How to Swim Sense Endurance Style
Most triathletes learned to swim by accumulating drills. Catch-up, fingertip drag, fist drill, kick sets. The assumption is that breaking the stroke into parts and rehearsing each one in isolation eventually produces a better whole. In practice it usually produces athletes who can execute drills competently and still struggle to hold their stroke together at race pace when their shoulders are tired and their legs are carrying two hours of cycling.
The Sense Endurance approach starts from a different premise. Most triathletes who come to swimming as adults need a simpler stroke, built around strength and rhythm, one that holds its shape when it matters. What follows is how I build it.
01 | Why This Approach Works for Triathletes
The average age-group triathlete spends somewhere between two and four hours a week in the pool. That is not much time, and spending a significant portion of it on isolated drill work is a poor use of a limited resource. Drills develop awareness of individual movement components but do not reliably transfer to the full stroke under fatigue. What transfers is repetition of the stroke itself, done with the right cues, with enough resistance to build the strength to hold it.
Triathletes who started swimming later in life also carry different movement patterns than those who grew up in the water. The motor engrams are not the same. Drill-heavy coaching is particularly inefficient for late-starters because drills are designed to refine a foundation that was built in childhood, and they work best when that foundation already exists. For the adult swimmer, the faster route is a stroke that can be learned as a coherent whole, built around body mechanics rather than arm mechanics, and developed through paddle and pull buoy work that forces the upper body to carry the load. I have written about the reasoning behind this in more detail in the article on effective swimming.
The stroke described below has a small number of cues. That is deliberate. A swimmer thinking about eight technical points simultaneously is not swimming. The aim is to internalise a few key positions and movements until they become automatic, then build the strength to hold them under the pressure of a race.
02 | Head Position and Hand Entry
Everything else in the stroke depends on where the head sits. A head that is too high lifts the chest and drops the hips, increasing drag immediately. A head that sits too low disrupts breathing rhythm and breaks the body line. The neutral position keeps the hairline at or just above the water surface with the eyes angled down and slightly forward, the neck relaxed. When this is right, the body from head to hip sits as a single line through the water.
Hand entry follows directly from that alignment. The hand enters in line with the shoulder, not wider and not crossing the centreline. Wider than shoulder-width creates a lateral pull that disrupts body rotation at the wrong moment. Crossing the centreline causes the hips to snake and wastes energy stabilising against that movement. In line with the shoulder, the hand enters cleanly, sets up the catch efficiently, and allows the body rotation that drives the rest of the stroke to happen as it should.
03 | The Recovery: Cricket Pitcher, Not Boxer
This is where the Sense Endurance stroke diverges most clearly from what most triathletes have been taught. The standard coaching cue for arm recovery emphasises hip rotation driving the arm forward, like a boxer throwing a punch from the hip. The problem with that image is that it directs energy forward along the surface of the water, which is where the arm is already going. What you want is energy directed down and forward into the water, and the body mechanic that produces this most effectively is a straight-arm overhead recovery that uses the torso like a cricket pitcher throwing the ball forward and downward.
As the arm exits the water it stays straight, swinging forward and overhead, extending as far as it will go in line with the shoulder. The torso rotates to drive that extension. The energy is directed down into the water on entry rather than along the surface. This engages the core and shoulders far more directly than a hip-driven recovery and produces a stroke that becomes more powerful as upper body strength develops, rather than one limited by how far the hips can rotate.
The practical check is whether the arm is genuinely straight on recovery and whether the forward extension is full. Athletes who are tight across the shoulder will shorten the extension without realising it. Building that range of motion through straight-arm work is part of developing this stroke over time.
04 | Pressing Down and Holding Rhythm
After hand entry, many swimmers pause. This is the glide phase that appears in almost every beginner swimming education, and it is one of the first things I remove. For a triathlete swimming at race pace, the glide creates a dead spot in the stroke cycle: the body decelerates, momentum drops, and the next stroke has to rebuild against more resistance. Multiply that across 1,900 metres and the energy cost is considerable.
The cue is to press down immediately as the hand enters the water. The hand pushes straight down, moves toward the belly button, and in doing so bends the elbow naturally and sets the arm in the correct catch position without requiring the swimmer to think about elbow angle separately. From the belly button, the arm drives back toward the hip. The push phase uses the body rotation generated by the opposite arm's recovery to extend reach and add power to the exit.
The result is a stroke with no dead spots. As one arm enters and presses down, the other is completing its push and exiting at the hip. This continuous cycle is what generates the sensation of moving through the water rather than pulling through it, and it is the quality that holds best when fatigue accumulates. The cues are positional and sequential: enter, press down, belly button, drive to hip, exit straight. An athlete can rehearse this sequence mentally before a session and check against it at intervals during a long effort. The article on form under fatigue covers the broader principle of holding technique under load, which applies as much in the water as on the run.
05 | Strength Tools: Pull Buoy and Paddles
Building this stroke requires upper body strength, and the most direct way to develop it is to remove the legs from the equation and add resistance to the arms. The pull buoy sits between the thighs and keeps the hips elevated without leg effort, allowing full attention to go to the stroke. Paddles increase the surface area of the hand, adding resistance and requiring the shoulders and upper back to work harder with every stroke.
The pull buoy and paddles should form a significant part of swim training for most triathletes, used as the primary tool for building stroke capacity rather than as an occasional variation. The paddles I use with athletes are larger than standard because the purpose is strength development. A smaller paddle gives more sensation about hand position. A larger paddle makes you stronger. Strength is what matters at 1,500 metres into a race.
The practical guidance is straightforward: if stroke mechanics hold with the paddles on, use them for the majority of the session. If mechanics break down under that load, reduce the set length or drop to the pull buoy alone until the strength supports it. The principle is progressive overload of the upper body, the same logic that applies to strength work in any other discipline. Consistent work with these tools across a season produces a measurably different swimmer to one who trains with neither.
06 | Taking It Into Open Water
The stroke mechanics described above do not change in open water, but the environment they operate in does. Sighting becomes necessary, which means periodically lifting the eyes to check direction. Done well, sighting integrates into the breathing pattern without disrupting rhythm: the head lifts on the inhale, the eyes find the reference point, the head returns to neutral on the exhale. Done poorly, it creates exactly the drag problem that neutral head position is designed to avoid, and it happens repeatedly across the length of the swim.
A consistent, rhythmic stroke also makes drafting more accessible. Sitting on the feet of a faster swimmer requires matching their cadence, which is easier with a continuous stroke cycle than one that includes a glide and a reset. Athletes who have built their swimming around rhythm and strength tend to adapt to the drafting position more naturally than those whose stroke depends on the clarity of a pool lane.
The open water removes lane ropes, black lines, and predictable distances. An athlete who has developed confidence in the mechanics rather than reliance on pool structure makes that transition without the swim becoming a source of anxiety before the bike has even started.
Swimming in triathlon rarely gets the coaching attention it deserves. Most athletes address it through more volume or more drills, and neither reliably moves the needle. If you want to work with a coach who builds your swim around mechanics and tools that carry into racing, Sense Endurance Coaching is where to start.
If you are preparing from a training plan, the swim sessions are built on the same principles described above, with pull buoy and paddle work integrated throughout. You can see the full range on the training plans page. A stronger stroke does not require more time in the water. It requires better use of the time already there.