You're standing at the baseline of your high school gym. Which means again. Now, counting laps in your head. Wondering — is this four? Five? Did I already do the weird short side?
Most of us have been there. And most of us have googled the answer at least once.
Here's the short version: it depends on the gym. But if you're walking a standard high school basketball court, you're looking at roughly 18 to 20 laps per mile.
Let's break down why that number shifts — and how to figure out your* gym without guessing.
What Is a "Gym Lap" Anyway
When people say "laps around the gym," they almost always mean walking or running the perimeter of a basketball court. That said, not the track. So not the hallway. The actual hardwood (or rubber, or tile) rectangle where games happen.
A lap is one full circuit around the outside boundary. Baseline to sideline to baseline to sideline — back where you started.
Sounds simple. But gyms aren't standardized the way tracks are. A regulation track is 400 meters. Worth adding: gyms? Period. They vary by age, region, budget, and whether the architect had a bad day.
The two main court sizes you'll run into
High school (NFHS) courts run 84 feet long by 50 feet wide. That's the most common size in the U.S. for school gyms, rec centers, and a lot of church leagues.
College and pro (NCAA/NBA) courts stretch to 94 feet long by 50 feet wide. Ten extra feet of length. Doesn't sound like much — but over a mile, it adds up.
There's also junior high* courts (74 x 42), elementary* (sometimes smaller), and FIBA* international courts (91.86 x 49.21 feet — because of course metric exists).
But 90% of the time, you're dealing with one of the first two.
Why It Matters / Why People Care
You're not counting laps for fun. You're doing it because:
- You're training for a 5K and the weather's garbage
- Your doctor said "walk 30 minutes a day" and the gym's open at 6 a.m.
- You're a coach trying to condition a team without a track
- You're rehabbing an injury and need controlled distance
- You're that person* who paces during your kid's basketball practice and wants credit for it
Whatever the reason, accuracy matters. Because of that, 4, your pacing gets messed up. Now, your confidence takes a hit. Which means if you think you're doing 3 miles but you're actually doing 2. And if you're following a training plan, you're undertraining without knowing it.
I've seen runners show up to a race thinking they've been hitting 30-mile weeks — only to realize their "gym miles" were 15% short. Consider this: that's not a rounding error. That's a different workout.
How It Works (The Math You Can Actually Use)
Let's do the numbers. Day to day, once. Then you can stop guessing.
Perimeter formula
Perimeter = 2 × (length + width)
That's it. One lap = one perimeter.
High school court (84 × 50 feet)
Perimeter = 2 × (84 + 50) = 2 × 134 = 268 feet per lap
One mile = 5,280 feet
5,280 ÷ 268 = 19.7 laps
Call it 19.Consider this: 7 laps per mile. Or 20 if you're rounding up for sanity.
College/pro court (94 × 50 feet)
Perimeter = 2 × (94 + 50) = 2 × 144 = 288 feet per lap
5,280 ÷ 288 = 18.33 laps per mile
So on a longer court, you're doing 18.3 laps per mile.
Quick reference table
| Court Type | Dimensions | Feet per Lap | Laps per Mile |
|---|---|---|---|
| Elementary / Junior High | ~74 × 42 ft | ~232 ft | ~22.And 8 |
| High School (NFHS) | 84 × 50 ft | 268 ft | 19. 7 |
| College / NBA | 94 × 50 ft | 288 ft | 18.Now, 3 |
| FIBA (International) | 91. 86 × 49.21 ft | ~282 ft | ~18. |
What about the "inside" lap?
Some people walk inside* the boundary lines — cutting the corners, basically. Don't.
Continue exploring with our guides on how many oz is half a cup and 40 000 a year is how much an hour.
If you're 3 feet off each wall, you're shaving ~24 feet per lap. Because of that, **Walk the lines. ** Touch the wall if you have to. Still, over a mile, that's nearly a full lap of difference. Consistency beats shortcuts.
Converting to meters (because some of you think in metric)
1 mile = 1,609.34 meters
- High school lap = 268 ft = 81.7 meters
- College lap = 288 ft = 87.8 meters
So:
- 1 km ≈ 12.2 laps (HS) or 11.4 laps (college)
- 5K ≈ 61 laps (HS) or 57 laps (college)
Yes, that's a lot of laps. Bring a podcast.
Common Mistakes / What Most People Get Wrong
1. Assuming all gyms are the same size
They're not. Measure yours. Once. Here's the thing — i've measured gyms in the same district that differed by 6 feet because one was built in 1962 and the other in 1998. Write it on a sticky note by the water fountain.
2. Counting "down and back" as one lap
Down and back = two laps. A lap is a full loop. This trips up so many people. If your coach says "10 laps," they mean 10 full circuits. Not 5 down-and-backs.
3. Using a pedometer or watch indoors
GPS doesn't work inside. *Don't trust your Garmin in a gym.In real terms, ** It'll tell you 1. Accelerometers sort of work — but they're calibrated for running stride, not walking pace, and they drift badly on short, sharp turns. 2 miles when you did 0.9.
4. Forgetting the corners
You're not running a straight line. You're making four 90° turns per lap. *Stay consistent.It also means your effective distance is slightly longer if you swing wide — or shorter if you cut tight. Because of that, that slows you down. ** Pick a line and stick to it.
5. Thinking "laps around the gym" includes the bleachers
It doesn't. Unless you're actually* running up and down the bleachers — which is a whole different workout (and a brutal one). Perimeter only.
Practical Tips / What Actually Works
Measure it yourself (takes 2 minutes)
Grab a 100-foot tape measure — or a measuring wheel if your school has one. Walk the perimeter. Write down the number
Walk the perimeter. This leads to divide 5,280 by that number. Also, that's your laps-per-mile. Write down the number. In real terms, tape it to the wall. Done.
Use a clicker or tally counter
Your brain will fail you at lap 37. In practice, click every time you pass your starting mark. A $3 mechanical clicker from a hardware store solves this. No mental math, no losing count, no "wait, was that 42 or 43?
Pick a landmark, not a number
"Ten more laps" is abstract. "Until the second quarter starts" or "through three podcast episodes" isn't. Practically speaking, anchor your workout to something external. Time passes differently when you're not watching it.
Alternate directions every session
Clockwise Monday, counterclockwise Wednesday. It balances the torque on your ankles, knees, and hips from always turning the same way. It also breaks the monotony — the gym looks different in reverse.
Hydrate before, not during
Stopping at the water fountain every four laps kills momentum and adds "ghost distance" to your log. In real terms, drink 16 oz beforehand. If you're under 60 minutes, you don't need mid-walk water. You need discipline.
Log it like it matters
Because it does. Because of that, you'll see your pace improve. Patterns emerge. A simple notebook: Date | Court Type | Laps | Time | How You Felt. Still, you'll notice the days you slept poorly. You'll have proof you showed up — and that's the only metric that actually counts.
The Bottom Line
A mile is 5,280 feet. A high school gym lap is 268 feet. That's 19.7 laps. College? 18.3. Elementary? Nearly 23.
The court size changes. The math doesn't.
Measure once. Count honestly. Walk the lines. Show up tomorrow.
The laps don't walk themselves.
