- Alternative: runner-focused alternatives Polar Pacer Pro is presented as a lower-cost alternative with many similar tracking features.
- Worse: GPS signal acquisition The reviewer could start runs more quickly on the 255S than on the Polar Pacer Pro.
Garmin Forerunner 255S Review
Bottom Line
Choose the Garmin Forerunner 255S if you want a compact, accurate, long-lasting training watch with serious running and multisport tools. Skip it if you expect a slick touchscreen smartwatch, effortless music setup, or deep app support.
Best for
Best for runners, smaller-wrist users, and casual multisport athletes who want accurate tracking, long battery life, and rich Garmin training tools in a compact package.
Not for
Not for buyers who want a flashy AMOLED touchscreen smartwatch, broad third-party apps, effortless onboard music, or the deepest sleep and health insights.
Verdict
Reviewers consistently frame the Garmin Forerunner 255S as a compact training-first watch that brings higher-end tools to smaller wrists: accurate GPS, strong heart-rate performance, rich workout modes, useful recovery prompts, and battery life that often stretches about a week or more. The tradeoff is that Garmin keeps the experience practical rather than luxurious. The memory-in-pixel display earns praise outdoors and helps battery life, but it lacks AMOLED vibrancy and touch input. Several reviewers also found menus, Connect IQ, or music setup confusing or slow, especially for newcomers. Overall, the evidence points to a dependable, high-value sports watch for runners and casual multisport users who prioritize training depth over smartwatch polish.
Compared in Reviews
Products reviewers directly compared with this model, grouped into quick takeaways.
- Better: serious health monitoring The 255S lacks some health-monitoring depth found on the Apple Watch.
- Similar: dual-band GPS concept The review likens Garmin's multi-band GNSS approach to dual-band GPS on Apple's Ultra watch.
Feature Scorecards
Summary
44 reviewed features- Very positive 4.5-5.0 23% 10 features
- Positive 3.5-4.4 55% 24 features
- Neutral 2.5-3.4 23% 10 features
- Negative 1.5-2.4 0% 0 features
- Very negative below 1.5 0% 0 features
Pros
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Step counting received one clear positive judgment, with the reviewer finding it nearly spot-on against manual counting and other watches.
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Fit was especially strong for smaller wrists, with reviewers describing the watch as unobtrusive, well-sized, and easy to wear.
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Comfort was one of the strongest areas, with reviewers repeatedly praising the light, compact watch for day, workout, and sleep wear.
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Size options were praised because the smaller S model makes serious Garmin training tools accessible to more wrist sizes.
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Workout variety was praised as broader than a basic running watch, especially because swimming, cycling, multisport, triathlon, and extensive workout tools are supported.
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Fitness tracking accuracy was a consistent strength, with reviewers praising run, workout, and training data as accurate and useful across several use cases.
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GPS accuracy was one of the strongest themes, with multi-band GNSS often praised as accurate or spot-on; one reviewer found it merely okay beside higher-end Garmin models.
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Outdoor visibility was a major strength, with reviewers praising direct-sunlight readability and low glare from the memory-in-pixel display.
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Operating system experience received one positive long-term judgment, with the reviewer describing Garmin's familiar system as easy to use.
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Reviewers generally found heart-rate tracking strong for a wrist device, with several comparisons to straps or other watches; caveats centered on optical sensors and fast HIIT-style changes.
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Value for money was a major strength, with reviewers repeatedly calling the 255S a high-value training watch despite some cheaper rivals.
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Customization was a clear strength, from screen layouts and data fields to exercise settings and watch faces.
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Coaching tools and daily suggestions were widely liked, with reviewers describing them as personal-trainer-like, helpful for race prep, or a useful morning prompt.
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Band quality was positive overall, with reviewers calling the strap well-built, tough, and comfortable.
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Display quality was praised for clarity, compact usefulness, and always-on practicality, though reviewers acknowledged it lacks AMOLED polish.
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Battery life was widely praised, often landing around a week or more, but music, GPS, backlight, and long-term decline introduced caveats.
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Button controls were mostly praised for workouts, water use, and avoiding accidental touches, though the button-only approach may not suit touchscreen-first users.
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Water resistance was treated positively for swimming, rain, showering, and button use underwater.
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Cross-platform compatibility was positive in the evidence, with the Garmin Connect experience described as consistent across supported phone platforms.
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Reliability was positive overall, with reviewers calling the watch dependable, practical, solid, or long-lasting in regular use.
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The companion app was mostly useful for setup, syncing, visualization, and customization, though some Garmin workflows still required extra learning.
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Wellness insights such as Morning Report and Body Battery were useful to reviewers, especially when they summarized recovery or daily readiness without becoming overwhelming.
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Notifications worked well despite the compact display, and one reviewer showed texts arriving clearly with quick-response options.
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Style and design were mostly practical rather than flashy: reviewers liked the tiny, capable form but did not call it a sleek fashion watch.
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Build quality received one clear positive judgment, with the bezel described as solid and made from fiber-reinforced polymer.
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Watch face quality received one positive mention, mainly because the reviewer found many available faces for the 255S.
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Durability was generally positive, especially in long-term use, though one reviewer cautioned that ruggedness was hard to judge.
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Materials quality was mixed: the bezel and strap were praised, but Gorilla Glass was called scratch-prone.
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Recovery insights were valued when they simplified training decisions, but HRV status drew criticism for complexity or taking too long to appear.
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Onboard music storage split reviewers: some praised offline storage and streaming support, while another found setup slow and confusing enough to carry a phone instead.
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Smartwatch features were considered useful but secondary; reviewers liked the basics while repeatedly framing the 255S as a training tool rather than a flashy smartwatch.
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Sleep tracking was useful and often close enough for general use, but reviewers noted it was less detailed or less sensitive than dedicated sleep-focused devices.
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Pairing reliability was mixed: watch setup and syncing were reliable in one review, while headphone pairing was criticized as time-consuming in another.
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Music controls worked, but the lack of touch interaction made them feel less polished than they could be.
Cons
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The overall user interface was mixed: long-term Garmin users found the learning curve manageable, while other reviewers found the interface confusing.
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Bluetooth connectivity was positive when headphones paired easily in one review, but another reviewer found headphone pairing slow during music setup.
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Garmin Pay worked for reviewers, but it was described as less slick or less compelling than rival watch payment systems.
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The app ecosystem was mixed: Connect IQ adds watch faces and extras, but reviewers also described app support as limited compared with richer smartwatch stores.
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Running power support was useful in concept but limited by the need for an external Garmin sensor.
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Software smoothness was a weakness: reviewers noted slow Connect IQ downloads or the need to bounce between Garmin apps.
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Third-party app support was useful mainly for fitness-related tools, but reviewers found it narrower than mainstream smartwatch app ecosystems.
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Menu navigation was polarizing, with one reviewer praising intuitive menus but several others calling Garmin navigation inconsistent, confusing, or daunting for newcomers.
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Charging convenience was a drawback because reviewers noted the lack of wireless charging and criticized the proprietary cable as dated.
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Blood oxygen tracking was treated as a battery-heavy feature rather than a standout health tool, with one reviewer recommending disabling continuous monitoring if battery matters.
Compared With Category Average
Compared with other Smartwatches, this product is above average in size options, step counting accuracy, fit, below average in software smoothness, menu navigation, blood oxygen tracking.
Summary
8 compared features- Above average 0.4+ pts higher 63% 5 features
- Same as average within 0.3 pts 0% 0 features
- Below average 0.4+ pts lower 38% 3 features
| Attribute | This product | Category average | Difference |
|---|---|---|---|
| size options | 4.7 | 3.2 | +1.5 |
| step counting accuracy | 5.0 | 3.7 | +1.3 |
| fit | 4.7 | 3.8 | +0.9 |
| software smoothness | 3.0 | 3.9 | -0.9 |
| menu navigation | 2.9 | 3.8 | -0.9 |
| onboard music storage | 3.6 | 2.8 | +0.8 |
| blood oxygen tracking | 2.5 | 3.4 | -0.9 |
| heart rate accuracy | 4.5 | 3.8 | +0.7 |
FAQ
Is the Garmin Forerunner 255S comfortable for small wrists?
Yes. Multiple reviewers praised the compact size, light weight, and sleep-friendly comfort, especially for smaller wrists.
How accurate is the GPS?
Most reviewers rated GPS accuracy highly, especially with multi-band GNSS. One reviewer found it only okay beside higher-end Garmin watches, but the broader pattern was strongly positive.
How long does the battery last?
Reviewers commonly reported about a week or more with normal use. Heavy GPS, music, backlight, or continuous blood oxygen tracking reduced battery life.
Is the music feature good?
It is mixed. Some reviewers liked offline storage and streaming support, while one long-term user found music setup slow, confusing, and not worth using without a phone.
Is it easy to use?
Button controls were often praised for workouts and wet conditions, but several reviewers said Garmin menus can feel confusing or daunting for newcomers.
Is it a good smartwatch?
It handles basics like notifications, payments, music, weather, alarms, and media controls, but reviewers mostly saw it as a training watch rather than a polished lifestyle smartwatch.
Is it useful beyond running?
Yes. Reviewers praised the broader workout support, including cycling, swimming, hiking, open-water swimming, and triathlon or multisport tracking.
Sample Expert Reviews We Analyzed
These are a few of the reviews included in our analysis.
Video Reviews
Article Reviews
techradar.com
- Review score
- 4.3/5
pinayhakawati.com
- Review score
- 3.5/5
Consider This Instead
If you want better blood oxygen tracking
Choose Garmin Lily 2 Active. It scores 5.0 vs 2.5 for blood oxygen tracking, with a 4.1 overall score.
If you want better charging convenience
Choose Suunto Vertical 2. It scores 4.9 vs 2.8 for charging convenience, with a 3.8 overall score.
If you want better menu navigation
Choose Coros Pace Pro. It scores 4.8 vs 2.9 for menu navigation, with a 3.6 overall score.
If you want better app ecosystem
Choose Apple Watch Ultra 2. It scores 5.0 vs 3.0 for app ecosystem, with a 4.1 overall score.
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