Smirkus' performers and coaches have come from Canada, China, Colombia, United Kingdom, Ethiopia, France, Georgia, Germany, Hungary, Indonesia, Israel, Italy, Kazakhstan, Latvia, Moldova, Mongolia, the Netherlands, New Zealand, Russia, Sweden, Thailand, Ukraine, Zambia, ten Native American nations and 20 US states.

[5] At the International Children's Festival at Wolf Trap National Park for the Performing Arts in September 2000, Circus Smirkus was introduced as "the United Nations of the youth circus world."

Circus Smirkus has a summer camp that trains children in areas such as aerials, clowning/performance, acrobatics and juggling.

Participants may also choose to train in other skills such as human pyramids, unicycling and stilt walking.

The circus opened its Summer 2015 season at new, permanent facilities—a 135-year-old farmhouse on 35 acres (14 ha) in Greensboro, Vermont.