Freestyle vs. Butterfly: Which Stroke Wins for Speed?

Imagine you're at a meet, staring at the heat sheet. You've got a choice: swim the 100 free or the 100 fly. You know freestyle is faster, but you've heard butterfly builds character. Which one do you pick? This isn't just about medals—it's about what you want out of the sport. Let's break down the two strokes head-to-head.

The Contenders: Freestyle and Butterfly

Freestyle is the front crawl—the fastest stroke in the pool (Britannica). It's what you swim in the 50, 100, 200, 400, 800, and 1500, plus relays. Butterfly is the second-fastest, but it's a different beast: both arms recover simultaneously over the water, and your legs kick together in a dolphin motion (World Aquatics). Butterfly evolved from breaststroke in the mid-20th century and became an Olympic stroke in 1956 (Britannica).

Speed and Efficiency

If you want raw speed, freestyle wins. The front crawl is the fastest stroke, period (Britannica). In the 100 free, the world record is 46.40 seconds (Reuters). Butterfly is slower—generally a few seconds behind over the same distance. Why? The simultaneous arm recovery creates more drag, and the undulating body movement burns more energy. For a sprint, freestyle is the obvious choice.

Rules and Technique

Butterfly has stricter rules. You must keep both arms moving together, kick with a dolphin motion, and touch with both hands at turns and the finish (World Aquatics). A single butterfly kick is allowed on the first kick after each start and turn, but that's it (World Aquatics). Freestyle is more forgiving: you can swim any style except in medley events, and you just need to touch the wall at turns (World Aquatics). For a beginner, freestyle is easier to learn and less likely to get you disqualified.

Training Value

Here's where butterfly shines. It's often called the most difficult stroke to master (Britannica). The physical demand builds upper body and core strength, and it forces you to work on body position. If you can swim a 200 fly without falling apart, your freestyle will improve. But don't make butterfly your primary stroke if you're aiming for national-level freestyle times—the technique differences are too big. Use butterfly as a training tool, not your race stroke.

Who Should Choose Which?

Choose freestyle if you want to win races. It's the most common stroke in the Olympic program, with events from 50 to 1500 meters (Olympic swimming pool specifications). Choose butterfly if you want to stand out in a less crowded field, or if you're a distance swimmer who needs strength. For most swimmers, freestyle is the better bet. But butterfly is worth learning for the challenge.

The Verdict: Freestyle for Racing, Butterfly for Development

If you're racing to win, freestyle is your stroke. It's faster, easier to execute, and more forgiving. But if you want to become a more complete swimmer, include butterfly in your training. The strength you build will pay off in your freestyle. So, at your next meet, swim the free. But in practice, don't skip the fly.

Quick tip: When swimming butterfly, focus on keeping your body flat and your kick tight—don't overdo the undulation.

Sources

• World Aquatics - https://www.worldaquatics.com
• Britannica: Swimming sport - https://www.britannica.com/sports/swimming-sport
• Britannica: Butterfly (swimming) - https://www.britannica.com/sports/butterfly-swimming
• Reuters: Pan Zhanle 100m freestyle world record - https://www.reuters.com/sports/olympics/swimming-chinas-pan-obliterates-100m-freestyle-world-record-gold-2024-07-31/
• Olympic swimming pool specifications (Wikipedia) - https://en.wikipedia.org/wiki/Olympic-size_swimming_pool