The Best Hot Dog in Colorado Was Found Right Here in Boulder

Some legends don’t need neon signs or viral TikToks to stay alive. They thrive through word of mouth, messy napkins, and the kind of loyal following that stretches back decades. In Boulder, Colorado, one such legend comes in a bun, slathered in mustard, and is known simply as Mustard’s Last Stand.

Tucked away just off the beaten path — and barely noticeable if you’re not paying attention — this local hot dog haven has quietly served what many claim to be the best hot dog in the entire state. And they might be right.

A Boulder Icon Since 1978

Mustard’s Last Stand has been flipping dogs and topping them high since 1978. Inspired by the classic Chicago-style hot dog stands, this no-frills joint brings the Midwest flavor right into the heart of Boulder. It’s the kind of place where the menu hasn’t changed much over the years — and that’s a good thing.

Whether you’re grabbing a dog after class at CU Boulder, swinging by with the family, or just craving something that tastes like your childhood, Mustard’s hits the spot every time. And yes — they serve authentic Chicago dogs: poppy seed buns, neon relish, sport peppers, the works.

The Mustard’s Magic

What sets them apart? It’s more than the snap of the Vienna Beef dogs or the crispy crinkle-cut fries. It’s the atmosphere — humble, quirky, and loaded with Boulder charm. The staff treats regulars like old friends, and even first-timers feel like they’ve stumbled onto a secret that’s too good to keep.

Vegans and vegetarians? Don’t worry. Mustard’s has options for you too — a rarity in the world of hot dog stands.

One bite, and it’s easy to understand why Mustard’s has stood the test of time. It’s not just a meal — it’s a memory.

Worth the Hunt

We won’t drop the exact address here — that would ruin the fun. But let’s just say if you head down Broadway and make your way near the creek, you’ll likely catch a whiff of grilled onions and nostalgia.

Want to explore more Boulder food icons? This local guide is full of unexpected treasures just like this one.

Whether you’re a hot dog purist or just looking for a slice of Boulder history between two buns, Mustard’s Last Stand is the kind of place that proves simple food, done right, never goes out of style.

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