Remember Pearl Street's Legendary October Costume Crawl in Boulder

If you lived in Boulder in the late 1980s, you remember Pearl Street's October costume crawl. It was a costume party on a scale that seems impossible now: tens of thousands of people in elaborate costumes, packing the brick pedestrian mall from one end to the other, seeing and being seen on an October night. The mall opened in 1977 and Boulder's free-spirited October celebration took root there almost immediately. By the time I was a student at CU from 1986 to 1989, it had grown into the biggest, wildest, most joyful crowd you could imagine. Nothing since has ever quite replicated it.

A Tradition Born on a Pedestrian Mall

When the Pearl Street pedestrian mall opened in 1977, it gave Boulder something it had never really had: a car-free downtown heart where people could gather, wander, and linger. And a town that loves a good time figured out what to do with it. October 31st became the night when that open-air living room turned into a costume party. No tickets, no fences, no rules, just a whole town showing up dressed to impress and ready to celebrate.

By 1985, the celebration had grown to an estimated 25,000 people in costume, walking up and down Pearl Street. The crowd was a mix of locals and visitors, and everybody seemed to know that this was the night to be on Pearl. The word spread year after year, and each October the mall got a little fuller, the costumes got a little bolder, and the legend got a little bigger.

The Mall Crawl

People called it the "mall crawl," and it was gloriously unorganized. Unsanctioned, spontaneous, and completely without a plan, it simply grew every year because it was too much fun to stop. The whole point was to outdo each other. Giant chickens strutted down the brick walkway. Cross-dressed brides and grooms paraded hand in hand. Famous characters of every era came to life for one night. If you could imagine it, somebody on Pearl Street was wearing it, and somebody else was already planning something bigger for next year.

The party flowed from bar to bar, a true pub crawl up and down the mall, with the crowd spilling out onto the bricks between stops. And every year there was a story you would tell for decades. My favorite: a couple dressed as Frankenstein's monster and his bride actually got married on the steps downtown, in full costume, in front of a cheering crowd. That was Boulder at its best, delightfully weird and completely heartfelt.

The Peak Years, and the End

By 1988 and 1989, the mall crawl had reached its peak. Crowd estimates ran as high as 40,000 people packing into downtown Boulder on October 31st, with revelers pouring in from surrounding communities all along the Front Range. I was at CU during those exact years, and let me tell you, the student section of Folsom Field had nothing on Pearl Street on October 31. It was wall-to-wall costumes, laughter, and chaos in the best possible sense.

But a party that big cannot stay a secret, and it cannot stay small either. The crowds got so large, and so rowdy, that the city ultimately had to shut the celebration down in 1991. It had simply grown beyond what an open-air mall could safely hold. The city made its call, and the great mall crawl passed into legend. I understand why it ended. I still miss it.

The Naked Pumpkin Run

No telling of Pearl Street's October celebration would be complete without the Naked Pumpkin Run, the famously quirky offshoot that became its own beloved tradition. It traces back to an unsuccessful 1974 Guinness World Record attempt by CU Boulder students, and somehow the idea refused to die. Every October 31st, runners donned nothing but sneakers and a hollowed-out carved pumpkin on their heads and sprinted through downtown Boulder, cheered on by thousands of spectators. Just imagine it: a stream of glowing pumpkin heads bouncing through the cold October night, the crowd roaring them along. It was absurd, it was hilarious, and it was pure Boulder.

The pumpkin run lasted for years, a running (literally) gag that everyone looked forward to. But a streak of perfect nudity through downtown was never going to last forever. Around 2009, police citations for indecent exposure finally caught up with the runners, and the Naked Pumpkin Run came to an end. Another legend retired, with a wink and a good story to tell.

A Town That Knows How to Have Fun

Here is what I carry with me from those years: the magic of living in a town that knows how to have fun. Boulder has always had a free spirit, and the October costume celebration on Pearl Street was that spirit at full volume. Nothing has ever quite replicated the mall crawl, and I do not expect anything will. It was a moment in time, a perfect collision of a new pedestrian mall, a college town full of energy, and a community that showed up to celebrate together.

The tradition lives on in a gentler form. On October 31st, Pearl Street still draws costumed crowds every year, families and students wandering the mall the way we did, just without the 40,000-person crowd. The heart of it is still there. And every October, I find myself smiling at the sight of a good costume on those bricks, remembering the nights when the whole town dressed up and the mall crawl was king.