If you’re 6 to 16 weeks out from your Ironman, this is the phase where most athletes get it wrong. Not on race day, but right now.

At this stage, your fitness is largely built. Of course it will still improve, but the bigger risk isn’t being underprepared. It’s making decisions that quietly derail everything you’ve already done.

This is the execution phase. Once you know where you stand, the question becomes simple. What are you going to do about it?

1. Stick to the plan or keep changing it?

This is the most common mistake I see.

You start doubting your plan. You see what others are doing, read something online, or hear what your training partners are up to. Suddenly you’re changing sessions, adding intensity, or trying to “catch up”, even though you were not far off in the first place.

Before long, your structured plan turns into guesswork.

If you’re slightly off track, you don’t need a new plan. You need small adjustments. Big changes at this stage rarely make you fitter. More often, they lead to missed sessions, inconsistency, or injury.

Training is, as they say, an act of faith. You’ve done the planning. Now is the time to follow it through.

2. Respect fatigue or push through it?

Feeling tired is normal in this phase of training, but feeling exhausted all the time is not.

There is a long-standing belief in endurance sport that constant fatigue means you are doing it right. In reality, it often means you are digging a hole that will eventually catch up with you.

When you ignore fatigue, things start to unravel. Sleep quality drops, recovery slows, and decision making becomes poor. You start choosing the wrong sessions, the wrong foods, and the wrong priorities. That is when niggles appear and small issues become injuries.

Recovery is not a luxury. It is part of the training process. Planned rest days, very easy sessions, and listening to your body are all part of staying on track.

If you are an athlete in your 40s or 50s, this becomes even more important. Durability is your biggest asset, but only if you protect it.

3. Practice race day or leave it to chance?

Race day should feel familiar, not unpredictable.

That means preparing for what you are actually going to face. The terrain, the conditions, the transitions, the pacing and the nutrition all need to be experienced in training.

You do not need to replicate a full Ironman day, but you do need to expose yourself to the key demands. Swim in open water if that is what your race requires. Ride on terrain that reflects the course. Practice running off the bike so your legs know what to expect.

Pacing is critical, and so is understanding how it feels. If the effort feels “just right” early on, it is probably too hard. If it feels slightly too easy, you are likely in the right place.

Nutrition is another area where many athletes fall down. You cannot guess this on race day. You need a clear strategy, and you need to practice it repeatedly so your gut can handle the load.

Beth and I spoke about this on a podcast. Listen to the whole episode HERE: https://simonward.podbean.com/e/dont-mess-this-up-5-decisions-that-make-or-break-your-ironman/​

4. Fuel properly or train under-fuelled?

This is not the time to be trying to lose weight.

Trying to cut calories while increasing training load is one of the fastest ways to limit your performance. You end up underpowered in sessions and unable to recover properly afterwards.

Your body needs fuel to train, adapt and perform. That means enough carbohydrates to support your workload, enough protein to maintain strength, and consistency in your daily habits.

Nutrition, training and recovery form a simple triangle. If one side is weak, the whole structure becomes unstable.

5. Arrive ready or arrive exhausted?

Picture yourself on the start line.

Do you want to feel heavy, tired and unsure, or fresh, energised and ready to go? That outcome is determined by the decisions you make now.

Many athletes try to cram in more training at the last minute, believing it will give them an edge. In reality, the gains are minimal and the fatigue is high. It is far better to arrive slightly underdone than overcooked.

This is where tapering becomes important. Gradually reduce your training load, protect your energy, and allow your body to absorb the work you have already done.

Fitness is already there. Your job now is to let it show up on race day.

Key Takeaways

• This phase is about decisions, not volume
• Small adjustments beat big changes
• Recovery, fueling and execution matter more than extra training

Final Thought

If things are not perfect right now, do not panic. But do not ignore it either.

The next few weeks are not about doing more. They are about doing the right things, consistently.

Get those decisions right, and race day becomes a very different experience.

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And if you want help turning that into a clear plan, structure and consistent progress, that’s exactly what we focus on inside the SWAT Inner Circle.

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Thanks for being part of the tribe — I’m here to help you stay Battle Ready! Simon