Why did American Record holder Zach Bitter fail at his goal of besting his own 100-mile record? Was it his new embrace of high carb fueling instead of his tradition low-carb approach?

In this episode, former WR holder and current AR holder Zach Bitter joins us to discuss how he navigates failure, what led to his DNF at his recent 100-mile record attempt, his experiments with fueling and carbs, and a lot more.

Don't miss Zach's amazing podcast, Human Performance Outliers or his website ZachBitter.com. You can also listen to him in 2024's Endurance Episode.

If you have not yet, please follow or subscribe to the Strength Running Podcast!

We are supported by 2Before, a powerful sports supplement made from New Zealand Blackcurrant berries designed to increase endurance, manage inflammation, support immunity, and promote adaptation. 2Before helps to boost performance by increasing blood flow, making it more efficient for the body to pump oxygenated nutrient-rich blood into the muscles.

Just like beetroot powder but more effective, 2before uses the powerful vasodilation benefits of blackcurrant berries to prime you for hard work. If you're getting ready for a big workout or race, their caffeinated version is a must try! You'll get the oxygen boosting benefits of blackcurrants, plus the performance benefits of caffeine.

So, if you want to try to boost your performance and immune system, use code JASON for 30% off 20 packs and multi-serve packs at 2Before.com.

Thank you to 2Before for supporting Strength Running!

Previnex's new Gut & Green Superfoods powder is my new go-to. It has organic barley and oat grass, alfalfa, spirulina, chlorella, kale and broccoli… and that's it. Simplicity is powerful and Gut & Green delivers on what I care most about: doing one thing really well.

Their ingredients are backed by clinical data and contain three specific gut fibers that help promote GI health, digestion, reduced inflammation, and a better microbiome. As someone who doesn't always eat all of their vegetables, this is important to me.

With twice of the fiber of my last greens mix and a better flavor, it's a no brainer. Gut & Green Superfoods is like insurance against my diet (which isn't always as good as it should be) so I can feel my best throughout the day.

Try it for yourself here at previnex.com and be sure to use code "JASONGREENS" to save 15% off your first order. Don't tell anyone, but if you put Gut & Green Superfoods powder in your cart, then the 15% off discount will work for anything else you add into your cart as well. Thanks Gut & Green!

Do you want to improve and race faster in 2026? I want to help you do exactly that!

In this episode, coach Jason Fitzgerald is sharing his most impactful training interventions for dramatic running improvement. We're discussing:

• Hill Sprints (see here)
• Monthly mileage
• Aerobic cross-training
• Heat training
• Heavy weightlifting (start here)

If you haven't yet, follow or subscribe to the podcast!

After resisting most supplements for the better part of my life, I'm cautiously changing my tune. I'm now a Masters runner and in my personal life, I'm optimizing for longevity. I want to be my healthiest self for as long as possible and I'm excited to partner with Previnex to make that happen.

Previnex uses the most bioavailable, clinically tested ingredients, the optimal form and dose of each ingredient, pharmaceutical grade manufacturing, testing of raw ingredients and finished products. For every purchase you make, they also donate vitamins to kids in need.

Their new Muscle Health Plus is something I'm now taking. Turning 40 – and having a thin frame – has made me realize that I need to prioritize lean muscle mass to stay healthy and age well. Muscle Health Plus has creatine, essential and branched chain amino acids, and it's designed in a way to maximize protein synthesis and the absorption of amino acids.

Muscle Health Plus will help you prevent muscle damage, which is particularly important for aging runners who want to protect themselves from muscle loss and recover faster after hard workouts. As is true for all of their products, Previnex adheres to the highest of standards: their ingredients are clinically proven to do what they say they're going to do.

They're now offering international shipping so if you live in the UK, Canada, Australia, or anywhere around the world, you can try Previnex as well.

Previnex offers a 30-day money back guarantee. If you don't feel the benefits of their product, you get your money back no questions asked. With their focus on quality and customer satisfaction, I hope you'll try it!

Use code jason15 for 15% off your first order at Previnex!

A big thanks to LMNT for their support of this episode! They make electrolyte drinks for athletes and low-carb folks with no sugar, artificial ingredients, or colors. They are offering a free gift with your purchase at LMNT. And this does NOT have to be your first purchase. You'll get a sample pack with every flavor so you can try them all before deciding what you like best.

And BIG news! Their newest flavor is now permanently available : LEMONADE SALT!

LMNT's products have some of the highest sodium concentrations that you can find. Anybody who runs a lot knows that sodium, as well as other electrolytes like magnesium and potassium, are essential to our performance and how we feel throughout the day.

If you're not familiar, LMNT is my favorite way to hydrate. They make electrolytes for athletes and low-carb folks with no Sugar, artificial ingredients, or colors. I'm now in the habit of giving away boxes of LMNT at group runs around Denver and Boulder and everyone loves this stuff.

Boost your performance and your recovery with LMNT. They're the exclusive hydration partner to Team USA Weightlifting and quite a few professional baseball, hockey, and basketball teams are on regular subscriptions. So check out LMNT to get a free sampler pack and get your hydration optimized for the upcoming season.