo of my mushroom burger but by the time I had thought about that, I had mostly inhaled the thing.Hands down one of the best burgers I have ever had - juicy, succulent and perfectly spiced. The fries were also on point - crispy but not too crispy and very flavorful. It was also a quick order with the option of ordering ahead and pagers when you're waiting.Combine all of that with the opportunity for fabulous beers from Upslope, you have a winning combination.

Atmosphere: 5

Food: 5

Service: 5

Recommended dishes: The Mushroom Mighty

Vince B.

A new favorite stop when in Boulder. Casual, great beer and good conversation. Good vibes only

Riley June Cooley

We come here often and it is always amazing. The service is quick, and the food is always hot and delicious. I usually get the Mighty Bacon Burger and it never fails to impress! Everything is always clean and even when it's busy , the line goes quick.

Atmosphere: 5

Food: 5

Service: 5

Recommended dishes: The Mighty Burger

Julie Connelly

OMG!!!! Between the fabulous burger and the to-die-for dessert curds we had the most fantastic meal. Mark was so delightful, it is obvious that he is passionate about bringing Boulder the best!!! Thank you for a wonderful evening!!!

Atmosphere: 5

Food: 5

Service: 5

Wholehearted Parenting Collective

If you’re not eating Mighty burgers & dessert curds at Upslope, you’re not living. If you think you need more reason to go, beyond the amazing food & beer, visit to meet Mark - you won’t regret it.

Atmosphere: 5

Food: 5

Service: 5

Recommended dishes: The Mushroom Mighty

Bre C.

Extremely unprofessional manager/member of staff incident with a family member. Very out of place among the rest of the establishments in Boulder. Disrespectful when resolving any complaints or issues - fine for a quick drink but do not expect a warm, friendly environment.

Doug P.

Great craft beers and excellent service. We sat on the patio and enjoyed our lunch that we brought with us. It was a sunny day, so the experience was awesome. Only let down was they were out of t-shirt in large sizes. A miss for free advertising.

Jon Mullen

Best burgers and chicken sandwiches in Boulder! Been going for the past year and are never disappointed. Had the special buffalo wings last weekend and they were the best I have had west of upstate NY. Highly recommend!!

Atmosphere: 5

Food: 5

Service: 5

James Stearns

Marc made me the most amazing double cheeseburger I have ever had. Perfect proportions of meat, cheese and toppings. Tots made it perfect. I already have plans to go back next week.

Atmosphere: 5

Food: 5

Service: 5

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The Mighty Colorado Burger

1898 S Flatiron Ct, Boulder, CO 80301