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Fitness   •   Training   •   Nutrition
Runners wearing bright shoes and winter gear race along a snowy trail.

Your Essential Winter Marathon Training Guide

Conquer cold-weather miles—learn how to layer, fuel, and stay safe while training for your winter or early spring marathon.

Runner in neon gear jogs along a mountain road beside a large VO2 Boost supplement bottle.

Unlocking Your Endurance Potential: Why VO2 Max is a Distance Runner's Best Friend

Unlock your endurance potential—learn how improving your VO2 max can boost stamina, speed, and performance for long-distance runners.

Trail runner wearing a yellow cap and blue vest running along a forested ridge.

A 50-Mile Masterclass: My Journey on the Superior Hiking Trail

Battling rain, roots, and rugged miles, I conquered Minnesota’s Superior 50—a thrilling test run for my future 100-miler.


Runners in marathon on city streets

Carbohydrate Use in Marathon Running

Loading up on energy-boosting carbohydrates adds that extra mile to your endurance and stamina for marathon runs. 

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