Every September, Apple wheels out the same promise: a thinner, smarter watch that looks almost exactly like the last one. The Series 11 sticks to the script. Sold at the same price as the Series 10, it claims 24 hours of battery life, a figure that hides a far more modest number the moment you lace up: roughly eight hours of continuous GPS, just enough to get you through a marathon.
© Apple, official photo used for editorial purposes
The Apple Watch Series 11 tracks GPS with accuracy that rivals dedicated running watches, but its battery collapses as soon as GPS tracking runs continuously. At RunMorph, the watch wins over runners who already own an iPhone and race up to the marathon, not those chasing ultra-trails. The price stays locked to the Series 10 despite a slightly bigger battery.
In September 2025, Apple unveiled three watches on the same day: the Watch SE 3, the Watch Ultra 3 and this Series 11. While Garmin, Coros and Suunto fight every year over multi-band GPS and record battery life, Apple picked a different battleground: health. The Series 11 carries over the Series 10's S10 chip unchanged, keeps the same design down to a tenth of a millimetre, and holds its price at 449 euros. The real news fits in one line: hypertension notifications and 5G connectivity, a feature that burns energy rather than saving it.
Apple's launch press release pushes a 24-hour battery life. But that figure rests on a specific protocol: 60 minutes of exercise with Bluetooth music, not 60 minutes of continuous active GPS. Not a single line of the release mentions a dedicated GPS battery figure, unlike the spec sheet of any Garmin or Coros watch. That gap in the messaging is what shapes this review.
RunMorph's advice: before buying a Series 11 for running, compare its real GPS battery life with a Garmin Forerunner 265 or a Coros Pace 3. Your choice depends on how long your runs last, not on the sticker price.
| Feature | Value |
|---|---|
| Release in France | 19 September 2025 |
| Case | 46 x 39 x 9.7 mm (also 42 x 36 x 9.7 mm) |
| Weight | 37.8 g (46 mm aluminium GPS) / 30.3 g (42 mm aluminium GPS) |
| Display | Always-on LTPO3 OLED, 416 x 496 px, 2,000 nits, 326 pixels per inch |
| GNSS | Single-frequency L1 GPS, GLONASS, Galileo, QZSS, BeiDou |
| Sensors | 3rd-generation optical heart rate sensor, ECG, blood oxygen, skin temperature, always-on barometric altimeter, compass, depth gauge down to 6 m |
| Maps | None natively in the Workout app |
| Storage | 64 GB |
| Contactless payment | Apple Pay |
| Water resistance | 50 m under ISO 22810:2010, plus IP6X dust resistance |
| Smartphone connection | iPhone 11 or later on iOS 26, Wi-Fi, Bluetooth 5.3, 5G option for 120 euros |
| Price | 449 euros (42 mm aluminium GPS) to 479 euros (46 mm), 799 euros in titanium |
The gap between marketing and real-world use plays out on three lines. Apple picks its words carefully, and RunMorph checked each claim against an independent measurement.
| Data point | Apple's claim | Independently measured |
|---|---|---|
| Battery life in everyday use | Up to 24 hours | About 8 hours of continuous active GPS, a figure Apple never publishes and that French testers establish themselves out on the road |
| Battery capacity (46 mm case) | Not disclosed | 365 mAh, vs 330 mAh on the Series 10, a gain of 35 mAh measured in a teardown |
| Display scratch resistance | Twice that of the Series 10 | Not verified by any standardised, published scratch protocol to date |
Under the case, the Series 11 packs the same dual-core S10 chip as the Series 10, with its four-core Neural Engine and 64 GB of storage. The real change is in the software. WatchOS 26 adds a hypertension alert that analyses blood flow over several weeks to flag chronically high blood pressure, plus a sleep score that replaces the old chart testers found hard to read. Both features need two to three months of continuous wear before they become reliable, a delay that neither Athlé Expliqué nor PhonAndroid find excessive given the accuracy praised by the cardiologists quoted in the Run, Fit & Fun review.
For running, the watch calculates cadence, stride length, ground contact time and vertical oscillation directly in the Workout app, no external sensor needed. These metrics are identical to the Series 10: no technical progress was added on this specific front in 2025.
© Apple, official photo used for editorial purposes
At 30.3 grams in 42 mm and 37.8 grams in 46 mm, the Series 11 weighs less than a Garmin Forerunner 265 (39 to 47 grams depending on size) but slightly more than a Coros Pace 3 (29 to 30 grams). Its 9.7 mm thickness, the same for both sizes, explains why Run, Fit & Fun describes it as a watch you forget you are wearing from the first week. The OLED display climbs to 2,000 nits, readable in full midday sun according to all three sources read for this review, and brightness drops to 1 nit at night so it won't wake the person sleeping next to you.
The Ion-X glass gets a ceramic coating that Apple claims is twice as scratch-resistant as the Series 10's. PhonAndroid confirms no visible damage after eight months of daily wear on an aluminium model, but none of the three sources has a controlled scratch protocol to put a number on that gain: the improvement is credible, but not independently measured.
Athlé Expliqué measured the Series 11's GPS accuracy on the Paris 20K: exactly 20.00 km, the official certified distance, a result the tester rates as better than some specialist GPS watches on that very course. In open terrain, the track matches that of a Garmin Forerunner 970 and a Fenix 8 worn at the same time, despite the lack of dual-frequency GPS, which is reserved for the Apple Watch Ultra 3. The third-generation optical heart rate sensor stays close to a reference chest strap on steady-pace runs, but drifts during sharp changes in intensity, a classic flaw of any wrist-based measurement rather than a weakness specific to this model.
The three sources agree on accuracy and disagree on how serious the battery problem is. Run, Fit & Fun, after several weeks of testing, calls it a sore point that remains unresolved, yet says the watch lasts a good day and a half in normal use. Athlé Expliqué and PhonAndroid put it more bluntly: only eight hours of continuous GPS, a figure that caps the watch at a 5 to 6 hour marathon and makes any ultra-trail impossible without recharging. At RunMorph, we put this split down to the angle each took: in daily use the battery has improved, in pure sports use it remains the weak link against dedicated GPS watches.
Easy runs and short sessions (under an hour): no problem at all, the eight-hour margin barely gets touched and GPS accuracy is more than enough for an easy run in the city or the woods.
Long run (1h30 to 2h30): still comfortable, even after a night with sleep tracking on, which eats into the charge before you head out.
Marathon pace (3 to 5 hours): the eight-hour margin starts to get tight, especially if the watch has already tracked a full night and a morning of notifications before the start gun.
Short intervals (30 to 45 minutes, VO2max or threshold): cadence, stride and ground contact time display live without issue, but single-frequency GPS can drift on the tight bends of a track surrounded by tall buildings.
Ultra-trail (8 hours and more): the watch dies before the finish. Without a power bank or a recharge along the course, no outing longer than eight hours can be tracked from start to finish.
The number that matters is not the 24 hours in the press release, but the 8 hours of continuous GPS measured by testers. In practice, a French runner preparing for the CCC or the Diagonale des Fous, both well over 10 hours, cannot count on the Series 11 to track the whole race. Even on a 6 to 7 hour trail, the margin gets too thin once the watch has already tracked a night of sleep and a few hours of notifications before the start. No fast field-charging option without external gear makes up for this ceiling, unlike dedicated GPS watches that last 40 to 120 hours in power-saving mode.
The Series 11 requires an iPhone 11 or later on iOS 26 for activation, updates and app installs. A runner who switches to an Android smartphone one day loses the use of the watch overnight, with no workaround. On the navigation side, the Workout app shows no topographic map: a trail runner who wants to follow a GPX route has to pay for a third-party app like WorkOutDoors, cited by Athlé Expliqué as the only credible option to turn the watch into a navigation tool on unfamiliar ground.
© Apple, official photo used for editorial purposes
| Criterion | Series 11 | Series 10 |
|---|---|---|
| Launch price | 449 euros | 449 euros |
| Chip | S10 | S10 |
| Measured battery (46 mm) | 365 mAh | 330 mAh |
| Display | Ceramic glass, 2x more scratch-resistant | Standard Ion-X glass |
| Connectivity | Optional 5G | Optional 4G LTE |
| New health features | Hypertension alert, sleep score | None |
Put simply: if you already own a Series 10, you mainly gain a hypertension alert and a slightly bigger battery, too thin a gap to justify the spend. If you are coming from a Series 7, 8 or 9, or new to the Apple ecosystem, you get real cumulative progress on battery life and display.
| Criterion | Apple Watch Series 11 | Garmin Forerunner 265 | Coros Pace 3 |
|---|---|---|---|
| Price | 449 to 479 euros | 349 to 399 euros | 229 to 249 euros |
| Weight | 30.3 to 37.8 g | 39 to 47 g | 29 to 30 g |
| Measured GPS battery life | 8 hours | 20 to 24 hours | 38 hours |
| GPS | Single frequency | Dual frequency | Dual frequency |
| Maps | No (third-party app required) | No | No |
| Ecosystem | iOS only | iOS and Android | iOS and Android |
The simple read: if budget comes first and your runs regularly go past 3 hours, the Forerunner 265 or the Pace 3 go the distance without recharging and cost less. If the Apple ecosystem and full health tracking matter more than raw battery life, the Series 11 still makes sense, as long as you charge it the night before every long run.
GPS accuracy measured at exactly 20.00 km on a certified 20 km course.
The most complete health tracking on the market according to the cardiologists quoted by Run, Fit & Fun.
Fast charging: 78 % in 60 minutes, a figure confirmed by PhonAndroid.
Low weight, 30.3 grams in 42 mm, which you forget on your wrist from the first week.
GPS battery life measured at just 8 hours, vs 24 hours claimed for general use.
No native maps, a paid third-party app becomes a must for navigation.
iPhone only, switching to Android makes the watch useless.
Same price as the Series 10 despite slim technical progress between the two generations.
To pile up the miles of a marathon build or lock in your long runs toward a half, pair your Series 11 with a structured training plan.
The Series 11 is first and foremost for a runner who already has an iPhone, races up to the marathon and wants one watch for training, sleep and health alerts. It is much less suited to a trail runner aiming for ultras, or to anyone who might switch smartphones one day. The 449 euro price hasn't moved since the Series 10, which makes it a logical buy if you are replacing a watch more than four years old, and a harder sell if you already own the previous generation.
The Series 11 earns 7.4/10. GPS accuracy and health tracking justify the score, backed by a measurement accurate to the kilometre on an official course and by the unanimous view of the cardiologists quoted in testing. But the 8-hour GPS battery life, never clearly stated by Apple, caps its use at marathon distance and rules out any ultra-trail without compromise. At RunMorph, the score leans toward running reliability rather than the display, even though the display is the point all three reviews read for this article agree on most.
© Apple, official photo used for editorial purposes
© Apple, official photo used for editorial purposes
Yes: its 8 hours of measured GPS battery life cover a marathon finished in 5 to 6 hours, but not an ultra-trail of 10 hours or more.
None: both watches start at 449 euros, a price frozen since 2024 despite the inflation seen on other Apple products.
Yes, an iPhone 11 or later on iOS 26: without it, activation, updates and app installs are impossible.
Not natively: you need to add a third-party app like WorkOutDoors, priced at about 9 euros, to get offline maps.
799 euros vs 449 euros for aluminium, so 350 euros more for a tougher case and sapphire glass.