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The CITIUS MAG Podcast | A Running + Track and Field Show

Susanna Sullivan On Why This Year’s Boston Marathon Feels Different + Getting Her Top 10 Streak Back

The CITIUS MAG Podcast | A Running + Track and Field Show

CITIUS MAG

Running, Sports

4.91.9K Ratings

🗓️ 2 April 2026

⏱️ 41 minutes

🧾️ Download transcript

Summary

"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.

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Host: Chris Chavez | ⁠⁠@chris_j_chavez

Guest: Susanna Sullivan | @susannasullivan4

Produced by: Jasmine Fehr | ⁠⁠⁠@jasminefehr

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Transcript

Click on a timestamp to play from that location

0:00.0

This episode of the CityS smack podcast is presented by X Endurance. When you finish a hard workout,

0:06.7

whether it's a long run or a workout on the track or a big lift session, the work isn't actually done.

0:12.8

We all know this. That's when recovery starts. It can get expensive to constantly pop into a smoothie shop after a run.

0:20.1

So one of the things that I've

0:21.9

been doing lately is using X Endurance Protein, which is designed specifically to help your body

0:27.5

recover, rebuild, and get stronger after training. I'm super excited to welcome X Endurance

0:33.2

into Sidious Mag's family of sponsors, since I've watched them support many professional athletes over the last decade,

0:40.1

Mack back in the day was an ex-endurance athlete.

0:43.3

Lately, you may have seen Jess McLean using their product as she builds up to the Boston Marathon.

0:48.7

What makes their protein a little different is their blend.

0:51.8

It combines four different types of protein,

0:54.6

so your body gets both fast- protein for immediate recovery and slower release protein to support muscle

1:00.6

repair over time. Each serving delivers 20 grams of protein and over 4 grams of BCAAs, which

1:07.7

helps support muscle growth and recovery after long sessions. It also includes

1:12.2

electrolytes and vitamins B6, B12, and D to support your overall recovery. And one thing that I've

1:18.9

appreciated is that it's easy on the stomach, no bloating or digestion issues like you sometimes

1:24.5

get with other weight proteins. You just mix one scoop with about four to six ounces of liquid, and it's great before a workout,

1:32.2

after a workout, or really any time during the day when you want to support your recovery.

1:37.1

Now, if you want to go crazy, here's my go-to mix, which is the chocolate protein,

1:42.4

half a banana, a scoop of peanut butter, ice, and some

1:45.6

almond milk.

1:46.2

Mix it all together.

...

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