The Infirmary | Fixing Broken Endurance Athletes
Aug 13, 2026 · 0 min · 17 segments
Mark McCabe wrote triathlon into his social calendar in 2020, stayed stuck at a 5:45 for four years, and then decided to find out what would happen if he actually gave the sport what it was asking…
Mark McCabeGuestChris BaggHostWelcome to another episode of The Infirmary, where my guests and I debunk myths and lead you instead to the best practices in endurance sport.
An endurance athlete for over 20 years, a coach for 17, and a professional triathlete for 15 of those years.
During that time, I've noticed that the endurance world loves to make simple concepts complex, or it oversimplifies nuanced or complicated topics, usually in the pursuit of profit.
Here at The Infirmary, I'm committed to helping you find a clear, simple path through the endurance thickets so you can focus on what matters, improving at your sport, avoiding injury or burnout, and discovering the joys of healthy competition, participation, and community.
Welcome back to another episode of The Infirmary, where my guests and I try to debunk myths in the endurance world and probably help you guys achieve the results you're after, ideally with less spending of money, less injury, less burnout, less sadness.
Mark and I met several years ago when he came to camp and promptly blew chunks all over the side of the road, but I'm sure that's something that we'll talk about later in the pod.
But Mark is a videographer and a triathlete who joined the sport in 2020, and then the reason he's on the show today is, uh, this past month in his sixth year of racing, he had what is very easy to describe as a breakthrough performance.
At last month's Ohio 70.3, where the swim was canceled, he went 4:11:50 and turned in the best result of his career, jumping from a career average 62 percentile to the top 8% of the field with a 21-minute PR, run PR, and a 16-minute bike PR.
Today, we're gonna talk about what went into that breakthrough performance so you can do the same in your training and racing.
Read the full transcript.
Create an account to read the whole episode, search across every transcript, and follow the shows you care about.