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Training Plan

Triathlon Ironman Intermediate 16 Weeks

16 weeks 5.4h/Week Intermediate
49 €
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Who is this Ironman Triathlon training program for?

This plan is for intermediate triathletes, already initiated to the triple effort or regularly practicing one or two of the disciplines. It is for triathletes who wish to progress in Ironman Triathlon distances with a structured, balanced, and performance-oriented plan with an average weekly volume of 5.4h. This program will allow you to consolidate your fundamentals, optimize your training time, and better manage your transitions.

✅ What you get with your plan:
🗓️ A structured week-by-week plan, balanced and demanding according to your level.
🏊🚴🏃 Varied sessions to develop endurance, technique, and speed.
🧠 Training blocks designed for measurable and sustainable progress.
🔁 Practical tips to optimize your recovery, nutrition, and equipment.
📱 PDF format + synchronization with Google Calendar.
🛠️ A plan developed by experienced coaches, tested and validated to reach a new milestone.

🧾 Plan overview

WEEK 1 (~ 4.5h)
58min 1h20 1h45 Training load : 456
Monday

REST

Active rest, Balanced nutrition, Hydration, Restorative sleep, Mental relaxation, Recovery, Visualization
Tuesday

Strength & Conditioning – 40 mn

Warm-up (5 min)
  • Short mindfulness meditation.
  • Deep and conscious breaths.
Session body (30 min)
  • Body scan stretching: Chain stretches for the whole body (feet, ankles, calves, knees, thighs, hips, pelvis, abdomen, lower back, middle back, upper back, shoulders, arms, hands, neck, head) focusing on the sensations of each part. Hold for 30-45 seconds per area.
  • Diaphragmatic breathing with abdominal stretching: Lying on your back, one hand on the abdomen, feel the expansion on inhalation.
  • Visualization: During stretches, visualize your muscles lengthening and your joints freeing up.
  • Sound bath (optional): Listen to relaxing music or nature sounds during the session.
Cool-down (5 min)
  • Final relaxation, integration of sensations.
Wednesday

Running – 58 mn

V02 Max
Warm-up: 15 min in Z2
Session:
22 x 30 s in Z5, R = 1 min
Cool-down: 10 min in Z1
Thursday

REST

Active rest, Balanced nutrition, Hydration, Restorative sleep, Mental relaxation, Recovery, Visualization
Friday

Strength & Conditioning – 65 mn

Warm-up (10 min)
  • Light hip bridges, leg swings, hip circles.
Session (45 min)
  • Hip Thrusts with bar or dumbbell on hips: 3-4 sets of 10-15 repetitions.
  • Romanian Deadlifts (RDL) with dumbbells: 3-4 sets of 10-15 repetitions.
  • Bulgarian Split Squats: 3 sets of 8-12 repetitions per leg.
  • Leg Curls with elastic (lying or standing): 3 sets of 15-20 repetitions.
  • Single-leg Bridge: 3 sets of 12-15 repetitions per leg.

Take 90 seconds of rest between each set.

Cool-down (10 min)
  • Stretching of hamstrings, glutes, and quadriceps.
Saturday

Cycling – 80 mn

Base Training
Warm-up: 10 min in Z2
Session:
1h in Z2
Cool-down: 10 min in Z1
Sunday

REST

Active rest, Balanced nutrition, Hydration, Restorative sleep, Mental relaxation, Recovery, Visualization
WEEK 2 (~ 3.5h)
32min 40min 1h04 1h Training load : 443
Monday

REST

Active rest, Balanced nutrition, Hydration, Restorative sleep, Mental relaxation, Recovery, Visualization
Tuesday

Swimming – 1800 m

V02 Max
Warm-up: 400m in Z2 Swim of choice
Session:
12 blocks of :
100m in Z5 Fast Full stroke
R = 30 s between each block
Cool-down: 200m in Z1 4 Strokes
Wednesday

Running – 32 mn

V02 Max
Warm-up: 10 min in Z2
Session:
8 x 30 s in Z5, R = 1 min
Cool-down: 10 min in Z1
Thursday

REST

Active rest, Balanced nutrition, Hydration, Restorative sleep, Mental relaxation, Recovery, Visualization
Friday

Strength & Conditioning – 60 mn

Warm-up (10 min)
  • Bodyweight squats, dynamic lunges, a few light jumps.
Session (40 min)
  • Back Squat or Heavy Goblet Squat: 4 sets of 5-8 repetitions (heavy, focus on explosiveness on the ascent).
  • Heavy Dumbbell Front Lunges: 3 sets of 6-8 repetitions per leg.
  • Leg Press: 3 sets of 8-10 repetitions (heavy, controlled descent).
  • Deadlift or Romanian Deadlift (RDL): 3 sets of 6-8 repetitions (moderate to heavy, excellent technique).
  • Weighted Step-ups with weighted vest or dumbbells: 3 sets of 8-10 repetitions per leg.

Rest for 2-3 minutes between each set.

Cool-down (10 min)
  • Static stretches for quadriceps, hamstrings, and glutes.
Saturday

Cycling – 64 mn

Fartlek
Warm-up: 10 mins in Z2
Session:
30 x 30 s in Z5 (150% PMA), R = 1 min
Cool-down: 10 mins in Z1
Sunday

REST

Active rest, Balanced nutrition, Hydration, Restorative sleep, Mental relaxation, Recovery, Visualization

Weekly evolution of the training load and duration in the Ironman Triathlon training plan

This graph illustrates the weekly distribution of the training load (according to the Edwards TRIMP method) and the total training duration (in minutes) over the entire plan. It highlights the gradual progression of loads, the overload and recovery phases, as well as the distribution of training volume over the different weeks. This visualization allows for tracking the evolution of the external load and ensuring compliance with the principles of progressiveness and periodization.

Why follow this ironman triathlon training plan?

A ironman triathlon requires specific preparation if you want to perform. This plan will allow you to:

  • Structure your training by respecting the principles of progressiveness, intensity variation, and active recovery.
  • Develop your qualities of resistance, speed, and ability to link disciplines without loss of efficiency.
  • Strengthen your transitions (especially bike-run), which are often decisive.
  • Integrate nutritional and mental preparation to approach the race with serenity.
It includes:
  • swimming sessions focused on technique, endurance, and open water adaptation,
  • cycling sessions (road or home trainer) working on threshold, PMA, and cadence,
  • running workouts (VMA, fartlek, endurance),
  • brick sessions (bike + run) to optimize your transitions.
  • GPP sessions to work on your muscular strength.
  • Mental preparation sessions to optimize your potential.
  • double training days from the intermediate level
  • active rest: 1 to 3 days / week
This plan is also suitable for those looking for a good compromise between training load and professional/personal life.

Phases of the training program

A good triathlon training plan is based on structured progression. This ironman triathlon program is divided into three key phases, each with a specific objective and adapted content.
This allows for effective development of the necessary physical qualities, while optimizing recovery and final performance.

1. General strengthening phase (weeks 1 to 2)

This introductory phase aims to lay the foundations of the plan. The goal is to consolidate physiological basics while working on technique.

  • Objective: improve fundamental endurance and strengthen the body.
  • Content:
    • Easy runs,
    • Technical work in swimming,
    • Cadence drills on the bike,
    • General physical preparation (GPP) type muscle strengthening sessions.

    2. Specific development phase (weeks 3 to 14)

    This is the core of the program, where we seek to develop the specific qualities necessary for performance on race day.

    • Objective: raise physiological capacities (VO2max, threshold, running economy).
    • Content:
      • Intensive bike sessions: e.g., 3x10' at 85-90% of FTP,
      • Swimming sets at a specific pace (200 to 400 m),
      • Running: short VMA, tempo runs, or threshold pace,
      • Bike-run brick sessions to get the body used to the transition.
    • Weekly volume: on average 5.4h/week.

    3. Tapering phase (weeks 15 and 16)

    The last few weeks are dedicated to active recovery and performance optimization.

    • Objective: reduce the training load to allow the body to assimilate the work done.
    • Content:
      • Progressive decrease in volume,
      • Maintaining a light dose of intensity to keep good sensations,
      • Partial or shortened race simulation (without creating fatigue).

    This three-stage structure is used by the best coaches to maximize gains while avoiding overtraining. It allows you to arrive fresh, confident, and ready to give your best on race day.

    Weekly content and key tips

    Example of a typical week:
    • Swimming: 1 to 2 sessions – technique, endurance, strength, threshold...
    • Cycling / Home Trainer: 1 to 2 sessions – fundamental endurance, PMA, strength, velocity...
    • Running: 2 sessions – fundamental endurance, VMA, threshold...
    • Brick session: every 4 weeks from week 6
    • GPP / core training: 1 session on specific weeks
    • Mental preparation: 1 session on specific weeks
    • Double training days from the intermediate level
    • Active rest: 1 to 3 days / week

    Key tips:
    • Hydrate yourself during all sessions > 1h.
    • Plan for a carbohydrate intake 1h before intense sessions.
    • Alternate terrains (road, trails) to limit injuries.
    • Visualize transitions and repeat your automatisms in real conditions.
    • Go to bed at a fixed time: sleep is your primary recovery tool.

Our other Ironman Triathlon Intermediate training plans

Triathlon Ironman Intermediate 8 Weeks Triathlon Ironman Intermediate 12 Weeks Triathlon Ironman Intermediate 20 Weeks Triathlon Ironman Intermediate 24 Weeks

Frequently Asked Questions

The weekly volume is approximately 5.4 hours per week. The Ironman Triathlon plan adapts to a gentle ramp-up, ideal for intermediate triathletes.

Yes. The plan is structured but flexible: you can swap session days as long as the load and recovery blocks are respected.

Absolutely. The first few weeks include a lot of technique and gentle endurance to progress without pressure. You can also do the sessions in a pool or open water depending on your possibilities.

It is better to resume where you left off rather than compressing. The most important thing is consistency in the long run.

Our Happy Customers

See what customers are saying about us.

This simple and effective training program allowed me to finish my first Sprint Triathlon! Thanks to the whole AthleteSide team

Andreas

Beginner Triathlete
Thank you for this training plan that I adapted a little to my schedule and which helped me achieve my goal.

Lucie Anne

Confirmed Triathlete
I recommend the Beginner M Triathlon training plan over 16 weeks, perfect for preparing for the Deauville Triathlon!

David Pauloux

Beginner Triathlete