Tori and April discuss the controversy around trail access for electric mountain bikes with Michelle Healy of Bend Parks and Recreation and Adam Craig of the Oregon Timber Trail Alliance.

Alon and April speak with Sara Dykman about her 10,000 mile bike trip following the migration of Monarch butterflies. In the second half, Max Glaskin discusses his book, Cycling Science: How Rider and Machine Work Together. He addresses the question: "exactly why does a bicycle stay upright?"

Alon and Tori speak with Matt Pierce of World Bicycle Relief about their programs that combine philanthropic distributions with social enterprise sales. In the second half they talk with Daniil Abbruzzese, a Portland youth who with friends created Bikes Period to distribute bicycles in Nicaragua.

April and Tori talk with Dr. Tyler Folsom about his work on autonomous bicycles and the Elcano Project. They also speak with Ken McLeod from the League of American Cyclists about the legal and safety impacts of autonomous vehicles. In the second half they interview Ann Hall, author of Muscle on Wheels, the story of women racers of high wheel bicycles in the nineteenth century.

Alon and Tori talk with Dr. Adonia Lugo about her book Bicycle/Race: Transportation, Culture, & Resistance and the topic of social equity in bicycle advocacy, with a focus on Southern California. In the second half they talk with photographer Carolin Kewer about her "Los Angeles Bike Rebels" exhibit of photography.

Terry and Alon talk with cycling advocates from Vancouver, BC and Tijuana, Mexico.

Alon and April talk with travel writer Dervla Murphy, best know for her book Full Tilt: Ireland to India With a Bicycle, and Ornithologist Donald Kroosma, author of Listening to a Continent Sing: Birdsong by Bicycle from the Atlantic to the Pacific.

Tori and Terry speak with Portland attorney Mark Ginsberg about steps to take after a crash. Guthrie Straw previews this year's Filmed by Bike festival.

Tori and April interview Portland Officer Todd Engstrom and Houston Officer Steve Wick about the techniques and use cases for doing Community Policing by bicycle.

Alon and new host April talk with Rob Greenfield about his cross-country "Green Rider" trips doing good deeds on bikes. In the second half they interview Peter Gelman about his post-oil SF/mystery Dangerous Bicycle Mystery Quest.