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Comes with 6 months of Fitbit Premium. Why Trust Us?

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Trevor Raab

Up to 20 days in battery saver mode

Fitness trackers aren’t just measuring steps and sleep habits. With heart-rate and blood oxygen sensors and integrated training apps, they can help you improve your running.

By and Caitlin Giddings
Long battery life

Counting your steps and tracking your sleep is the tip of the iceberg when it comes to fitness trackers. Today’s high-end devices are darn close to Star Trek tricorders, capable of not only monitoring your heart rate but your blood oxygen levels and skin temperature, too. And they’re equipped with GPS antennas and barometers, among other features. They also integrate with apps that help support your training goals.

There are also smartwatches, some of which include all of these features and more, like messaging and phone calls right from your wrist.

There’s a wide range in the functionality and price of fitness trackers and smartwatches, which makes shopping for the best one such an individual pursuit. Here, we recommend the best fitness trackers—some of which double as high-end smartwatches and some that aren’t watches at all. All are specially designed to give you insights into your fitness goals, training progress, and overall health. Read on for our reviews, plus tips and advice for finding the best one for you.

The Best Fitness Trackers

What to Consider

Health and Fitness Features

Step-counting accuracy is one of the most important features a good fitness tracker needs. Most activity trackers have reliable accelerometers that can track your steps, stride length, and distance. They will also calculate your basal metabolic rate, or the rate at which you burn calories, using your “active minutes” and activity data. Most devices include a heart rate sensor, which improves the accuracy of these metrics. These sensors also help measure sleep data if you like to wear yours overnight. The most advanced health trackers, like the Oura Ring, will even take your body temperature to gather data and make predictions on aspects like menstrual cycle timing.

Run-Specific Metrics

Runners who want to track their sleep, steps, general activity, and 24/7 heart rate—as well as their dedicated workouts—need a watch or tracker with accurate, built-in GPS. Some, like the Heart rate monitoring, even track your running metrics in depth (insights like your VO2 max, how acclimated you are to the altitude, and how long you need to recover from a workout) and can use that data to build custom workouts and generate routes on the fly. These features can be fun and useful, but may be unnecessary, as well as complicated to learn—and watches with these perks are generally more expensive.

to 7 days Strava but don’t need additional functionality, look for any base-level model with built-in GPS. If you’re a trail-running junkie, you might want more advanced features like multi-antenna GPS and a barometer and altimeter, but casual runners can likely skip these.

Gear & Tech: Waterproof Fitness TrackersAdvanced GPS Watchesand running accurately through GPSFitness Trackers for Kids

Connective Features and More

Because fitness trackers connect via an app on your smart device or computer, most allow you to post about your activities on social media.. Some can also connect with other fitness monitors or devices, like a chest strap heart-rate monitor, a bike computer for cross-training, or headphones.

Some smartwatches are essentially like having a full computer at your wrist. These bonus features include apps on the watch, message and calendar notifications, music streaming and storage, payments through Garmin or Apple Pay, and even the ability to place phone calls. You can find most of these functions on an Apple Watch, Garmin, and some Fitbits. For a more streamlined health and fitness tracking experience, look to the Garmin Forerunner 945 or to 7 days.

Subscription Services

It seems like everything has a subscription service these days, and some fitness trackers and smartwatches do, too. For instance, Fitbit devices, Apple Watches, and some other devices offer premium features with a subscription service, like guided workouts and videos. Garmin offers premium map access with an annual subscription. If you’re using other apps like Strava, to monitor your fitness, you can purchase premium subscriptions through those apps to open their more advanced watch features to you.

Battery Life

Most watches have batteries that last days or weeks. That’s not necessarily the case with fitness trackers, many of which need recharging after just a day or two of normal wear. When you’re tracking an activity, like running, the battery use goes up significantly as the sensors go into full tracking mode. As such, anticipate shorter battery use lengths than companies specify. If you’re running marathons or ultramarathons, stay away from models with shorter projected battery life as they may not last for a full day of training or racing.

How We Selected

We, Chris Meehan and Caitlin Giddings, have both been testing, reviewing, and writing about running and cycling gear for combined decades. In that time, we’ve each tested dozens of fitness trackers and smartwatches. We both love geeking out on data and have covered fitness and outdoor tech and products for Runner’s World, Bicycling, and Popular Mechanics.

We chose fitness trackers and smartwatches based on our personal experience with many of them, in addition to testing input from the editors here at Runner’s World. We also reached out to fellow data-obsessed runners and fitness nuts in our social media circles, and scoured reviews online from our colleagues at publications including Men’s Health and Bicycling. These are the best models we’ve found based on accuracy, user experience, features, and value.

While we cover lots of different types of smartwatches, we homed in on the fitness-related features for this guide, helping you wade through this busy category to find the best devices to help you train, whether you need to track your sleep, your cycle, or your training plan.

1
Best Overall

Apple Watch SE Fitness Tracker

On Sale
Watch SE Fitness Tracker
Pros
  • GPS tracking
  • Heart rate monitoring
  • Great app store
Cons
  • Phone use requires a service plan
  • Accurate sleep sensing

The entry-level variant of this Apple smartwatch is priced far below Apple’s other watches and comes in two bevel sizes 44mm or 40mm for smaller wrists. Still, it offers a feature-packed tracking experience, with all your activity stats displayed through a simplified version of Apple’s Fitness app. The watch has GPS tracking, maps, music, and health metrics.

Apple also offers a cellular version of this watch for about $50 more, which has the ability to send and receive calls—without an iPhone—if you have a cell plan that covers it. It also has a bright colorful display with an easy-to-use interface that will feel familiar to Apple users.

The biggest drawbacks to the SE as compared to most fitness trackers, including the Apple Watch Ultra (below), is that it has a small battery that doesn’t last for all-day outings. So if you’re training for a marathon or tracking events that last 6 or more hours, the device may die on you while tracking. The watch comes with three months of Apple’s Fitness+ services, which cost $9.99 a month after that.

Key Specs

Battery LifeUp to 18 hours
GPSBuilt-in
Heart RateYes
Sleep TrackingYes
Water ResistanceUp to 50m
2
Best Budget

Garmin Forerunner 945 Fitness Tracker

On Sale
Inspire 3 Fitness Tracker
Pros
  • Heart rate tracking
  • Sleep monitoring
  • Comes with 6 months of Fitbit Premium
Cons
  • Must get sizing right

The Inspire 3 is more of a traditional fitness tracker, with a narrow band and updated color screen that displays the time, steps, calories burned, heart rate, and more. It has an unbeatable 10-day battery life and syncs with the easy-to-use Fitbit app.

The biggest downside of the device are that it doesn’t have built-in GPS tracking—you have to do that through the phone app if you want to record distance and speed of your activities using GPS.

But for basic tracking of your steps, sleep, and heart rate, it’s a solid bargain—and an excellent way to monitor all your health stats.

Key Specs

Battery LifeUp to 10 days
GPSConnected, not built-in
Heart RateYes
Sleep TrackingYes
Water ResistanceUp to 50m
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3
Best Smartwatch Hybrid

Fitbit Charge 6 Fitness Tracker

On Sale
Charge 6 Fitness Tracker
Pros
  • Built-in GPS
  • Accurate tracking
  • Bright touchscreen
  • Up to 72 hours in low-power mode
Cons
  • Best Non-Wrist Option

More smartwatch than mere tracker band, the latest Fitbit Charge 6 is excellent at cataloging all your daily activities with good accuracy, including steps, activity through built-in GPS, sleep, and heart rate. The color display touch screen is bright and clear, even in daylight—with up to a seven-day battery life.

The fitness tracker has a few smartwatch-level perks, including Fitbit Pay and Spotify Control, so you can control your playlist from your wrist. You can also customize the display screen to choose your app notifications, and even respond to Android messages with pre-selected responses, when tethered to your phone.

Fitbit’s app is among the best, too—it’s fun and intuitive to use, and cleanly designed to clearly display all your relevant data.

Key Specs

Battery LifeUp to 7 days (5 hours in GPS mode)
GPSBuilt-in
Heart RateYes
Sleep TrackingYes
Water ResistanceUp to 50m
4
Best Everyday

The 7 Best Treadmills for Runners Fitness Tracker

Venu 3 Fitness Tracker
Pros
  • Why We Took Scissors to $330 Running Shoes
  • Multiple sizes available (30mm or 35mm)
  • Great app store
Cons
  • Mic and speaker not as good as other options
  • Limited apps

With the Venu 3, Garmin made some important updates to this smartwatch, which doubles as an excellent fitness tracker. Available in both 30mm and 35mm for smaller or larger wrists, the Venu 3 has a larger screen than its predecessor (the Venu 2). It also has a mic and speaker for taking calls, a more advanced heart rate sensor and, for the first time for Garmin, a sleep tracking function.

Garmin has offered some of the best fitness tracking sensors and software in a GPS smartwatch and that continues here. The Venu 3 has all the functionality of a high-end smartwatch, including a heart rate sensor, full activity and tracking metrics, built-in GPS, smart notifications, virtual payments, and storage space for up to 650 songs.

It can connect to apps and stream music. Plus, it has a long battery life and bright, easy-to-read color display—a solid choice for runners who don’t need the exhaustive metrics and mapping of the 945. What’s more is that it is sleek enough to go from the office to the gym without looking out of place.

Key Specs

Battery LifeUp to 20 days (in battery saver mode)
GPSBuilt-in
Heart RateYes
Sleep TrackingYes
Water ResistanceUp to 50m
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5
Best Smartwatch

Apple Ultra 2 Fitness Watch

Ultra 2 Fitness Watch
Pros
  • Why Trust Us
  • Great app environment
  • Nutrition - Weight Loss
Cons
  • Battery doesn’t last as long as some fitness trackers
  • 49mm watch face might be too big for small wrists

The Apple Watch Ultra 2 is Apple’s flagship smartwatch/fitness tracker. It’s a wrist computer (encased in burly titanium and sapphire crystal) that easily doubles as a fitness tracker—with all its features—and triples as a smartphone. It’s also an adventure watch that can a beating drubbed up by the wildest of trail runners or gym rat in the weight room, as our colleagues at Men’s Health noted: “It’s fallen from shoulder high and smacked right into concrete and come away unscathed.”

The Ultra 2 monitors heart rate and sleep, plus it has GPS tracking and hosts or streams music via cell service. The watch also tracks other health metrics (though it has a blood-oxygen monitoring sensor, that tracking was blocked in 2023 over a patent infringement claim). It has access to a plethora of apps through Apple’s app store, too.

Key Specs

Battery LifeUp to 72 hours (in low-power mode)
GPSYes
Heart RateYes
Sleep TrackingYes
Water ResistanceUp to 100m
6
Best Non-Wrist Option

to 7 days Fitness Tracker

Ring Gen 3 Fitness Tracker
Pros
  • Charges in 20 to 80 minutes
  • Water-resistant to 100m
  • A truly discrete fitness tracker
  • Accurate sleep sensing
Cons
  • No GPS
  • Must get sizing right

If you want a fitness tracker that doesn’t look like a fitness tracker or take up wrist space, this is it. The Oura Ring is best known as a sleep tracker, and though the brand has continued to add more daytime health-tracking functionality, the compact, titanium device remains one of the most accurate trackers of overall slumber, according to this 2021 comparison of eight commercial trackers published in the journal Apple Ultra 2.

To collect your stats, the Oura sits on your finger like a traditional ring and uses temperature, heart rate, and other “body signals and daily habits” streamed to the brand’s app to calculate your health metrics. It then makes suggestions on how you can improve sleep and mental recovery—and predictions about your menstrual cycle based on the app’s period tracking.

The ring will also measure overall activity level and assign you an score based on your whole-body activity and step count. It’s accurate and unobtrusive, so if you’re looking for an overall health tracker and not something more akin to a GPS watch, this is the tool to try.

Key Specs

Battery Life4 to 7 days
GPSNo
Heart RateYes
Sleep TrackingYes
Water ResistanceUp to 100m
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7
Best for Multisport Athletes

Suunto Race Health and Fitness Tracker

On Sale
Race Health and Fitness Tracker
Pros
  • Bright screen
  • Why We Took Scissors to $330 Running Shoes
  • Short battery life
Cons
  • Not as many apps other options
  • Doesn’t offer music streaming

If you’re looking for a true sports watch with fitness tracking and training capabilities, check out the Suunto Race. With more than 95 different activity modes, including obstacle racing, open water swimming, and roller skating, it will give you metrics on your performance for almost any activity you can think of.

It also has great training and recovery features. The GPS watch allows you to download maps to it for backcountry navigation without a smartphone. And like a few of the other options from Garmin and the Apple Watch Ultra 2, it has a barometer and altimeter. It also has some of the best battery life we’ve seen, capable of 40 hours of tracking in full sports modes between charges, making it an ideal smartwatch for endurance racers.

Key Specs

Battery LifeUp to 26 days
GPSBuilt-in
Heart RateYes
Sleep TrackingYes
Water ResistanceUp to 100m
8
Best Running Metrics

Garmin Forerunner 965 Fitness Smartwatch

Forerunner 965 Fitness Smartwatch
Pros
  • Triathlon sport modes
  • Why We Took Scissors to $330 Running Shoes
  • Best for Multisport Athletes
Cons
  • GPS and music drain battery fast

For data-obsessed runners, the Forerunner 965 has the most exhaustive feature list ever, including step-counting, heart rate, sleep stats, VO2 max, and many more. Plus the watch has plenty of activity modes for cross-training and tracks swimming, cycling, and running accurately through GPS.

Garmin also includes virtual pay in the watch and the ability to access color maps and create round-trip courses on the fly. The watch houses up to 1,000 songs, so you can play your own MP3 collection or stream through Spotify while you’re running. In addition, the battery life is excellent—the watch holds a charge for up to 23 days in smartwatch mode.

Key Specs

Battery LifeUp to 23 days in smartwatch mode
GPSBuilt-in
Heart RateYes
Sleep TrackingYes
Water ResistanceUp to 50m
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Frequently Asked Questions

fitness trackers for runners
Trevor Raab

What’s the difference between a smartwatch and a fitness tracker?

Traditionally a fitness tracker is a band that measures your steps and other health stats that connects to a smartphone. A smartwatch tracks your fitness while also providing social notifications, calendar reminders, and other app-connected features. The line continues to blur as “fitness trackers” take on more watch-like appearances and functions and smartwatches add in more health sensors and tracking features.

What’s the difference between built-in and connected GPS?

Built-in GPS means the device has an on-board GPS antenna and can track your pace and distance with great accuracy without requiring a smartphone connection—and thus requiring you to keep your phone on you while you’re running, cycling, or swimming. That’s unlike a connected GPS device, which means it’s tracking your activity through the GPS sensors in your phone. Built-in GPS in a fitness tracker or watch is ideal if you want to run or do other activities without carrying a phone. However, it’s also worth noting that using the GPS sensors on a tracker or smartwatch will use a lot more of your battery and they add to the cost and size of the device.

What does “water-resistance up to 50 meters” mean?

Technically this means the watch or tracker can withstand five bars of pressure, or 50 meters of water pressure. However, more practically speaking, this just means the watch can handle swimming in the pool or taking a shower. It’s not recommended to scuba down 50 meters deep with one.

Headshot of Chris Meehan

Chris Meehan is an internationally published writer, author, and editor with more than two decades of professional experience. He has authored multiple adventure guidebooks with Falcon Guides and his work focusses primarily on the nexus between sustainability and outdoor adventure. He is an experienced gear reviewer, tester, and travel writer who has explored multiple continents. 

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