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25 Week Intermediate Ironman Triathlon Training Plan For Advanced Swimmers

For intermediate-level triathletes with a strong swim leg who like a challenge.

Time-Efficient, Expert Support, Proven Results

Achieve Your Best Ironman Performance in 25 Weeks with Expert Coaching Support and a Proven Training Plan

This 25-week training plan is your pathway to peak performance, designed for intermediate athletes striving to go faster, feel stronger, and achieve their best result without the risk of over training or under performing.

Build endurance, refine pacing, and approach race day with confidence—all through a structured, time-efficient strategy tailored to your goals.

This plan is also available for Advanced and Beginner Ironman athletes.

 

The Benefits for You

  • Boost Performance
    Every session is purpose-driven, designed to improve your endurance, strength, and race-day sharpness.
  • Progress with Purpose
    A clear 25-week roadmap, crafted by an experienced coach, helps you develop the endurance, skills, and strategy needed to excel on race day.
  • Confidence on Race Day
    Approach race day feeling prepared, strong, and ready to achieve your goals.

 

Targets Of This 25 Week Ironman Triathlon Training Plan

  • Improve Endurance and Efficiency: Develop the stamina to sustain strong performances across all three disciplines.
  • Refine Race Pacing and Strategy: Train at targeted intensities to optimize energy use and race execution.
  • Achieve a Consistent and Confident Race-Day Performance: Build resilience through structured progression to finish strong.

 

Tap Into Your Inner Drive

This plan is designed for triathletes who want to be challenged and enhanced. You understand the dedication it takes to train across all three disciplines, push through discomfort, and strive for something greater.

This is your opportunity to commit to consistent training across all three disciplines and perform your very best.

Key Features

Structured Progression

  • Block 1: Establish baseline fitness and build endurance with initial testing to set training zones.
  • Block 2: Increase volume and intensify sessions as your body adapts.
  • Block 3: Maximise volume and increase race pace training
  • Block 4: Increase race pace simulation duration.
  • Block 5: Taper and peak, reducing volume for recovery while maintaining intensity for race day.

Engaged and Connected

  • Keep training enjoyable with exciting, varied training focused on technique and efficiency.
  • Compatible with smartwatches for easy tracking and real-time feedback.

Personalised Approach

  • Sessions tailored to your paces and goals using the TrainingPeaks zones calculator.
  • Coaching assistance with your training plan—just leave your email, and I’ll guide you personally.

Who Is This Intermediate Ironman Training Plan For?

  • For Ambitious Athletes
    Perfect for intermediate athletes ready to take on challenges, improve endurance, and push toward their next level of performance.
  • For Focused Competitors
    Designed for those committed to maximizing race-day potential, refining their skills, and achieving well-rounded improvement across all triathlon disciplines.
  • Swim Sessions for Front-Pack Swimmers:
    This plan is ideal for athletes expecting to be towards the head of the swim pack.

This plan is also available for Beginner and  Intermediate swimmers.

 

This plan is ideal for athletes who can:

  • Swim consistently faster than 1:50 per 100 meters.
  • Cycle comfortably for an hour and a half.
  • Run for an hour.

 

What You Get

6–8 Sessions Per Week
Including endurance, speed, and race-specific workouts broken into:

  • 2 Swim sessions per week focused on fine tuning technique and building endurance to improve efficiency.
  • 2 Bike sessions per week targeting endurance and race-specific intensity for a strong bike leg.
  • 2 Run sessions per week designed for stamina and confidence to ensure you finish the race strong.
  • 1 Strength session per week enhancing your overall athleticism and injury resilience.
  • 1-2 Rest days per week crucial for recovery and recharging, helping you stay fresh and ready.

 

Added Extras

  • Pace-Based Run and Swim Sessions
    Workouts aligned to your personalised pace zones for optimized progress.
  • Power-Based Bike Workouts
    Bike sessions designed specifically around your power for focused improvement.
  • Smartwatch Integration
    Sync with your smartwatch for live session tracking and real-time feedback.
  • Expert Support
    Receive personal email support throughout your training plan.
  • Every Session Fully Detailed
    Each session is outlined with a clear purpose, showing how it contributes to your progress.

Why This Plan Is for You

  • Expertly Designed
    Created by Chris, Head Coach at Efficient Endurance, with years of experience guiding athletes to success in full-distance triathlons.
  • Motivation Built In
    With progressive workouts and variety, you’ll stay engaged and motivated from start to finish.
  • Race-Ready Confidence
    Feel fully prepared with the skills and fitness needed to excel on race day.
  • Comprehensive Support
    Access expert guidance and email support whenever you need help.

 

Additional Extras

  • Welcome Document: Explains your training plan, terminology, and how to maximize progress.
  • Race Day Guides: Tips and strategies to ensure you’re fully prepared for the big day.
  • Warm-Up Routine Videos: Learn how to warm up effectively for peak performance.

 

Start Your Journey

Imagine crossing the finish line of your Ironman triathlon, knowing you’ve trained with purpose and pushed your limits. This plan is thoughtfully structured to ensure every session counts.

Let’s take that first step toward your most successful triathlon yet—start today!

Training Plan Sample(s)

Training Plan Cost

Full Compatibility

This training plan is compatible with...

Your Coach

Chris Searle the head coach of efficient endurance

Hi, I’m Chris.

I’m a qualified triathlon coach with 12 years of experience, having coached everyone from complete beginners to Ironman age-group podium athletes.

My coaching philosophy is centered on efficiency, ensuring no training time is wasted. I’m dedicated to helping athletes maximise their potential by focusing on smart, effective training.

 

FAQ's

These plans are tailored for athletes of all levels, from beginners to advanced, looking to maximize their performance. If you’re unsure of which level you are, get in touch!

The only thing you need is a trainingpeaks account and the usual triathlon kit (swim kit, bike, running shoes) but to get the most out of your training plan, having the following would be ideal:

  • Compatible* smartwatch and/or bike computer
  • Pull Buoy and Kickboard

The following items are optimal but not necessary:

  • Chest Based Heart Rate Monitor
  • Bike Power Meter

*All common devices sync with trainingpeaks, check here to see if your device is compatible with the structured workout feature so you can follow your sessions on the go.

Training sessions are written in an optimal order for improvement, progression and recovery, but plans change and when they do you can move sessions across days and weeks with a premium training peaks account.

If you need to move things around but are not sure what is best, get in touch and I will help you out.

With years of experience coaching swimming, I understand that drills are very specific to the swimmer and can in many cases make technique worse. For this reason, plans focus on technique points rather than drills. The only ‘drill’ that you might come across in our training plans is sculling.

Most likely. Plans that have strength sessions included use weights such as dumbbells, barbells, kettlebells and cable machines. You don’t have to do these sessions but they add another dimension to your training that running, swimming or cycling alone can not do.

Sometimes, we have to miss a session, life gets in the way. Fortunately these plans are robust and consistency and efficiency will keep you progressing. Don’t fret over a missed session and don’t try and catch up either, you will still keep moving forwards.

You can adjust the schedule or swap sessions with a premium training peaks account; email support is available for advice if you’re unsure of what to do.

Every session includes detailed instructions and the rationale behind it. Feel free to email if further clarification is needed.

Improved endurance, better race-specific fitness, and confidence on race day. Results depend on how disciplined you are to the plan- it is designed to keep you motivated.

Our guarantee ensures that you are on the right training plan for you. If you find your plan is too much, too little, too hard or too easy, get in touch and we will swap you onto a more suitable plan.

We would love to issue refunds but do not have the option for this as payment is taken by trainingpeaks.

Absolutely! Email support is available for guidance and motivation.

We only provide support for the duration of your plan and 2 weeks afterwards. If you would like coaching after your plan, get in touch!

Why choose Efficient Endurance

Efficient Endurance Training Plan

  • Customised to Athlete Goals - Ability-based plans & email support
  • Expert Input - Designed by a qualified, experienced coach
  • Structured Progression - Detailed progression
  • Focus on Technique - Detailed swim technique sessions
  • Detailed Sessions - Clear explanation of how sessions support your goal
  • Training Volume - Balanced for your level
  • Race-Specific Prep - Includes taper weeks & race guides
  • Strength Training - Targeted strength sessions
  • Tech Integration - Compatible with smartwatches and bike computers
  • Support & Advice - Email support from a coach
  • Plan Guarantee - Free plan swap if needed
  • Cost - Less than $4 per week

Free Training Plan

  • Customised to Athlete Goals - Generic & non-specific
  • Expert Input - No professional input
  • Structured Progression - Some progression
  • Focus on Technique - Often absent
  • Detailed Sessions - No explanations
  • Training Volume - Inconsistent and limited
  • No race-specific advice
  • Race-Specific Prep - Not included
  • Strength Training - Not Included
  • Tech Integration - No compatibility
  • Support & Advice - No support offered
  • Plan Guarantee - No other plans
  • Cost - Free

Other Premium Training Plans

  • Customised to Athlete Goals - Limited ability variations
  • Expert Input - Created by a qualified coach
  • Structured Progression - Include generic progression
  • Focus on Technique - Often absent
  • Detailed Sessions - No explanations
  • Training Volume - Suitable volume for athletes
  • Race-Specific Prep - Minimal race-day strategy
  • Strength Training - May have generic strength work
  • Tech Integration - May have device compatibility
  • Support & Advice - Occasional support, sometimes outsourced
  • Plan Guarantee - Limited or no guarantee
  • Cost - $4-6 per week

AI Training Plan

  • Customised to Athlete Goals - Algorithm-based, lacks nuance
  • Expert Input - Automated, no human touch
  • Structured Progression - Only if the algorithm says so
  • Focus on Technique - Often absent
  • Detailed Sessions - No explanations
  • Training Volume - Metrics can miscalculate workload
  • Race-Specific Prep - Lacks detailed guidance
  • Strength Training - Rarely included
  • Tech Integration - May have device compatibility
  • Support & Advice - No human support available
  • Plan Guarantee - No guarantees
  • Cost - $10+ per week

* Strength training included on some training plans at additional cost

** Cross training is available on some specific plans

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