Endurance Icons

Endurance Icons

By Mark and Jessica CullenSports
Download on the App Store

Endurance Icons episodes

  • Base season training mistakes!! How you can fix them and crush your 2026 goals

    In this episode, coach Mark breaks down exactly what you should and shouldn’t be doing during the base months of November, December, and January if you want to crush your 2026 season without peaking way too early.Most athletes mess this period up, this is the time to build durability, consistency, strength, and aerobic capacity so you can absorb real training when the season heats up.

    15 min
  • The Real Reason You Keep Getting Injured Running

    Most running injuries are preventable, and usually self-inflicted. In this episode, Coach Mark breaks down the real reasons runners get hurt and how to stay healthy for the long game.

    He covers topics like: ramping up mileage too fast to running the same pace every day, skipping strength, or ignoring early warning signs, this episode covers the training, lifestyle, and recovery mistakes that quietly add up to injury.

    Why your plan should always be written in pencil, and how simple habits like fueling properly, sleeping more, and varying your training can make you bulletproof over time.

    20 min
  • Two Riders. Same FTP. One Is 15 Minutes Faster—Here’s Why

    FTP is a useful benchmark, but it’s not the only thing that makes you fast. In this episode, we break down why two athletes with the same FTP could finish 10–15 minutes apart and what actually drives real-world bike speed. From aerodynamics and bottle setup to durability, fueling, pacing, and momentum, we unpack the hidden performance factors that separate mid-pack riders from podium contenders.


    27 min
  • The Zone 2 Trap: Great for Endurance, Terrible for Race Performance (Alone)

    Zone 2 training is incredible for building your aerobic base, improving fat oxidation, and making long efforts feel easier, but if it’s the only intensity you train in, you’ll eventually hit a performance plateau.


    In this episode, I break down why Zone 2 alone won’t make you faster, how it fits into the bigger performance pyramid, and why you still need threshold and VO2 max work to raise your race pace, FTP, and repeatability in high-intensity efforts. I’ll explain why beginners often see huge early gains with Zone 2 while intermediate and advanced athletes quickly stall, and how triathletes, runners, and CrossFit athletes can layer higher intensities to deliver real race-day speed and durability. If you’ve been “living in Zone 2” and wondering why your performance isn’t improving, this will help you understand what’s missing and how to build a complete endurance engine.

    15 min
  • The Systems & Habits of the TOP Athletes

    Ever wonder what separates elite athletes from everyone else? In this episode, Coach Mark Cullen breaks down the key habits and systems that world-class performers live by: from training structure and recovery routines to mindset, nutrition, and environment design. Learn how to apply these proven strategies to your own training and life so you can perform like a pro, no matter your level.


    26 min
  • The Final 14 Days: How to Peak for Your Fall Half or Marathon

    Each week I share my thoughts on key topics to help endurance enthusiasts train smarter, race better, and enjoy the process.Whether you're training for your first triathlon or chasing a new PR, these discussions are designed to give you practical, honest, no-fluff insights from a coach’s perspective. Got questions or topics you want covered? Drop them in the comments!💥 Don’t forget to like, subscribe so you don’t miss a weekly episode.▶️ Connect with me on instagram @markcullenn or @lpendurance for coaching info and updates.

    14 min
  • Training Zones Demystified: How Zone 1-5 Should Feel When You Train

    Each week I share my thoughts on key topics to help endurance enthusiasts train smarter, race better, and enjoy the process.Whether you're training for your first triathlon or chasing a new PR, these discussions are designed to give you practical, honest, no-fluff insights from a coach’s perspective. Got questions or topics you want covered? Drop them in the comments!💥 Don’t forget to like, subscribe so you don’t miss a weekly episode.▶️ Connect with me on instagram @markcullenn or @lpendurance for coaching info and updates.

    20 min
  • Race Pace Predictors: Workouts That Tell You Your 5K–Marathon Fitness

    Each week I share my thoughts on key topics to help endurance enthusiasts train smarter, race better, and enjoy the process.This week im talking about my favorite race predictor workouts for 5k, 10k, Half Marathon and Marathon. Whether you're training for your first triathlon or chasing a new PR, these discussions are designed to give you practical, honest, no-fluff insights from a coach’s perspective. Got questions or topics you want covered? Drop them in the comments!💥 Don’t forget to like, subscribe so you don’t miss a weekly episode.▶️ Connect with me on instagram @markcullenn or @lpendurance for coaching info and updates.

    16 min
  • Race Recap & Lessons Learned | Men’s Ironman World Championship – Nice, France

    Each week I share my thoughts on key topics to help triathletes, crossfitters and runners train smarter, race better, and enjoy the process.This week ill recap the race and learning from the Ironman World Championship in Nice, France. Whether you're training for your first triathlon or chasing a new PR, these discussions are designed to give you practical, honest, no-fluff insights from a coach’s perspective. Got questions or topics you want covered? Drop them in the comments!💥 Don’t forget to like, subscribe so you don’t miss a weekly episode.▶️ Connect with me on instagram @markcullenn or @lpendurance for coaching info and updates.

    15 min

About Endurance Icons

From the publisher's feed

Endurance Icons is a podcast hosted by Jessica and Mark Cullen that interviews the greats of endurance sports, ranging from triathlon, running and OCR to adventure racing, freestyle skiing and car racing.

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