Running’s not just about putting one foot in front of the other. For those of us who like to keep things interesting (or maybe torture ourselves, depending on your mood), interval running really shakes things up.
These quick bursts of speed mixed with slower recovery turns a simple jog into a high-intensity adventure.
That’s where fitness trackers come in. Think of them as your over-enthusiastic gym buddy, only wrist-sized and way less judgy about our snack choices.
Fitness trackers for interval running help us track rounds, measure heart rate, and actually keep tabs on workout stats that would otherwise just float around in our heads. They beep, buzz, and sometimes even cheer us on when we’d rather not admit we’re walking instead of sprinting.
The main things we look for? Accurate interval timers, a comfy fit, controls that don’t require a PhD, and a display that doesn’t disappear in sunlight.
Some trackers come loaded with bells and whistles, but if we can’t figure them out while gasping for air, they’re just annoying. Nothing kills a run faster than squinting at a screen and pressing all the wrong buttons.
We spent hours digging into the most popular fitness trackers to find out which ones actually make interval running smoother—and maybe, dare I say, more fun.
Best Fitness Trackers for Interval Running
Let’s be real—counting seconds in your head while sprinting is not exactly fun. Luckily, we’ve rounded up the best fitness trackers so all of us can run, rest, and repeat without turning into human stopwatches.
Here are our top picks to make interval running a bit smarter (and maybe a little less sweaty).
BSLIZHEN Fitness Tracker C60
If you’re after a tracker that doesn’t empty your wallet but still tracks every move (and sleep), this could be your next training buddy.
Pros
- Screen is crisp, colorful, and easy to read—no squinting required
- Real-time health stats like heart rate and blood oxygen make us feel like pro athletes
- Custom watch faces let us pretend we’re style icons, at least at the gym
Cons
- First-time setup with the app and device pairing can be confusing
- Touchscreen needs a gentle touch—slapping it doesn’t help, trust us
- Watch face is neither tiny nor massive, so it may not suit those who want either extreme
When we opened the box, we immediately noticed how lightweight the BSLIZHEN feels. It hugs the wrist without screaming “look at my tech!”
The 1.1-inch AMOLED screen stands out, staying bright and clear outside, even when the sun tries to ruin our intervals.
Navigating menus took a couple of tries. Turns out, a gentle tap works better than aggressive poking.
Getting started felt like a scavenger hunt for Bluetooth settings and new apps. We followed the not-so-clear manual, spent a few minutes on setup, but finally got the phone and tracker to sync.
The “Keep Health” app won’t win any design awards, but it tracked our splits, steps, and even sleep without any fuss.
For interval running, we kept an eye on heart rate and recovery between sprints. It tracked our stats and nudged us if we slacked on activity or skipped water breaks.
Customizing the watch face became a mini-game, and yes, we put our dog’s face on it for motivation. All in all, this tracker handled interval sessions with more consistency than our motivation for early morning runs.
Fitbit Inspire 3 Fitness Tracker
If you want a simple, no-fuss way to crush interval runs (and sneakily check your stress), this tracker fits in perfectly.
Pros
- Lightweight and almost invisible on the wrist
- Tracks intervals, heart rate, stress, and sleep surprisingly well
- Battery life that just keeps going
Cons
- Needs your phone for GPS, so forget about leaving it at home
- Some features want a Premium subscription (our wallets sigh)
- Syncing the first time made us feel like our grandparents with new tech
We strapped on the Fitbit Inspire 3 and almost forgot it was there—which is perfect for interval running.
Our arms didn’t get bogged down by a heavy watch, and it counted intervals without any drama.
After a few days, checking heart rate zones during sprints and seeing recovery stats turned us into data nerds.
Honestly, the sleep tracking is so detailed, it’s almost spooky. We started bragging about our “sleep score” in group chats.
The stress alerts help, but having to keep our phones nearby for GPS tracking made us grumble during “hands-free” jogs.
Battery life is solid, with Inspire 3 lasting over a week before needing a charge.
The downside? Some cool features hide behind Fitbit Premium, so we’re forced to pick between fancier stats and, well, another coffee.
Still, for anyone starting interval running (and wanting a bit of everything else), this gadget is a friendly, approachable pick.
ENGERWALL Simple Fitness Band
If you want a fitness tracker that covers the basics for interval running without costing your next paycheck, this ENGERWALL tracker might do the trick.
Pros
- Lightweight and slim—you’ll almost forget it’s there
- Handles sweat, rain, and accidental splashes like a champ
- Tracking steps, heart rate, and sleep is simple
Cons
- The screen is small, which gets tricky when your vision blurs post-workout
- Interval features could use more tuning for serious runners
- App notifications can get annoying if you don’t tweak the settings
Putting this band on, we were surprised by how thin and comfortable it feels. It’s far from a wrist computer, but for quick runs or walks, the lightweight design made us forget we had it on.
It even handled a trip into the pool or a sweaty sprint session, so we stopped worrying about summer storms.
ENGERWALL tracks steps, heart rate, and even sleep—just the basics, which honestly can be nice.
Plugging it straight into a USB port to charge means we never have to hunt for a special cord.
The screen feels tiny, especially in the middle of tough intervals when we want to check stats at a glance.
And while it tracks intervals, don’t expect Olympic-level training modes.
The app buzzes with notifications unless you dig into the settings, so keep that in mind unless you want to know about cousin Greg’s Facebook post every time you hit your stride.
Garmin Forerunner 55
If you want your interval runs tracked so well that even your excuses can’t hide, the Garmin Forerunner 55 is the watch you need.
Pros
- GPS is impressively reliable for tracking intervals
- Personalized workout suggestions keep us guessing
- Battery life is so good we forget where we put the charger
Cons
- Screen feels tiny if your eyesight isn’t great
- Buttons can feel a bit old-school
- No music storage, so your running playlist stays in your head
Strapping on the Forerunner 55, we remembered why Garmin is a runner favorite. This watch tracks intervals with almost spooky accuracy, leaving no wiggle room for skipping sprints.
The daily suggested workouts make it feel like the watch is our coach—and a pretty chatty one.
We love setting up HIIT and breathwork profiles. Now our “breaks” during an interval run come with actual data to show how hard we’re breathing (spoiler: it’s a lot).
Battery life really stands out—two weeks between charges means we spend more time running and less time looking for cables.
If you want to check stats mid-run and your vision isn’t perfect, the small text on the screen can be a pain.
No music storage means we’re humming to ourselves, which might scare off the neighbor’s dog.
Even so, when it comes to interval tracking, the Garmin Forerunner 55 keeps us honest and moving.
Amazfit Active 2
If you want a stylish tracker that nails the basics and doesn’t make you charge it every night, the Amazfit Active 2 is a smart pick for interval runners who care about looking good mid-sprint.
Pros
- Sharp stainless steel style works with gym shorts or dinner jackets
- Battery life is long enough to survive our forgetfulness
- Free offline maps so we never lose track on a new route
Cons
- Some features take time to figure out
- The app’s voice assistant tries to help, but doesn’t always nail it
- Lacks the deep running metrics that hardcore runners might crave
The bright, clear screen stands out, even when the sun’s trying to turn us into squinty messes on the track.
The stainless steel body feels premium and stays comfortable during long interval sets.
Built-in mapping is a real win. When we run a new trail, we get turn-by-turn directions and don’t end up lost (again).
Battery anxiety? Didn’t happen here—we ran, tracked, and forgot the charger all week.
There’s a learning curve for some of the fancier features. And while the Zepp Flow AI tries to be Siri’s cool cousin, it stumbles on complicated voice commands, especially when we’re out of breath.
Advanced running data isn’t its strong point, so runners who geek out over every heartbeat might want to look elsewhere.
If you want a good-looking, no-nonsense fitness tracker that can keep up with your interval running (and maybe your busy social life), the Amazfit Active 2 fits the bill without wrecking your budget.
FITVII FINO 2 Slim Tracker
Looking for a tracker that’s easy to use and covers the basics (plus a few surprises) for interval running without draining your wallet? This one deserves a peek.
Pros
- Feels comfortable and lightweight during long runs
- Handles steps, heart rate, and those frantic interval pace shifts pretty well
- Affordable, so our wallets can breathe again
Cons
- Blood pressure readings are a head-scratcher (use with a grain of salt)
- GPS isn’t built-in—we have to drag our phone along for mapping
- Light-colored bands pick up dirt about as fast as we pick up sweat
When I strapped this on, I noticed right away how slim and comfy it feels. It just sits there, no bouncing around during sprints—which is great, since nobody wants a fitness tracker flying off mid-burpee.
Navigating the touch screen feels smooth. I actually enjoyed swapping watch faces (maybe 89 styles is overkill, but it’s kind of fun, right?).
The interval tracking holds up pretty well. It counts steps and keeps an eye on heart rate during work and rest, so I can see exactly how hard I’m pushing. Sure, I wish the GPS was built-in, but connecting it to my phone gets the job done if I want to map my run.
Health-wise, it’s got a bunch of features—some more useful than others. Step and sleep tracking are accurate for daily wear, but I wouldn’t trust the blood pressure readings for anything serious.
If you care about notifications, this watch buzzes for calls and messages, so you’ll never miss a text from your running buddy (or those “run faster!” reminders). For the price, the FITVII FINO 2 gets most things right, but not everything.
Imzuc Interval Buddy
If you want a tracker for interval running that won’t break the bank or your patience, this one checks a lot of boxes.
Pros
- Monitors heart rate and sleep so we can pretend we’re fitness experts
- Battery lasts longer than our motivation on Mondays
- Waterproof enough to survive our sweaty sprints (or accidental showers)
Cons
- No built-in GPS—our phone still has to come for a run
- Touchscreen sometimes acts like it’s also getting a workout
- Can’t answer calls, in case we need to phone a friend during intervals
Setting this up made me feel weirdly tech-savvy, and it only took a minute. The Imzuc tracker keeps a surprisingly close eye on heart rate, which is great for those sprint-rest-sprint sessions.
I like how the sleep tracking gives me an excuse for another nap—hey, it’s “for the data,” right? When it comes to sweaty runs or spontaneous swims, it handles water just fine.
We do have to keep our phones nearby if we want real-time workout routes, but at least now I can blame my slow pace on “phone GPS issues.” The vibrating alarm clock is more polite than a regular alarm, gently nudging me out of bed or reminding me to move before I become part of the couch.
I didn’t expect interval features on par with expensive models, but for tracking intervals, steps, and calories, this watch fits right in. If your main goal is to keep tabs on your runs without making your wallet cry, the Imzuc tracker is a handy sidekick—just don’t ask it to reply to texts or find your missing socks.
Garmin Forerunner 165
If you want to crush interval runs (and maybe look cool doing it), give this running smartwatch a real shot.
Pros
- Training plans adapt to our real runs—no guilt when we skip leg day
- Colorful AMOLED screen that makes our stats pop, even when we’re sweating buckets
- Battery lasts longer than most of our “one more episode” nights
Cons
- Heart rate sensor sometimes seems as dramatic as we are on Monday mornings
- Menus take a minute to get used to if we’re not already Garmin fans
- No onboard music storage, so our phones still get VIP race-day status
The Forerunner 165 feels light on my wrist, which I appreciate—especially when I forget to charge it. No worries, it just keeps going.
The bright touchscreen makes it easy to see split times during intervals, so I don’t have to squint or wish for younger eyes. I love having built-in training plans that tell me exactly how hard (or not) to push.
There’s a nice “coach on the wrist” feeling, but without any actual yelling. If I skip a session, the watch quietly adapts the plan instead of judging me like my group chat.
Notifications come straight to the watch, so I can ignore work emails just as skillfully while running as I do at my desk. A few quirks—like the heart rate monitor occasionally thinking I ran a marathon while walking the dog—don’t really get in the way.
This one covers interval training needs better than most coaches (and doesn’t eat my snacks).
Amazfit Band 7
If you like interval running and hate running out of battery (or patience), this fitness band might just be your new best friend.
Pros
- Battery life lasts longer than that container of mystery leftovers in our fridge.
- Tracks a staggering number of sports—seriously, we didn’t even know there were 120 sports.
- Vibrant, oversized screen makes stats easy to read, even when we’re out of breath.
Cons
- No built-in GPS—it borrows from our phone, just like our kids borrow our charger.
- Band can feel a bit narrow for bigger wrists, especially during sprints.
- Touchscreen might lag if we have sweaty fingers mid-run.
Right out of the box, the Amazfit Band 7 impresses with an easy setup and a comfy fit. The big, clear screen makes it easy to check heart rate and lap splits without squinting or stopping mid-stride.
When I’m deep in an interval workout, the vibrations are strong enough to jolt me out of any second-guessing about whether it’s time to rest…or sprint again. The long battery life is a huge plus—it covers a week of daily runs, with juice to spare for sleep tracking (because, let’s be honest, we actually need sleep after those intervals).
The band tracks runs, swims, and a ton of other activities. If I ever get bored of interval running, there are over a hundred alternatives. Plus, Alexa is right there to tell me the weather or remind me when it’s snack time.
It’s not perfect, though. It relies on my phone’s GPS, so leaving the phone behind isn’t an option if I want accurate distance. The band is pretty slim—great for smaller wrists, but a bit snug for those of us who grew up on bread and pushups.
Touchscreens and sweat don’t mix, so I’ve missed a swipe or two mid-workout. The Amazfit Band 7 is a smart, affordable tracker for interval runners who want plenty of features and reliable performance—just don’t plan on ditching your phone anytime soon.
Wontrum Health Smart Watch
If you want a fitness tracker that handles interval running and makes you feel way cooler than your old step counter ever did, this is a solid buy.
Pros
- Crystal clear screen that’s actually nice to look at
- Tracks enough workout modes to make us consider taking up interpretive dance
- Battery lasts longer than our willpower on leg day
Cons
- No built-in GPS, so we’ve got to drag our phones along
- Syncing the app can be a little slow on busy days
- Touch screen is a fingerprint magnet
With the Wontrum Health Smart Watch on my wrist, staying on top of intervals feels less like a chore and more like a high-tech treat. The touch display is bright and colorful, so I’m not squinting mid-sprint just to check my heart rate.
Switching between running intervals is quick, and seeing all my stats pop up in real time gives me that extra push to finish strong (or at least convince myself I’m trying). I appreciate the extras packed into this watch.
From blood oxygen to sleep tracking, it covers way more than just running. I even get health reminders to drink water—because honestly, I tend to “forget” until it’s too late.
The battery keeps chugging along for days, so that’s one less thing to worry about charging besides my tired legs. I do wish it had built-in GPS, since carrying a phone for accurate route tracking isn’t ideal, especially on those blazing hot track days.
Still, for the price, it handles intervals and daily activity impressively well. If style matters, the customizable watch faces help me coordinate with every gym outfit—even if nobody in spin class notices.
Buying Guide
Picking a fitness tracker for interval running feels a bit like choosing which veggie to eat—there are just too many options, and most of them beep at us.
So how do we make a smart choice without losing our minds?
Key Features We Should Look For:
- Accurate Heart Rate Tracking: If the tracker tells us our resting heart rate is 200, it’s basically just making things up.
- Interval Timer: Nobody wants to juggle a stopwatch while dripping sweat.
- Water Resistance: Sweat happens. Rain does too.
Some of us want extra features, honestly, because why not?
| Feature | Why It Matters |
|---|---|
| GPS | It tracks our actual route, not just steps in place. |
| Battery Life | We hate when the tracker dies halfway through a run. |
| Comfort/Fit | If it’s itchy, we’re just not wearing it. |
We need screens that we can actually read. Sun glare shouldn’t turn our tracker into a guessing game.
Let’s not forget about app support. We want a tracker that works well with our phones and actually makes sense of our workouts—not one that sends weird notifications at 2 a.m.
And price matters. We shouldn’t have to sell our bikes just to afford a decent tracker for interval running.
From a young age, I have always had a big interest in technology, and this blog is an extension of that interest. Through this blog, I hope to provide others with all of the information they need regarding tech options to consider, and things such as compatibility. Some of the different items I will be discussing include headphones, smartwatches, and how to fix common issues.
Related Posts:
