How many laps in a pool is a mile?

You've decided to swim a mile. You pick a lane, settle your goggles and push off, and somewhere around the twentieth length the questions arrive. Is a lap one length or two? Does this pool measure in yards or meters? And is the 66-length "mile" on the swim team's board really a mile? How many laps in a pool is a mile depends on all three, and once you know the numbers, the counting gets much easier.

Losing count halfway through a swim is maddening, and so is finishing what you thought was a mile only to learn you were 6 lengths short. Small doubts like that make it harder to set a goal and see your progress, and progress you can see is what keeps you coming back to the pool.

Below you'll find the lengths and round trips for every common pool, what counts as a lap, why swimmers call 1,650 yards a mile, how long a mile swim takes at different speeds, how a swimming mile compares with running one, and a first-mile set that makes the counting easy.

How Many Laps Is a Mile Swim?

A mile swim is about 70 laps in a 25-yard pool, 64 in a 25-meter pool and 32 in a 50-meter pool, counting each length as a lap. A mile is 1,760 yards. It's also exactly 1,609.344 meters, because a foot has been defined as exactly 0.3048 meters since 1959, as the National Institute of Standards and Technology explains. Divide the mile by your pool's length and you have your count:

Lengths are 1,760 yards (1,609.344 meters) divided by the pool's length, and a round trip is two lengths.

For any other pool, divide 1,760 by its length in yards or 1,609 by its length in meters. If you're not sure how long your pool is, ask at the front desk. A 25-meter pool is about 7 feet longer than a 25-yard pool, which is hard to see from the water but adds up to 6 fewer lengths over a mile.

How many laps in a 25-yard pool is 1 mile?

A mile in a 25-yard pool is 70.4 lengths, so 70 lengths and then 10 more yards, which is 35.2 round trips. Swimming 70 lengths leaves you 10 yards short and 71 leaves you at the far wall, so the tidy choice is 72 lengths. That's 1,800 yards, a little over a mile, and it finishes at the wall where you started. It also splits evenly into 18 sets of 100 yards, which makes counting easier.

Lap or Length: What Counts as a Lap in Swimming?

A length is a single swim from one end of the pool to the other, and a lap is where the confusion starts. Competitive swimmers and coaches generally count lengths and call them laps, while many recreational swimmers say a lap means down and back. Both uses are common, so two people can swim the same mile and report 70 laps and 35 laps.

This page counts lengths, because a length always means the same distance. If your pool or your watch counts laps, check which one it means by swimming a known distance: in a 25-yard pool, 4 lengths is 100 yards. Swim workouts are usually written in distance, such as 100s and 200s, which gets around the problem entirely.

How Many Yards Is a Mile in Swimming?

A true mile is 1,760 yards, but in U.S. pool swimming "the mile" usually means the 1,650-yard freestyle. US Masters Swimming lists the 1,650 as the longest freestyle event in yards pools and the 1,500 meters as the longest in meters pools. In a 25-yard pool the 1,650 is 66 lengths, or 33 round trips.

Why the swimmer's mile is 1,650 yards

The 1,650 yards works out to 1,508.76 meters, within a few meters of the 1,500 meters swum in metric pools, and it fits a 25-yard pool exactly at 66 lengths. That makes the two events counterparts. Neither is a full mile, though. The 1,650 is 110 yards short, about 6 percent, and the 1,500 meters is 109 meters short. So if your plan says "swim a mile", decide first whether you mean a real mile or a swimmer's mile, since the gap is more than 4 lengths of a 25-yard pool.

How many meters is a mile swim?

A mile swim is 1,609 meters, which is 64 lengths plus 9 meters in a 25-meter pool or 32 lengths plus 9 meters in a 50-meter pool. Swimmers who train in meters usually treat the 1,500 meters as their mile. That's 60 lengths of a 25-meter pool or 30 lengths of a 50-meter pool.

How many yards are there in 1.2 miles of swimming?

There are 2,112 yards in 1.2 miles of swimming, or 1,931 meters. That's the swim leg of a half-distance triathlon such as a 70.3, and it works out to 84.5 lengths of a 25-yard pool, 77 lengths of a 25-meter pool or about 38.5 lengths of a 50-meter pool. The 2.4-mile swim of a full-distance triathlon is twice that: 4,224 yards, or 169 lengths of a 25-yard pool.

What Is the Length of an Olympic-Sized Swimming Pool?

An Olympic-sized swimming pool is 50 meters long. US Masters Swimming's guide for new swimmers calls 50-meter pools long course, sometimes known as Olympic-sized, and notes that the standard short-course competition pool in the United States is 25 yards. The guide adds that 25-meter pools are standard overseas and are about 7 feet longer per length than 25-yard pools.

Pool length changes your count more than anything else. A mile is 32 lengths in an Olympic pool, half the 64 of a 25-meter pool, and each of those lengths is twice as long a stretch between walls. Every wall gives you a push-off and a moment of glide, so the same swimmer usually covers 100 meters a little more slowly in a long-course pool than in a short one.

How Long Does It Take to Swim a Mile?

Swimming a mile takes about 35 minutes at a steady 50 yards a minute, and anywhere from about 20 minutes to an hour depending on your speed. A good open reference for swimming speeds is the 2024 Adult Compendium of Physical Activities, the standard reference researchers use to rate the energy cost of activities (Herrmann and colleagues, 2024). It describes freestyle at four speeds, which turn into these mile times:

Times assume steady swimming with no rests. A 25-meter length is about 9 percent longer, so add 2 to 5 seconds per length in a metric pool.

If you swim steady laps for fitness, the slow and medium bands are the realistic range: about 35 minutes to an hour for a full mile, and a few minutes less for the 1,650. Rests add to that. Stopping for 20 seconds after every 100 yards adds about 6 minutes to a mile.

What is a good time to swim a mile?

A good time to swim a mile is under 35 minutes for a fitness swimmer, which means holding 50 yards a minute, or 2 minutes per 100 yards. Under 25 minutes puts you in the Compendium's fast band, and elite distance swimmers hold more than 90 yards a minute for the whole race. If you're new to swimming, finishing a mile at all, rests included, is a good result, and your time will drop as your stroke gets more efficient.

What is the average swimming speed?

Average swimming speed for recreational freestyle is about 1 to 1.7 miles per hour, going by the Compendium's slow and medium bands of 30 to 50 yards a minute. A fast lap swimmer moves at about 2.6 mph and an elite distance swimmer at over 3 mph. On land, the fastest group's average normal walking speed in a meta-analysis of 23,111 adults was about 3.2 mph (Bohannon and Andrews, 2011), so an ordinary walk is roughly twice as fast as an ordinary swim.

Is Swimming a Mile Harder Than Running a Mile?

Yes, by a wide margin. Mile for mile, swimming takes roughly 2.5 to 3.5 times the energy of running, because water is about 800 times denser than air and you push it out of the way with every stroke. The Compendium makes the comparison easy, because it rates every activity in METs, where 1 MET is the energy you use sitting still.

Swimming a mile at a medium 50 yards a minute takes 35 minutes at 8.0 METs, which is about 280 MET-minutes. Running a mile at a 10-minute pace takes 10 minutes at 9.3 METs, or 93 MET-minutes, and walking it at 3 mph takes 20 minutes at 3.8 METs, or 76. So that swim costs about 3 times the run and 3.7 times the walk. A fast swimmer at 75 yards a minute spends a little less per mile, about 2.6 times the run, and a slow swimmer at 30 yards a minute spends the most, about 3.7 times.

You may have heard that a mile in the pool equals 4 miles on the road. By these numbers it's closer to 3 for a steady swimmer. Our page on how many calories swimming burns turns METs into calories by body weight, and our look at whether swimming counts as cardio explains why your heart rate reads lower in the water even when the work is hard.

Time is the other big difference. Most recreational runners cover a mile in 9 to 13 minutes, while a fitness swimmer in the Compendium's slow or medium band needs about 35 minutes to an hour. That's why a swimming mile is a full workout on its own, while a running mile is often just the warm-up. If you run as well, our page on how many laps around a track is a mile does the same counting for the track.

How much swimming equals 10,000 steps?

About 40 to 65 minutes of steady lap swimming, roughly a mile to a mile and a half, takes the same energy as walking 10,000 steps. Ten thousand steps is about 4 to 5 miles, which takes 80 to 100 minutes at an ordinary 3 mph. At the Compendium's 3.8 METs for walking at that pace, that's about 300 to 380 MET-minutes. Swimming laps at 5.8 to 8.0 METs uses the same amount in about 40 to 65 minutes.

How Long Does It Take to Swim a Mile in Open Water?

Expect a mile in open water to take longer than the same mile in a pool, at least at first. There are no walls to push off, no lane lines or black line to follow, and you lift your head every few strokes to see where you're going. Waves and currents can cost or save minutes, so time your first open-water mile instead of assuming your pool time. The Compendium rates general lake, ocean and river swimming at 6.0 METs.

Open water is also where swimming carries the most risk. About 4,000 people die from unintentional drowning in the United States every year, according to the Centers for Disease Control and Prevention. Swim your open-water miles with a group or at a guarded beach, wear a brightly colored cap so boats and spotters can see you, and stay close to shore until you know the water.

How to Swim Your First Mile

If you can't swim a few lengths in a row yet, start with our swimming workout for beginners, which builds up from single lengths with rests. Once you can swim for 10 minutes or more without stopping, try this mile set in a 25-yard pool:

• Swim 18 x 100 yards. Each 100 is 4 lengths, with 20 to 30 seconds of rest at the wall after it. That's 72 lengths and 1,800 yards, just over a mile, and you finish at your starting wall.
• Count hundreds, not lengths. Say the number of the 100 you're on each time you push off from the start wall, so you only track 18 numbers instead of 72.
• Start easy. Swim the first few hundreds slower than feels necessary, and take a longer rest whenever you need one.
• Cut the rest before you cut the sets. Take 5 seconds off each rest from week to week. When the rests feel short, join pairs into 200s, then 300s, until you swim the mile without stopping.
• In a 25-meter pool, swim 16 x 100 meters plus one more length for a full mile, or 15 x 100 meters for the 1,500.

What This Means for You

Keep three numbers in your head: about 70 lengths in a 25-yard pool, 64 in a 25-meter pool and 32 in a 50-meter pool. Decide whether you're swimming a real mile or the 1,650, count in hundreds and time yourself once a month. A first mile with rests usually comes long before a first mile without them, and both are worth celebrating.

What decides whether you get there is whether you keep showing up, week after week, through busy stretches and cold mornings. Willpower alone rarely carries that. Matt, a FitCraft user, described the change that matters most: "The real win is I actually want to work out now. That's never happened before."

Pool time also depends on pool hours. For the days you can't get there, a home workout app with no equipment can keep your routine going. In FitCraft, 3D AI coaches demonstrate every exercise and your coach calls you by name during the workout. Streaks and a new quest every month give you a reason to come back, and your workouts adjust as you progress.