Samsung Galaxy Watch vs Apple Watch for Running: Which Smartwatch Actually Tracks?

So you’re already in the smartwatch ecosystem and you want to know which one handles running better. If you’re also considering a Samsung against a dedicated Garmin, our Samsung Galaxy Watch Ultra vs Garmin Forerunner 265 comparison covers that matchup in detail. Maybe you’re choosing between the Samsung Galaxy Watch Ultra and the Apple Watch Ultra 2. Or maybe you’re looking at the standard Galaxy Watch 7 vs Apple Watch Series 11. Either way, you want a watch that does smartwatch things well and also tracks your runs properly.

I’ve spent time with both platforms for running, and the honest answer is: neither is a dedicated running watch. But one of them is noticeably better than the other for this specific use case. Let me break down exactly where each wins and where both fall short compared to Garmin and COROS.

Quick Comparison Table

Feature	Samsung Galaxy Watch Ultra	Apple Watch Ultra 2
Price	$649	$799
Display	1.5” AMOLED, 480 x 480	1.93” OLED, 410 x 502
Weight	60.5g	61.4g
Battery (smartwatch)	~2 days	~2.5 days
Battery (GPS tracking)	~12 hours	~12 hours
GPS Type	Dual-frequency (L1+L5)	Dual-frequency (L1+L5)
Heart Rate	BioActive Sensor (optical)	Optical + electrical
Operating System	Wear OS 5 (One UI Watch)	watchOS 11
Storage	32GB	64GB
Cellular	Yes (optional)	Yes (standard on Ultra)
Water Resistance	IP68 + 10 ATM	WR100 + EN 13319
Offline Maps	Via Google Maps	Via Apple Maps
Music Storage	Yes (Spotify, YouTube Music)	Yes (Apple Music, Spotify)
Running Power	No native	Yes (wrist-based)
Running Dynamics	Limited	Cadence, stride, ground contact
Third-party Apps	Google Play Store	App Store
Phone Compatibility	Android only	iPhone only

GPS Accuracy: Both Good, Neither Great

Both watches use dual-frequency GPS (L1+L5 bands), which was a premium feature on dedicated running watches just two years ago. In practice, this means both handle urban environments and tree cover reasonably well.

The Apple Watch Ultra 2 locks on slightly faster in my experience, usually within 5 to 10 seconds. The Samsung Galaxy Watch Ultra sometimes takes 15 to 20 seconds to get a solid fix, especially in areas with partial sky view.

During runs, both track within about 1 to 2% accuracy on distance compared to a dedicated Garmin or COROS watch. That sounds close, but over a 10-mile run, 2% means your watch might say 9.8 or 10.2 miles. For casual running, this doesn’t matter. For interval training where you’re relying on instant pace feedback, it’s noticeably less reliable than a Garmin Forerunner.

The instant pace problem: Both the Apple and Samsung watches show pace data that’s jumpier than dedicated running watches. You’ll see pace swing from 7:30 to 8:15 over a few seconds when you’re running steady. This is a known limitation of how smartwatches process GPS data compared to dedicated running chips.

Verdict on GPS: The Apple Watch Ultra 2 is marginally better at GPS lock and consistency, but neither matches a $300 Garmin Forerunner.

Running Features: Apple Pulls Ahead

This is where the gap becomes meaningful. Apple has invested significantly in running features over the last few watchOS versions, while Samsung’s running capabilities remain more basic.

What Apple Watch Offers Runners

Running power from the wrist. Since watchOS 9, the Apple Watch estimates running power without any external sensor. It tracks vertical oscillation, ground contact time, and stride length. This data shows up in the Workout app and syncs to Apple Health.

Custom workouts and intervals. You can build structured interval workouts directly in the Workout app. Set work/rest intervals, pace targets, heart rate zones, and the watch will guide you through them with haptic alerts.

Race route and breadcrumb navigation. You can load GPX routes and follow them on the watch. It’s not full-color maps like a Garmin 965, but it works for following a pre-planned route.

Heart rate zones with auto-detection. The Apple Watch automatically calculates your heart rate zones and alerts you when you cross zone thresholds during runs.

Running form metrics. watchOS tracks vertical oscillation, ground contact time, and stride length. These metrics help you understand your running economy.

What Samsung Galaxy Watch Offers Runners

Basic workout tracking. Samsung Health tracks distance, pace, heart rate, and calories. The data is functional but less detailed than Apple’s offering.

Guided workouts. Samsung Health has some guided running programs, but they’re less customizable than Apple’s interval builder.

Heart rate zones. You get zone-based training, but the zone calculations are less sophisticated than Apple’s auto-detection.

No running power. Samsung doesn’t offer native running power estimation. You’d need a third-party app and possibly an external sensor.

No running dynamics. No ground contact time, vertical oscillation, or stride length tracking.

The gap: Apple has clearly prioritized running features more than Samsung. If running data matters to you, the Apple Watch is the better choice between these two.

Heart Rate Accuracy: Close Race

Both watches use optical heart rate sensors on the wrist. For steady-state running (Zone 2, easy pace), both are accurate to within 1 to 3 BPM compared to a chest strap. This is good enough for most runners.

Where both struggle:

Interval training. During rapid heart rate changes (sprinting, then recovering), optical sensors lag by 5 to 10 seconds. If you’re doing 400m repeats and checking your heart rate during recovery, the watch will still show an elevated reading when your heart has already started recovering.

Cold weather. Optical sensors rely on blood flow at the wrist. In cold weather, vasoconstriction reduces blood flow and accuracy drops. Wearing the watch over a sleeve helps, but it’s a known limitation.

Tight vs loose fit. Both watches need a snug (not tight) fit for accurate HR readings. If the watch slides around on your wrist during runs, the data will be unreliable.

Verdict on HR: Both are adequate for easy runs and steady-state training. Neither replaces a chest strap for serious interval work or heart rate zone training.

Battery Life: The Dealbreaker for Many Runners

This is where both watches lose to every dedicated running watch on the market.

Samsung Galaxy Ultra: About 2 days of smartwatch use, 12 hours of GPS tracking. If you run for an hour daily and use the watch normally, you’re charging every night or every other night.

Apple Watch Ultra 2: About 2.5 days of smartwatch use, 12 hours of GPS tracking. Slightly better than Samsung, but still requires charging every 2 to 3 days with regular running.

For comparison, a Garmin Forerunner 265 lasts 13 days in smartwatch mode and 20 hours in GPS mode. A COROS Pace 4 lasts even longer. If you hate charging your watch, neither Apple nor Samsung will make you happy. Our COROS vs Garmin 2026 comparison shows exactly how much battery life you gain by going with a dedicated running watch.

The charging problem for runners: If you run in the morning, you need to plan charging around your schedule. Morning run with GPS tracking? That’s 10 to 15% of your battery gone. Do that for 3 days in a row and you’re scrambling for a charger before your next run.

Verdict on battery: The Apple Watch Ultra 2 is marginally better, but both require significantly more charging than any dedicated running watch.

Smartwatch Features: Where Both Shine

Let’s be fair. If you’re comparing these watches, you probably care about more than just running. Here’s where both outperform Garmin and COROS:

App ecosystems. Both have extensive app stores. Google Maps, Spotify, messaging apps, payment apps, weather apps. Garmin’s Connect IQ store has apps, but the selection is much smaller.

Notifications and communication. Both handle phone notifications, calls, and messages well. Samsung has better Android integration, Apple has better iPhone integration. This is the main reason people choose a smartwatch over a dedicated running watch.

Health monitoring beyond running. Both track sleep, stress, blood oxygen, and general activity. Samsung adds body composition analysis (BIA) which estimates muscle mass, body fat, and water percentage. Apple focuses more on heart health with ECG and irregular rhythm notifications. The Garmin Venu 4 vs Apple Watch Series 11 comparison covers how a Garmin smartwatch stacks up on health features.

Cellular connectivity. Both offer LTE models so you can leave your phone at home and still get calls, messages, and stream music. For runners who want to stay connected without carrying a phone, this is a significant advantage over most Garmin and COROS watches.

Which Should You Buy for Running?

Buy the Apple Watch Ultra 2 if:

You’re in the Apple ecosystem. iPhone, AirPods, Mac. The integration is seamless and the experience is polished.
Running features matter to you. Apple offers running power, custom workouts, and running dynamics that Samsung doesn’t match.
You want the best app ecosystem. The App Store has more running-specific apps than Google Play.
You’re willing to pay the premium. At $799, it’s $150 more than the Samsung, but the running features justify the difference.

Buy the Samsung Galaxy Watch Ultra if:

You’re in the Android ecosystem. Samsung’s integration with Android phones is excellent, and Wear OS has matured significantly.
You want body composition tracking. Samsung’s BIA sensor is unique and useful for runners tracking body composition changes during training.
Budget matters. At $649, it’s cheaper than the Apple Watch Ultra while offering similar smartwatch features.
You prefer the design. The Samsung has a more traditional watch look that some runners prefer.

Consider a dedicated running watch instead:

If running is your primary sport and you don’t need LTE, messaging, or app store access during runs, a Garmin Forerunner 265 ($450) or COROS Pace 4 ($349) will give you better running features, longer battery life, and more accurate GPS for less money. The trade-off is a less capable smartwatch experience. Our best GPS running watches 2026 roundup has more options at every price point.

For more on dedicated running watches, see our Garmin vs COROS vs Apple Watch comparison and our best GPS running watches 2026 roundup.

FAQ

Can I use the Samsung Galaxy Watch or Apple Watch for marathon training?

You can, but it’s not ideal. Both watches can track long runs, but the battery life means you’ll need to charge before and after every long run. For a 3 to 4 hour marathon training run, both watches will use 25 to 35% of their battery. The GPS accuracy is adequate but less reliable than a dedicated running watch for pacing during the actual marathon.

Which has better GPS accuracy for running, Samsung or Apple?

The Apple Watch Ultra 2 is slightly more consistent in my experience. Both use dual-frequency GPS and deliver similar accuracy on open roads. In urban environments with tall buildings, the Apple Watch tends to track slightly better. The difference is small enough that both are adequate for recreational running.

Do I need a chest strap with a Samsung or Apple Watch?

For easy runs and steady-state training, both watches’ optical heart rate sensors are accurate enough. For interval training, heart rate zone training, or if you want the most accurate data possible, a chest strap (like the Polar H10) will give you better results. The Apple Watch can connect to Bluetooth heart rate monitors; the Samsung Galaxy Watch can as well.

Can I leave my phone at home and run with just the watch?

Yes, if you have the LTE model of either watch. Both support cellular connectivity, so you can receive calls, send messages, stream music, and use maps without your phone. The Apple Watch Ultra 2 and Samsung Galaxy Watch Ultra both come with LTE as standard. Just make sure your carrier supports the watch’s cellular plan.

Which watch is better for trail running?

Neither is ideal for trail running compared to a Garmin or COROS with full offline maps. The Apple Watch Ultra 2 has breadcrumb navigation and can load GPX routes, which is useful for following a marked trail. The Samsung Galaxy Watch Ultra has Google Maps integration but the trail running experience is less polished. If trail running is your primary activity, a Garmin Forerunner 965 or Fenix 8 with full-color topographic maps is a much better choice. See our Garmin Fenix 8 review for a deep dive on trail-capable watches.