Swimming plateaus are incredibly common, and they almost always come down to one of a handful of fixable problems. Unlike running or cycling, where more effort reliably produces more speed, swimming is a technique-dominated sport. Pushing harder in the water without addressing the real bottleneck often just burns more energy for the same pace. Here are the most likely reasons you’ve stalled and what to do about each one.
Your Body Position Is Creating Drag
The single biggest speed killer in swimming isn’t weak muscles or poor fitness. It’s drag. Water is roughly 800 times denser than air, so even small changes in your body position have an outsized effect on how fast you move. If your hips drop, your knees bend too much on the kick, or your head rides high, you’re essentially pushing a larger surface area through the water with every stroke.
Head position alone makes a measurable difference. Research published in the Journal of Human Kinetics found that swimmers who kept their head down or aligned with their outstretched arms reduced passive drag by 10.4 to 10.9% compared to swimming with the head up. Even a partial correction, like looking slightly downward instead of forward, cut drag by 4 to 5%. That’s free speed with zero extra effort. If you find yourself looking at the wall ahead of you while doing freestyle, you’re likely adding drag without realizing it.
A good check: when you push off the wall in streamline, your body should feel like a straight line from fingertips to toes. If your hips sink the moment you start swimming, that alignment is breaking down. Focus on pressing your chest slightly into the water (sometimes called “pressing your buoy”) to bring your hips up. Film yourself from the side if possible. What feels flat often isn’t.
You’re Spinning Your Arms Instead of Catching Water
Many swimmers try to get faster by turning their arms over more quickly. This works up to a point, but past that point, a higher stroke rate just means you’re slipping through the water without grabbing much of it. Your speed equals your stroke length (how far you travel per stroke) multiplied by your stroke rate (how many strokes you take per minute). If one goes up and the other drops by the same amount, you go nowhere.
The telltale sign: your effort feels much harder, but your times barely budge. That mismatch between perceived effort and actual speed signals that your stroke rate and stroke length are out of balance. The fix is to work on your catch, the moment your hand enters the water and begins pulling backward. A high elbow catch, where your forearm angles down while your elbow stays near the surface, lets you press against a bigger column of water. Think about reaching over a barrel, then pulling yourself past it.
Try counting your strokes per length. If that number creeps up over weeks without your times dropping, you’re losing efficiency. Drills like catch-up freestyle (where one hand stays extended until the other finishes its stroke) force you to slow down and feel the water on each pull.
Your Kick May Be Hurting More Than Helping
The kick in freestyle contributes surprisingly little to forward propulsion, especially at moderate speeds. Research on front crawl swimmers found that the kick’s contribution to overall speed ranged from essentially zero at lower stroke frequencies up to about 11% at higher speeds. Meanwhile, your legs contain the largest muscles in your body, so a big kick burns a disproportionate amount of oxygen and energy for a relatively small speed gain.
This doesn’t mean you should stop kicking. A steady, compact flutter kick keeps your hips high and your body balanced, which reduces drag. But if you’re kicking hard from the knee with stiff ankles, you’re creating turbulence and burning through your aerobic capacity without much payoff.
Ankle flexibility plays a real role here. Swimmers with greater ability to point their toes (plantarflexion) generate more propulsion from the same kick. One study found that restricting ankle flexibility dropped swimming velocity from 1.20 to 1.13 meters per second and reduced kick efficiency measurably. Swimmers with naturally stiff ankles, common in runners and people who spend a lot of time in supportive shoes, can improve over time with regular stretching. Sitting on your feet (a kneeling ankle stretch) for 30 to 60 seconds several times a day gradually increases that range of motion.
You’re Training Hard but Not Training Smart
A common pattern: you swim the same distance, at roughly the same pace, three or four times a week. You feel like you’re working hard. But your body adapted to that stimulus months ago, and now you’re essentially maintaining fitness rather than building it.
Getting faster requires structured variety. That means mixing in interval sets where you swim shorter distances at higher intensity with rest between repeats, tempo work where you hold a challenging pace for longer distances, and technique-focused sessions where speed isn’t the goal at all. If every session looks the same, your improvement will stall regardless of how many laps you log.
Threshold sets are particularly effective for breaking plateaus. These involve swimming at a pace you could hold for about 20 to 30 minutes (uncomfortable but sustainable) in repeated intervals of 100 to 200 meters with short rest. This trains your body to clear lactate more efficiently, which directly translates to holding faster paces for longer.
You’re Neglecting Strength Out of the Water
Dryland training has a genuine, measurable effect on swim performance, particularly on starts and turns, which can account for a significant chunk of your total time in a pool. Studies show strong correlations between lower body strength (measured by squat and jump performance) and the time it takes to reach the 5, 10, and 15 meter marks off the wall, with correlation values as high as 0.85. That means stronger legs translate directly into faster push-offs.
For the pulling motion, exercises like lat pulldowns and pull-ups build the muscles responsible for a powerful catch and pull phase. The key finding from a review of strength training research in swimming: the load needs to be heavy enough to build maximum strength, not just endurance. Light resistance bands and high-rep sets don’t produce the same transfer to the water. Classic compound exercises like squats, bench press, and pulldowns, performed year-round alongside swim training, have consistently shown the best results.
Swimmers with lower initial strength levels tend to see the fastest improvements. If you’ve never done structured strength work, adding two sessions per week can unlock noticeable speed gains within a few months.
You’re Underfueled or Under-Recovered
Swimming burns a lot of calories, partly because of the energy cost of thermoregulation in cool water. If you’re not eating enough carbohydrates, your muscles can’t fully replenish their glycogen stores between sessions, and you’ll show up to each workout already partially depleted. The result feels like a plateau: you can’t hit the paces you used to, your intervals feel sluggish, and you assume you’ve stopped improving.
Competitive swimmers training at moderate to high intensity need roughly 6 to 8 grams of carbohydrate per kilogram of body weight on high-volume days, and as much as 10 to 12 grams per kilogram on days combining high volume with high intensity. For a 70 kg (154 lb) swimmer, that’s 420 to 560 grams of carbohydrates on a normal training day. Most recreational swimmers don’t need the upper end of that range, but many aren’t hitting even the lower end, especially if they’re also trying to lose weight.
Recovery matters just as much as training. Overtraining syndrome exists on a spectrum: first comes short-term fatigue that resolves in days, then a deeper functional overreaching that takes weeks to recover from, and eventually full overtraining syndrome that can sideline athletes for months. Early signs include persistent fatigue, worsened mood, disrupted sleep, and performance that declines despite consistent training. If you feel worse the more you train, the answer is often less volume and more rest, not more laps. Research suggests that even a single week of reduced training can restore the balance between your body’s stress and recovery systems.
You’re Not Working on Turns and Underwaters
In a 25-yard or 25-meter pool, you push off a wall every length. A faster, tighter flip turn with a strong streamlined push-off can shave seconds per 100 without any change to your swimming fitness. Many swimmers treat the wall as a rest point, gliding in slowly and pushing off gently. That habit alone can mask real improvement in your stroke.
After pushing off, your underwater phase (dolphin kicks in streamline) is the fastest you’ll travel during any part of a lap. Plyometric training, such as box jumps and squat jumps, directly improves the explosive power needed for a strong push-off. Combined with good streamline position and a few solid dolphin kicks before surfacing, this is one of the quickest ways to drop time without changing your stroke at all.