Run

The "run until" trend on TikTok is a new take on the fartlek - and it might just be the workout refresh you need.

Here’s what’s holding you back from outkicking your rivals.

Running after riding a bike is much different from running on fresh legs. Learn about the physiology of running vs. triathlon running, plus how to estimate your triathlon run time.

A solid Ironman marathon can be elusive if you're not a sub-12 hour finisher. Coach Alison Freeman explains why the wheels fall off during the run leg for so many long-course triathletes, and how to have a better Ironman run.

The treadmill is your secret run speed weapon. Here's how to get the most out of your treadmill sessions, plus four treadmill workouts for athletes preparing for an Olympic distance triathlon.

Proper fueling and pacing is the key to executing a successful run in spite of whatever obstacles are thrown at you.

Technology and style come together in these fashionable, feel-good finds.

Technology and style come together in these fashionable, feel-good finds.

Technology and style come together in these fashionable, feel-good finds.

Technology and style come together in these fashionable, feel-good finds.

Technology and style come together in these fashionable, feel-good finds.

Technology and style come together in these fashionable, feel-good finds.

Technology and style come together in these fashionable, feel-good finds.

Technology and style come together in these fashionable, feel-good finds.

Technology and style come together in these fashionable, feel-good finds.

Do one of these repeatable tests every month to check the progress of your run fitness.

This past weekend's mixed relay World Champs in Hamburg gave tri-fans a taste of what's to come when the event gets its Olympic debut in three years: fast, exciting, heart pounding competition.

Dr. John Berardi helps set out a simple plan as to when and how often you should eat every day.

Learn which body type you have and how you can cater your eating habits to match.

Learn about the dangers of dehydration.

Dr. Berardi breaks down an easy way to use different food types to keep you balanced and get your diet on track.

Australia's Pete Jacobs traditionally does only two run workouts in the week leading up to Ironman Hawaii.

Some runs are best measured by time, others by distance.

New findings may explain where the infamous “runner’s high” came from.

First off the bike, then fade on the run. Sound familiar? Heather Jackson is here to help, because she’s been there, too.

Have you ever heard that running on a flat treadmill is like running downhill? Here’s why.

The more efficient the stride, the faster the athlete. What’s holding your stride back?

Video: Ahh, the smell of new shoes (if only for a day). Watch this video for the latest Trance running shoe from Brooks. Anthony Calagaris and Mario Fraioli discuss the Brooks Trance 10.

Running and triathlon coach Joshua Gold gives you Five drills to make you a better runner. This video is from the Multisport World Seminar in NYC.

Video: The 2011 Ecco Biom Running Shoe. Worth the money? Decide for yourself after watching this video with Mario Frioli and David Helter about the Ecco Biom running shoe.

We asked Dr. Victor Runco of the San Diego Running Institute to provide tips to triathletes looking to add trail running to their workout repertoire.

Business is booming at America’s running injury clinics.

It was an impressive breakout performance by Hall, who sought advice from triathlon coach and owner of San Francisco-based Purplepatch Fitness, Matt Dixon

Check out Kurt Hoy's author page.

The fact is, although the majority of our fellow endurance athletes are welcoming and understanding, every endurance sport has its fair share of snotty participants who think they are better than others.

This exercise will improve posture and helps to make your arms more efficient while running.

Check out Matt Fitzgerald's author page.

Check out Kurt Hoy's author page.

Check out Matt Fitzgerald's author page.

Check out Triathlete.com's author page.