In this episode of 321, Go!' hosts John Pelkey and Carissa Galloway interview Mike Berceli, an acclaimed costume creator for runDisney events. The discussion covers Mike's journey in running and costume designing, including his first experiences with runDisney, his favorite and most challenging costumes, and the inspiration behind his elaborate designs. They also delve into the importance of preparing costumes for various weather conditions and the logistics of transporting them. Additionally, they touch upon the supportive community of fellow costumers and the mutual encouragement within this creative subculture. Carissa and John also provide updates about their podcast, including upcoming Patreon events and a surprise nutrition announcement related to runDisney. The episode wraps up with listener mail, rapid-fire questions, and closing thoughts on the inspirational stories and camaraderie found within the runDisney community.