Common Individual Medley Race Mistakes (And How to Fix Them)
Most swimmers don’t lose Individual Medley races because they’re not fit enough — they lose them because they keep making the same technical and strategic mistakes. The IM is brutally honest. It doesn’t care how fast your Freestyle is or how polished your Butterfly looks in warm-up. It exposes everything: your weakest stroke, your transitions, your pacing, and your ability to stay composed under fatigue.
Watch great IM swimmers like Michael Phelps or Ryan Lochte and you’ll notice something immediately — they don’t just swim fast, they CONNECT the race seamlessly. Every stroke feeds into the next. Every wall is an opportunity, not a reset. That’s the difference between surviving an IM and racing one.
Here are the most common mistakes swimmers make — and how to fix them so you can start dropping real time.
Why the Individual Medley Exposes Every Weakness
The IM is not just “four strokes in a row.” It’s a constant shift in control, awareness, timing, and energy management from one length to the next. Your body position changes, your breathing patterns adjust, your rhythm changes, and even your energy systems are constantly being challenged throughout the race.
What makes the IM especially difficult is how each stroke places different demands on the body. Butterfly and Breaststroke rely much more heavily on anaerobic power and muscular force production, while Backstroke and Freestyle depend more on aerobic efficiency, rhythm, and recovery management. In other words, the race constantly swings between explosive effort and controlled endurance. If a swimmer doesn’t know how to manage those changes, the race can fall apart quickly.
Most swimmers train each stroke separately and expect everything to magically connect on race day. It doesn’t work that way. The IM punishes disconnected swimming. If your Butterfly is too aggressive, your Backstroke suffers immediately. If your Breaststroke timing collapses under fatigue, your Freestyle turns into survival mode instead of a finishing attack.
Think of the IM like taking four completely different exams back-to-back — with no break in between. You can’t dominate one section and ignore the others. The swimmers who succeed are the ones who understand how to manage the entire race physically, technically, and mentally from start to finish.
The 7 Most Common Individual Medley Race Mistakes
Mistake #1 – Going Out Too Fast in Butterfly
This is the most common IM mistake, and it’s costly. Swimmers attack the Butterfly leg like it’s a 50, trying to “get ahead early,” and they’re paying for it by the 75.
Butterfly in IM is not about dominance — it’s about control. When you over-muscle the opening 50, your stroke shortens, your kick loses rhythm, and lactate builds before the race has even settled. That fatigue doesn’t disappear; it compounds through every stroke that follows.
The fix is learning to swim “relaxed fast.” Hold a strong, consistent tempo, but prioritize efficiency over effort. Focus on clean entries, stable breathing, and a kick that supports your timing. If you finish your Butterfly feeling composed instead of destroyed, you’ve done it right.
Mistake #2 – Poor Backstroke Tempo Management
The transition from Butterfly to Backstroke should feel like a reset in rhythm — not a fight for survival. One of the biggest mistakes swimmers make here is trying to maintain speed with their legs instead of their arms.
As Butterfly fatigue sets in, swimmers often panic-kick to keep momentum alive. The problem is that this burns energy the legs will desperately need for Breaststroke. Strong IM swimmers understand that Backstroke is about maintaining tempo through the arms while allowing the legs to recover slightly before the next stroke transition.
This is where rhythm matters. A slightly faster arm tempo helps maintain momentum without overloading the kick. Instead of forcing speed with power, elite IM swimmers keep the stroke connected and controlled. The goal is to carry speed efficiently into Breaststroke — not arrive there with exhausted legs.
Mistake #3 – Weak or Rushed IM Transitions
This is where races are quietly won and lost — and where most swimmers aren’t paying nearly enough attention.
Transitions are often treated as a formality, something to “get through” rather than maximize. But every transition is a chance to gain free speed, especially when your competitors are sloppy.
The Fly-to-Back transition often gets rushed, leading to poor timing and a weak push-off. The Back-to-Breast crossover can turn into chaos without consistent practice. And the Breast-to-Free turn? That hesitation off the wall is one of the biggest momentum killers on the pool deck.
Transitions need to be trained as skills, not afterthoughts. Practice them in isolation. Feel the timing. Understand where your speed comes from and how to carry it forward. If you want a full breakdown of how to connect each part of your race, check out our IM Turn Series: How to Connect Each Stroke Seamlessly
Clean transitions don’t just look good—they keep your race flowing.
Mistake #4 – Inefficient Breaststroke (The Race Killer)
Let’s be direct: Breaststroke is where most IM races fall apart.
It’s the most technical stroke, the slowest stroke, and the one most affected by fatigue. Swimmers either over-glide and bleed momentum or rush their timing and lose efficiency. Either way, they give up time.
The key is balance. Your glide should be controlled, not exaggerated. Your kick should snap with purpose. And your timing — this is everything — needs to stay consistent even when you’re exhausted. If your kick feels weak or you can’t generate speed, it’s worth examining why your Breaststroke is slow and how to develop a faster, more effective kick.
Strong IM swimmers don’t try to WIN the race in Breaststroke. They aim to HOLD BODYLINE while staying efficient under fatigue. If you can maintain your pace while others start falling apart technically, you’re perfectly set up for the Freestyle finish.
Mistake #5 – Bad Pacing Strategy Across the Race
Swimming all four strokes at the same effort level is one of the biggest strategic mistakes in IM. Each stroke demands something different, and your pacing needs to reflect that.
A smart IM strategy looks more like this:
- Butterfly: controlled and efficient
- Backstroke: build rhythm and maintain speed
- Breaststroke: hold your position
- Freestyle: attack and finish
When swimmers ignore this and try to “go hard everywhere,” they end up fading badly in the final 50. The goal isn’t to feel strong early—it’s to finish strong when it matters most.
Mistake #6 – Weak Underwaters and Breakouts
Underwaters are the fastest you’ll move in the pool. So why do so many swimmers waste them?
In the IM, this problem compounds. Every wall is an opportunity to gain momentum, and every weak breakout is a missed one. Swimmers come up too early, lose their streamline, or fail to connect their underwater speed into their first stroke cycle.
The focus is simple: hold your underwater until your speed naturally starts to drop, then transition smoothly into your breakout — not forced, not rushed, just connected. And it’s not about one great wall. It’s about executing every wall consistently, across all four strokes. If your underwater phase feels weak, building a stronger foundation in Dolphin Kick technique will make a noticeable difference.
Mistake #7 – Mentally Checking Out Before Freestyle
This one isn’t physical — it’s mental.
By the time swimmers hit Freestyle, they’re tired, uncomfortable, and often just trying to survive. That mindset shows immediately. Stroke rate drops. Effort fades. The race slips away.
But here’s the truth: the IM race doesn’t end at Breaststroke — it begins at Freestyle.
The swimmers who win are the ones who can flip the switch. They shift from holding on to attacking. They accept the discomfort and push through it. If you’ve ever wondered why some swimmers always seem to finish stronger than others, we break that down in this race finish breakdown.
Train this mindset. Practice finishing hard when you’re tired. Build the habit of racing the last 50 with intent. Because that’s where the real separation happens.
How to Fix These IM Mistakes in Training
Fixing IM mistakes isn’t about doing more work — it’s about training smarter.
One of the best ways to improve your IM is by swimming “rolling IM” sets that force you to connect strokes while managing fatigue and changing energy demands. A great example is:
8×75 Rolling IM Order:
- Fly → Back → Breast
- Back → Breast → Free
- Breast → Free → Fly
- Free → Fly → Back
Repeat the cycle.
Sets like this teach swimmers how to transition smoothly between strokes instead of mentally resetting every 25. They also expose weaknesses FAST. If your Butterfly destroys your rhythm going into Backstroke, you’ll feel it immediately. If your Breaststroke timing collapses under fatigue, your Freestyle will show it right away.
You can also isolate problem areas. If your transitions are weak, dedicate part of practice to just working walls and breakouts. If your Breaststroke falls apart late in races, train it at the end of sets instead of the beginning.
The goal is simple: make your weaknesses visible in practice so they don’t show up on race day.
Different Coaching Philosophies (And What Actually Works)
Some coaches prefer training each stroke independently, building technique in isolation. Others emphasize IM-specific work, blending strokes together regularly. Both approaches have value — but if you want to race a fast IM, you need to train it as a complete system.
A GREAT Butterfly doesn’t guarantee a great IM. Neither does a strong Freestyle. The magic happens in how everything connects. That’s where races are won.
The Bottom Line: Fix These Mistakes and Drop Time FAST
Improving your IM isn’t about grinding harder workouts or adding more yardage. It’s about fixing the details that matter — your pacing, your transitions, your weakest stroke, and your mindset under pressure.
Pay attention to how your race flows, not just how each stroke feels. Clean up the mistakes, connect the pieces, and the results will follow.
Ready to Take Your IM to the NEXT LEVEL?
If you want a personalized breakdown of exactly where you’re losing time — and how to fix it with precision: Video Analysis Packages
Or if you’re ready to train smarter with a race strategy that actually works: Customized Swim Workouts
The fastest IM swimmers don’t just train harder. They train with purpose.