Apple fitness chief Jay Blahnik will moderate an upcoming Q&A with Christy Turlington Burns, Scott Jurek, and Heather Armstrong about training for the Boston Marathon. The session will take place at the Boylston Street Apple Store on Saturday, April 16, and will also focus on training using the Apple Watch.

From Apple:

Join Christy Turlington Burns, ultramarathoner Scott Jurek, and Heather Armstrong, founder of, as they share their experiences training for the Boston Marathon. The group runs to raise awareness for Every Mother Counts, a nonprofit organization founded by Christy that is dedicated to making pregnancy and childbirth safe for every mother, everywhere. Apple's Jay Blahnik will moderate a Q&A about their shared passion for running and their experiences training with Apple Watch.

Apple's head of fitness technologies, Blahnik has been with the company for the last couple of years, helping to shape the fitness features of the Apple Watch. This is also not the first of these types of events that he's moderated, having appeared at similar Q&A sessions at Apple Stores since the launch of the watch. Christy Turlington Burns previously appeared on stage alongside Tim Cook during the Apple Watch launch event.