"I missed out on keeping my top ten at a World Major streak when I ran New York. That was my biggest regret: walking away having lost the streak. I want to get back into that rythmn of being in the top ten. I'd love to find myself with 5K or 8K to go feeling like I'm still competing for one of the top spots."
My guest for today’s episode is Susanna Sullivan. She's one of the most consistent marathoners in the United States and someone who’s coming into Boston with good momentum from 2025.
Her last year was anchored by a fourth-place finish in Tokyo, which was a breakthrough on the world stage. She executed, competed, but didn’t fully believe she was in the race for a medal until later on.
Now she heads into Boston with what she describes as her first truly intentional build for this course. She’s focused on hills, especially the downhills, and tailored specifically to the demands of racing Boston. Add in a 1:08 half marathon PR earlier this year, and it’s clear the fitness is there.
In this episode, we talk about that Tokyo breakthrough, the mindset shift that’s followed, what she learned from a demanding 2025 season, and why this Boston build feels different.
____________
Host: Chris Chavez | @chris_j_chavez
Guest: Susanna Sullivan | @susannasullivan4
Produced by: Jasmine Fehr | @jasminefehr
____________
SUPPORT OUR SPONSORS
WAHOO: With the Wahoo KICKR RUN, you can simulate the exact Boston or London Marathon course right in your own home. You can also use the run free mode, which uses sensors to automatically match the belt speed to your stride. No buttons, no interruptions, no breaking your flow. When you use code CITIUS at checkout, you'll also get a free KICKR Headwind Smart Fan. Check it out today at wahoofitness.com.
OLIPOP: Olipop’s Tropical Punch tastes like a vacation in a can. It has the perfect balance of pineapple, passionfruit, mandarin, and apple. You get that nostalgic fruit punch flavor, but way more crisp and way more refreshing. Every can contains their Olismart blend, which includes ingredients designed to support digestive health and help feed your gut microbiome. If you haven't had tried Olipop yet, grab a can and see what the hype is all about! Head to DrinkOlipop.com and use code CITIUS25 at checkout to get 25% off your orders.
XENDURANCE: When you finish a hard workout, the work isn't actually done. That's when recovery starts. Xendurance Protein is designed specifically to help your body recover, rebuild, and get stronger after training. It combines four different types of protein, so your body gets both fast absorbing protein for immediate recovery and slower release protein to support muscle repair over time. Check it out at Xendurance.com and use code CITIUS for 25% off your first order.