Organizers say 400 took to Boulder Creek for the annual tradition which dates back nearly 20 years. “This is what Boulder was known for for decades—being a wild, whacky hippie town. It’s kind of evolved into a tech town recently, but this is kind of keeping the Boulder spirit alive,” Lance Panigutti, whose company Without Limits Productions organize the event. Without Limits typically does event production for triathlons, cycling and other races, however, “this is probably our most fun event of the year, it’s not competitive, it’s just about having a good time.