Enduro 4 keeps Enduro 3’s battery life in every mode: 36 days as a smartwatch, or 90 days with solar, and 120 hours of GPS, or 320 hours with solar. The changes include Garmin Epic for multi-day efforts, grade-adjusted pace-based workouts, rolling pace, rucking workouts, and perspective view maps. Storage doubles to 64GB and the band changes to a ComfortFit fabric strap. Enduro 4 costs £799.99 / $899.99, and Garmin’s UK store now sells Enduro 3 for £699.99.
Every quoted figure comes from the official specs and is expanded on the Enduro 4 specifications and Enduro 3 specifications pages.
Enduro 4 vs Enduro 3 at a glance
| Selected Features / Specs | Enduro 4 | Enduro 3 |
|---|---|---|
| Garmin Epic | Yes | Not listed |
| Grade-adjusted pace-based workouts | Yes | Not listed |
| Rolling pace | Yes | Not listed |
| Rucking | Rucking workouts, pack weight adjustable during the activity | Rucking activity with pack weight |
| Lactate threshold | Yes | With a compatible accessory |
| Perspective view maps | Yes | Not listed |
| Indoor rowing VO2 Max, FTP and power curve | Yes | Not listed |
| Course Planner, ClimbPro, NextFork, Up Ahead | Yes | Yes |
| ECG app, Training Readiness, Endurance Score | Yes | Yes |
| Smartwatch battery (with solar) | 36 days (90 days) | 36 days (90 days) |
| GPS battery (with solar) | 120 hours (320 hours) | 120 hours (320 hours) |
| Storage | 64GB | 32GB |
| Weight | 66g | 63g |
| Band | ComfortFit fabric, 145-220mm wrists | UltraFit nylon, 127-225mm wrists |
| Security updates until | 6 October 2028 | 27 August 2026 |
| Price | £799.99 / $899.99 | £769 / $899 at launch; £699.99 at Garmin UK now |
New features on Enduro 4
Garmin Epic
Garmin Epic records health and performance data from a multi-day activity and shows it in one view, which you can then review and share. A stage race, a multi-day hike or a long ultra with sleep stops is the kind of effort it is built for, and it is the most relevant addition for the athletes who buy an Enduro.
Grade-adjusted pace-based workouts and rolling pace
Enduro 3 shows grade-adjusted pace as a data field. Enduro 4 can also run a structured workout against it, so the pace target changes with the gradient and a hilly route no longer breaks the session. Garmin lists rolling pace alongside it as a second tool for judging effort on hills.
Stamina, lactate threshold and rucking
Garmin describes enhanced stamina metrics that show how endurance changes with fitness and training history, in addition to the Real-Time Stamina that both watches have. Lactate threshold is listed for Enduro 4 without the compatible accessory that Garmin requires on Enduro 3. Rucking moves from an activity with a pack weight entry to full rucking workouts, with pack weight that can be changed during the activity. This site’s rucking update explainer covers the detail.
Maps
Perspective view tilts the map to show the terrain ahead at zoomed-in levels. Garmin also describes the TopoActive maps on Enduro 4 as smoother and more intuitive, which is Garmin’s claim and has not been tested here. Both watches include Course Planner, ClimbPro, NextFork, Up Ahead, and dynamic round-trip routing.
Other additions
- Indoor rowing VO2 Max, FTP, power curve, lactate threshold and max heart rate, with a compatible rowing machine
- Mixed session multisport
- ArcheryX, which replaces the Archery profile
- Gaming Activity and GameOn app compatibility
Battery life is unchanged
Garmin publishes the same figure for both watches in every mode. The only difference on the sheets is a solar figure of 25 hours for activity with music on Enduro 4, where the Enduro 3 gives 22 hours and no solar figure. Garmin renamed the modes between the two watches, and the table uses the Enduro 4 names.
| Mode | Both watches | With solar |
|---|---|---|
| Smartwatch | Up to 36 days | Up to 90 days |
| Low Power Watch Mode | Up to 92 days | Unlimited |
| Activity Mode (Normal) | Up to 80 hours | Up to 144 hours |
| Activity Mode (Extended Battery) | Up to 120 hours | Up to 320 hours |
| Activity Mode (Max Accuracy) | Up to 60 hours | Up to 90 hours |
| Activity Mode (Max Battery) | Up to 210 hours | Unlimited |
| Expedition Mode | Up to 77 days | Unlimited |
The site’s sports watch battery life guide explains what the solar assumptions mean in practice.
Hardware changes
- Storage is 64GB, up from 32GB, which leaves more room for maps and music.
- The band is a ComfortFit fabric strap for wrists of 145-220mm. The UltraFit nylon band on the Enduro 3 fits wrists from 127mm, so smaller wrists are better served by the older band.
- It weighs 66g with the band, 3g more than the Enduro 3. The case alone is unchanged at 57g.
- The case, titanium bezel, Power Sapphire lens, 1.4-inch 280 x 280 MIP display, dimensions, sensors, multi-band GPS and connectivity are the same on both sheets.
Listed for Enduro 3 and absent from the Enduro 4 page
Garmin’s Enduro 3 page lists six items that do not appear on the Enduro 4 page at launch. Garmin has not said any of them were removed, and launch pages are sometimes incomplete.
- Hands-free voice control
- Quick workout
- Varia Vision compatibility
- YouTube Music
- WhatsApp through the Connect IQ app
- XC ski power
Will Enduro 3 get the new features?
Garmin has confirmed that Epic, Stamina Zones and the rucking and rowing updates will pass to the Fenix 8 series and other existing watches. Enduro 3 launched alongside Fenix 8 in August 2024, which makes it a likely recipient, but those features are on Garmin’s Enduro 4 page today and are not on its Enduro 3 page. Garmin’s guaranteed security updates for Enduro 3 also ended on 27 August 2026, and Enduro 4 is covered until 6 October 2028.
Which to buy
Enduro 3 owners gain nothing in battery, display, or sensors from Enduro 4, and some new features may reach their watch via an update. The case for replacing a two-year-old Enduro 3 rests on 64GB of storage and having Garmin Epic and the new workout types now.
For a new buyer, Enduro 4 costs £100 more than Enduro 3 at Garmin’s current UK prices. That buys the new features from day one, double the storage and two more years of guaranteed security updates. Enduro 3 has the same battery, the same maps and Course Planner, and the same Training Readiness and ECG app for less money. The wider Garmin range has no other watch that matches either of them for battery life, and the closest alternative is covered in Enduro 4 vs Fenix 9 Pro Solar.
Garmin Enduro 4
Course Planner, TopoActive maps and Garmin Epic, with up to 320 hours of solar GPS, 64GB storage and a 66g case.
Details/buy: Garmin Enduro 3
Quick answers
What is new on Garmin Enduro 4 compared with Enduro 3?
Enduro 4 adds Garmin Epic for multi-day activities, grade-adjusted pace-based workouts, rolling pace, rucking workouts, perspective view maps and indoor rowing metrics. Storage rises from 32GB to 64GB and the band changes to a ComfortFit fabric strap. The full lists are on the Enduro 4 specifications page.
Is Enduro 4 battery life better than Enduro 3?
No. Garmin publishes the same battery life for both watches in every mode: up to 36 days as a smartwatch, or 90 days with solar, and up to 120 hours of GPS, or 320 hours with solar. The figures are on Garmin’s product pages for each watch.
Will Enduro 3 get Enduro 4 features in an update?
Garmin has confirmed that Epic, Stamina Zones, and the rucking and rowing updates will roll out to the Fenix 8 series and other existing watches. Enduro 3 launched alongside the Fenix 8, but Garmin’s Enduro 3 page doesn’t list those features yet. The feature rollout post has the details.
Is Enduro 4 heavier than Enduro 3?
Yes, by 3g. Enduro 4 weighs 66g with its ComfortFit band, and Enduro 3 weighs 63g with its UltraFit band. The case alone weighs 57g on both, according to Garmin’s spec sheets.
How much does Enduro 4 cost compared with Enduro 3?
Enduro 4 launched at £799.99 / $899.99. Enduro 3 launched at £769 / $899 in August 2024, and Garmin’s UK store listed it at £699.99 in October 2026.
Last Updated on 6 October 2026 by tfk the5krunner
Small things I always use
- Garmin 90-degree charging adapter: Charges your Garmin from any USB-C cable. Essential when travelling. I use one.
- Body Glide: The blue anti-chafe stick swimmers and runners carry. I use it.
- Speedo earplugs: Fewer ear infections and no cold-water dizziness. I use them.
- Dryrobe Advance: My winter changing robe for open-water swims. I use one. A cheaper option is the AONYIYI changing robe.
- Maurten: Race fuel that stays easy on the stomach. I use them.
- Garmin charging puck: The quickest way to top up before a session. I use one.
- Injinji: Toe socks that stop rubbing, so you run more. I use them.
- Ultimate toe protectors: Stop black toenails on long runs. They work. I use them.
- Compressport R2 v2 calf sleeves: My calf sleeves of choice. I use them.
- Cellucor C4: My pre-workout before hard sessions.
- TPU tubes: Schwalbe Aerothan, Tubolito and Pirelli SmarTube. Light, tiny spares. I use all three.
- G8 insoles: Adjustable insoles that are good. I use them.
- Cycplus Cube: A 97g electric pump that gets a road tyre rideable in two minutes. I carry one. 5% off with code THE5KRUNNER.
Watches and sensors
- Polar H10: My daily driver for waking HRV.
- Polar Verity Sense: My backup arm-worn HR sensor.
- Nomad bedside charger: Charges my iPhone and Apple Watch overnight. I use it, and many of their bands.
- Train.Red: The best muscle oxygen sensor I’ve used.
- Tymewear: Accurate heart rate and reliable ventilatory zones. I use it to pace endurance rides over an hour.
- Garmin Forerunner 970: A pro-grade triathlon watch. I use this.
- Apple Watch Ultra 4: My daily smartwatch. No phone needed on rides.
- Garmin Fenix 9 Pro: I’ve just bought one.
On the bike
- Continental GP5000 for everyday riding, and Aero 111 on the front for special occasions.
- Helmets: Specialized S-Works Evade 3 for road riding, and Rudy Project Wing for TT-style races. I use both.
- Ravemen FR300: A front light that mounts under your Garmin or Wahoo. I use one.
- Wahoo TRACKR Radar: I use it on one bike and Varia on the other. They perform the same.
- Garmin Varia RTL515: Radar that warns you of cars from behind. I use this model.
- Wahoo ELEMNT Roam 3: The bike computer that’s easy to use. I use mine on most rides.
- Favero Assioma Pro RS2: Accurate power pedals that swap easily between bikes. I use this model.
Home and indoor training
- NPE Runn: Makes my basic treadmill smart, sending more accurate speed and distance to my watch and Zwift. I use it.
- Google Wifi: Keeps Zwift connected in my pain cave. I use it.
- Apple TV 4K: Zwift on the big screen. I use two.
- Google Nest Doorbell (wired, 2nd gen): My video doorbell, running in both Google Home and Apple Home. I use it.
Health, recovery and sleep
- FreeStyle Libre 3 Plus: Shows how my blood sugar responds to diet.
- hDrop: Measures my sweat loss in summer and indoors.
- Fourth Frontier Zone: Checks my heart under load in hard sessions.
- Oura Ring 5: My partner’s recovery tracker of choice.
- Kineon MOVE+: Red light therapy for niggles. It works.
- Eight Sleep: A cooling mattress cover my partner and I use nightly.
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tfk is the founder and author of the5krunner, an independent endurance sports technology publication. With 20 years of hands-on testing of GPS watches and wearables, and competing in triathlons at an international age-group level, tfk provides in-depth expert analysis of fitness technology for serious athletes and endurance sport competitors. ID
Pointless. 2 years and nothing new. I dont know what Garmin is doing.
yes it seems very odd.
could this have been 3 pro instead? should it have included an inreach option?