Garmin Forerunner 255S

Garmin Forerunner 255S Review

Brand: Garmin
Updated: 5 days ago
4.0
Consolidated expert score
161
Review insights
48
Scored features
9
Expert reviews

Bottom Line

Choose the Garmin Forerunner 255S for a compact, long-lasting GPS training watch with strong running and multisport tools. Skip it if you want AMOLED polish, a touchscreen, or rich smartwatch apps.

Best for

Best for runners, triathletes, hikers, swimmers, and smaller-wrist users who want strong GPS accuracy, long battery life, recovery insights, and practical training depth without a bulky flagship watch.

Not for

Not for shoppers who primarily want a stylish smartwatch with a touchscreen, AMOLED display, broad third-party apps, voice assistant features, or the most polished payment and phone interaction experience.

Verdict

The Garmin Forerunner 255S earns its strongest praise as a compact training watch that gives smaller wrists serious Garmin depth: multiband GPS, strong battery life, broad workout tracking, useful coaching, and recovery metrics. Reviewers repeatedly found it comfortable enough for sleep and long sessions, with outdoor visibility that suits runs, hikes, rides, and swims. The tradeoff is clear: it feels more like a sport tool than a modern lifestyle smartwatch. The MIP screen helps battery and sunlight readability but lacks AMOLED color, there is no touchscreen, and Garmin’s menus can be dense for newcomers. Music, payments, notifications, and apps are useful extras, not the main reason to buy it.

Reviewer Consensus

Strong agreement: Reviewers most consistently agree that the 255S is comfortable, battery-efficient, outdoor-readable, and unusually capable for serious run and multisport training.

Mixed opinions: Opinions are more context-dependent on the button-only interface, music setup, and whether the MIP display is a benefit or a downgrade from AMOLED.

Common concern: The most repeated concern is Garmin’s learning curve, especially menu navigation and setup complexity for newcomers.

Evidence coverage
  • 9 expert reviews
  • 37 of 48 scored features show reviewer agreement
  • 10 scored features have limited or less conclusive evidence
  • 1 scored feature shows reviewer disagreement or mixed evidence
  1. Limited review data
  2. Mixed evidence
  3. Moderate consensus
  4. Strong consensus

Compared in Reviews

Products reviewers directly compared with this model, grouped into quick takeaways.

  • More expensive: AMOLED touchscreen and newer software features The review frames the 255S as a cheaper alternative to the 265 if AMOLED and newer readiness features are not priorities.
  • Compared: runner-focused tracking alternatives The Polar Pacer Pro is presented as a similarly priced alternative with many comparable tracking features for runners.

Coros Pace 2

  • Cheaper: sports tracking value The Coros Pace 2 is described as offering much of the 255S sports-tracking value for less money.

Feature Scorecards

Pros

  • 4.8
    based on 1 review
    reliability: 4.8, based on 1 review
    Reliability is supported by long-term updates and GPS stability, with Garmin’s longevity praised in follow-up use.
  • fit
    4.7
    based on 3 reviews
    fit: 4.7, based on 3 reviews
    Fit is excellent for smaller wrists, with the 41mm case repeatedly described as comfortable and well-sized.
  • 4.7
    based on 3 reviews
    size options: 4.7, based on 3 reviews
    Size options are a standout benefit because the 255S gives smaller wrists a serious multisport watch without losing core training tools.
  • 4.7
    based on 4 reviews
    outdoor visibility: 4.7, based on 4 reviews
    Outdoor visibility is excellent because the MIP display remains readable in sunlight with very little glare.
  • 4.6
    based on 5 reviews
    comfort: 4.6, based on 5 reviews
    Comfort is one of the strongest points, especially for sleep and long workouts, because the smaller case feels light and unobtrusive.
  • 4.6
    based on 6 reviews
    workout tracking variety: 4.6, based on 6 reviews
    Workout variety is extensive, spanning running, cycling, swimming, hiking, yoga, triathlon and dozens of app-manageable workout types.
  • 4.5
    based on 5 reviews
    water resistance: 4.5, based on 5 reviews
    Water resistance is strong for swimming, rain and shower use, and physical buttons are an advantage around water.
  • 4.5
    based on 2 reviews
    fitness tracking accuracy: 4.5, based on 2 reviews
    Fitness tracking is broadly accurate and analysis-rich, especially for endurance training, with some caveats around live heart-rate smoothing.
  • 4.5
    based on 1 review
    cross-platform compatibility: 4.5, based on 1 review
    The watch works across Android and iOS, with a consistent Garmin Connect experience, though Android gets better message response support.
  • 4.4
    based on 5 reviews
    value for money: 4.4, based on 5 reviews
    Value is strong for runners and multisport users, especially given multiband GPS, battery life and training depth at a midrange price.
  • 4.4
    based on 4 reviews
    band quality: 4.4, based on 4 reviews
    Reviewers consistently liked the silicone strap, calling it comfortable, adjustable, exercise-ready and tough enough for regular training use.
  • 4.4
    based on 4 reviews
    customization options: 4.4, based on 4 reviews
    Customization is strong, covering workout data screens, watch faces, colors, app settings and per-activity tracking options.
  • 4.4
    based on 5 reviews
    coaching features: 4.4, based on 5 reviews
    Coaching features are a clear strength, with Garmin Coach, suggested workouts, race tools and personal-trainer-like prompts repeatedly highlighted.
  • 4.4
    based on 2 reviews
    durability: 4.4, based on 2 reviews
    Durability looks good in longer-term use, with reviewers reporting little wear, though the bezel and glass can still be scratch concerns.
  • 4.4
    based on 8 reviews
    battery life: 4.4, based on 8 reviews
    Battery life is a major strength, commonly landing around a week or more, though music, GPS and oxygen monitoring can reduce it.
  • 4.3
    based on 4 reviews
    recovery insights: 4.3, based on 4 reviews
    Recovery insights are a strong training feature, including HRV, Body Battery, Training Load and Morning Report-style readiness context.
  • 4.3
    based on 2 reviews
    step counting accuracy: 4.3, based on 2 reviews
    Step counting appears accurate in the reviewer evidence, including a near-spot-on manual step check.
  • 4.3
    based on 6 reviews
    heart rate accuracy: 4.3, based on 6 reviews
    Heart-rate accuracy is generally strong for a wrist watch, often close to straps, but reviewers still recommend straps for the sharpest live accuracy.
  • 4.3
    based on 2 reviews
    watch face quality: 4.3, based on 2 reviews
    Watch face support is good through built-in faces and Connect IQ, with reviewers noting customization and many free options.
  • 4.2
    based on 3 reviews
    wellness insights: 4.2, based on 3 reviews
    Wellness insights such as Morning Report, Body Battery and general wellbeing metrics are useful companions to the training focus.
  • 4.2
    based on 8 reviews
    GPS accuracy: 4.2, based on 8 reviews
    GPS accuracy is a major strength thanks to multiband GNSS, though a few reviewers saw small variations or altitude inaccuracies in specific scenarios.
  • 4.2
    based on 6 reviews
    button controls: 4.2, based on 6 reviews
    The five-button layout is repeatedly praised for workouts, water use and avoiding accidental touches, even if it requires adjustment.
  • 4.1
    based on 3 reviews
    build quality: 4.1, based on 3 reviews
    Build quality is generally solid for a lightweight polymer watch, with durable long-term impressions but some concern about scratch-prone Gorilla Glass.
  • 4.1
    based on 4 reviews
    smartphone notifications: 4.1, based on 4 reviews
    Smartphone notifications work well for basic alerts and quick replies, especially on Android, but remain constrained by the small non-touch screen.
  • 4.0
    based on 4 reviews
    blood oxygen tracking: 4.0, based on 4 reviews
    Blood oxygen tracking is present for sleep or daytime monitoring, but reviews treat it as one metric among many rather than a standout feature.
  • 4.0
    based on 3 reviews
    smartwatch features: 4.0, based on 3 reviews
    Smartwatch features are useful but intentionally basic, prioritizing training over app-rich Apple, Google or Samsung-style smartwatch polish.
  • 4.0
    based on 3 reviews
    stress tracking: 4.0, based on 3 reviews
    Stress tracking is available as part of the broader health suite, with reviewers presenting it as a daily wellness metric.
  • 4.0
    based on 2 reviews
    materials quality: 4.0, based on 2 reviews
    Materials are typical Garmin Forerunner fare: lightweight polymer, Gorilla Glass and silicone, chosen more for sport practicality than luxury.
  • 4.0
    based on 2 reviews
    music controls: 4.0, based on 2 reviews
    Music controls are present for phone audio, and the watch exposes quick music controls from the button interface.
  • 4.0
    based on 1 review
    brightness: 4.0, based on 1 review
    Brightness control is handled through physical buttons and fits the watch’s practical, low-key outdoor design.
  • 3.9
    based on 4 reviews
    display quality: 3.9, based on 4 reviews
    The MIP display is practical and readable rather than flashy, with reviewers trading away AMOLED vibrancy for battery life and outdoor usability.
  • 3.9
    based on 3 reviews
    operating system experience: 3.9, based on 3 reviews
    The operating system is familiar and capable, with one reviewer praising its ease while others note Garmin’s learning curve.
  • 3.9
    based on 2 reviews
    Bluetooth connectivity: 3.9, based on 2 reviews
    Bluetooth headphone pairing is generally workable and music-friendly, though one long-term user found headphone pairing slow and frustrating.
  • 3.8
    based on 4 reviews
    sleep tracking accuracy: 3.8, based on 4 reviews
    Sleep tracking is viewed as useful and reasonably aligned with other devices, though not as deep as dedicated sleep-focused wearables.
  • 3.8
    based on 4 reviews
    pairing reliability: 3.8, based on 4 reviews
    Pairing and acquisition are mostly reliable, especially GPS and Bluetooth headphones, but headphone pairing frustrated one user.
  • 3.8
    based on 3 reviews
    contactless payments: 3.8, based on 3 reviews
    Garmin Pay and NFC are supported and useful, but reviewers note Garmin’s payment system lacks the polish or bank support of rivals.
  • 3.8
    based on 3 reviews
    health tracking accuracy: 3.8, based on 3 reviews
    Health tracking is useful but training-oriented; reviewers appreciated HRV and recovery metrics while noting it is not a full health wearable.
  • 3.7
    based on 4 reviews
    companion app quality: 3.7, based on 4 reviews
    Garmin Connect is useful and reliable for setup, syncing, visualization and customization, though music setup and app separation can confuse newcomers.
  • 3.7
    based on 4 reviews
    onboard music storage: 3.7, based on 4 reviews
    Onboard music is a useful feature with storage for offline audio, but setup and loading can be slow or confusing for some users.
  • 3.6
    based on 4 reviews
    user interface: 3.6, based on 4 reviews
    The interface is powerful but polarizing: some find it easy once learned, while newcomers can find it dense or confusing.
  • 3.5
    based on 2 reviews
    app ecosystem: 3.5, based on 2 reviews
    Connect IQ adds watch faces, data fields and apps, but reviewers describe the ecosystem as useful rather than Apple-level and sometimes limited.
  • 3.5
    based on 1 review
    call handling: 3.5, based on 1 review
    Call handling is basic: Android users can respond or reject calls through the watch, but it still relies heavily on the paired phone.
  • 3.5
    based on 1 review
    safety features: 3.5, based on 1 review
    Safety features exist through optional Garmin tools such as LiveTrack, though the reviews provide limited evaluation beyond availability.
  • 3.5
    based on 1 review
    style and design: 3.5, based on 1 review
    Style is utilitarian rather than flashy, but reviewers consider it acceptable for everyday wear if you choose muted colors.

Cons

  • 3.2
    based on 2 reviews
    charging convenience: 3.2, based on 2 reviews
    Charging is functional but not premium; Garmin’s common cable is convenient for Garmin owners, while the proprietary setup feels dated to one reviewer.
  • 2.9
    based on 4 reviews
    menu navigation: 2.9, based on 4 reviews
    Menu navigation is the clearest weakness, with several reviewers calling it complex or confusing despite button-control advantages.
  • 2.5
    based on 1 review
    third-party app support: 2.5, based on 1 review
    Third-party app support exists through Connect IQ, Strava, Komoot and music apps, but reviewers describe it as limited versus mainstream smartwatches.
  • 1.0
    based on 3 reviews
    touchscreen responsiveness: 1.0, based on 3 reviews
    Touchscreen responsiveness scores poorly because the watch has no touchscreen; reviewers mostly frame that as a deliberate sport-watch tradeoff.

Compared With Category Average

Compared with other Smart Watch, this product is above average in size options, reliability, onboard music storage, below average in touchscreen responsiveness, menu navigation.

Attribute This product Category average Difference
touchscreen responsiveness 1.0 3.7 -2.7
size options 4.7 3.1 +1.6
reliability 4.8 3.7 +1.1
menu navigation 2.9 3.8 -0.9
onboard music storage 3.7 2.8 +0.9
contactless payments 3.8 2.8 +0.9
fit 4.7 3.9 +0.8
cross-platform compatibility 4.5 3.8 +0.7

FAQ

Is the Garmin Forerunner 255S good for runners?

Yes. Reviewers repeatedly describe it as a strong runner-focused watch with accurate GPS, coaching tools, race widgets, suggested workouts, and deep training analysis.

How long does the battery last in real use?

Reviewers commonly saw about a week or more depending on GPS, music, and oxygen-tracking use. Music streaming, multiband GPS, and continuous blood oxygen monitoring drain it faster.

Does the Forerunner 255S have a touchscreen?

No. It uses five physical buttons, which reviewers liked for workouts, swimming, gloves, and avoiding accidental touches, though newcomers may need time to learn the menus.

Is the display easy to read outdoors?

Yes. Reviewers praised the memory-in-pixel display for sunlight readability, low glare, and always-on practicality, even though it is not as vibrant as AMOLED.

How accurate are GPS and heart-rate tracking?

GPS accuracy is one of the strongest themes, especially with multiband GNSS. Heart-rate tracking is generally strong for a wrist watch, but some reviewers still prefer a chest strap for high-intensity precision.

Are the music features worth it?

They can be useful for offline listening, with storage and supported services, but the reviews are mixed because setup, headphone pairing, and loading music can feel slow or confusing.

Is it a full smartwatch replacement?

Not really. It handles notifications, basic phone controls, Garmin Pay, music, weather, and apps, but reviewers frame it as a training watch first and a basic smartwatch second.

Consider This Instead

If you want better touchscreen responsiveness

Choose Coros Pace Pro. It scores 4.8 vs 1.0 for touchscreen responsiveness, with a 3.7 overall score.

Compare

If you want better third-party app support

Choose Samsung Galaxy Watch 8. It scores 4.8 vs 2.5 for third-party app support, with a 4.0 overall score.

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If you want better menu navigation

Choose OnePlus Watch 3. It scores 4.6 vs 2.9 for menu navigation, with a 4.0 overall score.

Compare

If you want better charging convenience

Choose Suunto Vertical 2. It scores 4.5 vs 3.2 for charging convenience, with a 3.8 overall score.

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