Join Mark and Chris and four guests as we do a deep dive on sustainability and the running business in advance of Earth Day. Hear from Wayne Elsey, founder of Sneakers4Good, about how his organization helps shoes find a productive second life; Gain some wisdom and insight from Alicia Chin about her role with Altra, Smartwool and Icebreaker. Caspar Coppetti, one of the founders of On Running, shares how living in Switzerland has shaped his personal and business perspective on sustainability. And Laura Bolgen discusses ASICS' ambitious Nimbus Mirai shoe.

From the mountains of Switzerland to the hills of Texas, Slingin' Shoes features two uplifting conversations. Garrett Sage, owner of Irun Texas, tells Mark and Chris what he learned managing an Amazon warehouse and why he walked away to work for Fleet Feet and eventually buy his own store.

Our brand interview is with Caspar Coppetti, one of the founders of On, who recently assumed the co-CEO title with another founder David Allemann. Caspar discusses product innovation, channel segmentation and how On works to stay entrepreneurial at $4 billion in annual sales.

We celebrate Women's History Month with two women who are leaving their mark on the run business: Kathy Dalby of Pacers Running and Burke Beck of Red Coyote Running. The pair share what prompted them to launch the Empowerun Retreat and reveal how the event is an important forum to discuss the challenges women face not only in the business, but in their work and home relationships. Tune in for a candid, inspiring conversation.