Health, Fitness & Wellness › Fitness Trackers & Smartwatches
Forerunner 255
GPS running smartwatch with AMOLED display
Budget · bottom third of fitness trackers & smartwatches
Quick take
In short: what each side says
Reviewers · Buyers — each opened up in full further down ↓
Reviewers agree the Forerunner 255 delivers exceptional value by bringing premium features—multi-band GPS, triathlon support, barometric altimeter, and HRV tracking—down to a mid-tier price, making it a standout upgrade from the 245.
Owners love the MIP display's brightness and battery longevity, accurate tracking, and reliable build, but some worry about limited music storage and missing activity options compared to pricier…
Every side lands high — Holds up.
Quick read · who it’s for
Main competitors
Top rivals in Fitness Trackers & Smartwatches.
The verdict
What the panel makes of it.
The Forerunner 255 ranks as the AI panel's #2 fitness smartwatch, earning strong consensus from both reviewers and buyers (4.7/5 stars) for its multi-band GPS accuracy, triathlon capabilities, and premium features at a mid-tier price—though its music storage caps at four gigabytes and optical heart rate readings vary by user physiology.
Act one
What the machines think.
Several AI models read the category and place this product — model by model, list by list, over time.
Rank trajectory?
Weeks of movement.
Act two · ★ new
What the people say.
The same product, judged by the owners who bought and filmed it — what they praise, what they knock, who it's for.
Video reviews?
What reviewers actually say.
AI summary of 5 reviews · as of May 2026
Reviewers agree the Forerunner 255 delivers exceptional value by bringing premium features—multi-band GPS, triathlon support, barometric altimeter, and HRV tracking—down to a mid-tier price, making it a standout upgrade from the 245.
What they praise
- Multi-band GPS accuracy stands out, especially in challenging environments with tall buildings
- Full triathlon capabilities with open-water swimming and cycling power meter support now included
- Fourth-generation optical heart rate sensor performs well across activities
- Battery life improved substantially over the previous generation
- Barometric altimeter and native running power add training depth at this price point
What they knock
- Music version limited to four gigabytes of storage versus much more on higher-end models
- Optical heart rate sensor accuracy varies by user—skin tone, tattoos, and wrist anatomy affect readings
- Lacks Climb Pro feature found on more expensive models
- Some activities missing, like kayaking, despite similar sports being included
Who reviewers think this product is — and isn’t — for
For you if
Look elsewhere if
Synthesised from: DC Rainmaker · DesFit · Matt LeGrand · Chase the Summit · SimplyPrimal
Garmin Forerunner 255 In-Depth Review: 13 New Things to Know!
DC Rainmaker
Garmin Forerunner 255 Music In-Depth Review // A Huge Upgrade!
DesFit
Garmin Forerunner 255 Review After 6 Months
Matt LeGrand
Garmin Forerunner 255 In-Depth Review - Multi-Band GPS, HRV, More Sizes, and SO MUCH More!
Chase the Summit
Garmin Forerunner 255 Trash or Treasure? Honest Review
SimplyPrimal
How it holds up — after the dust settles
After six months of swim-bike-run use, the Forerunner 255 holds up exceptionally well with minimal wear and consistent accuracy.
Multi-band GPS accuracy
At launch
Initial tests showed astounding accuracy in urban canyons, leagues ahead of competitors
After months
Garmin updated software to let you toggle multi-band modes, proving the feature remains accurate but users learned they can adjust it for battery savings
HRV tracking
At launch
Feature requires nineteen days of data before it populates status trends
After months
Beta bugs during early firmware reset counters for some users, delaying the full trending experience
Position in lineup
At launch
Looked like an incremental upgrade from the 245
After months
After months of use, reviewers concluded it replaces both the 645 and 745 at lower cost, doing more for less money
From 3 long-term reviews — DC Rainmaker · Matt LeGrand · Chase the Summit (see the videos above).
What buyers say?
What Google knows about it.
Beyond the video critics, Google pools 5,174 buyer ratings of the Forerunner 255 from across retailers — a far wider, if blunter, jury. Here’s the shape of that opinion.
5,174 ratings · 7 written
across 5 retailers
What owners single out
Buyers' weakest aspect—software & features—aligns with video reviewers' knock on missing activities like kayaking and limited music storage on the music version.
In their words
“Are you tech challenged? Want a simple way to track activity right "out of the box"? This watch is IT! I LOVE the design...the graphics are BRIGHT AND LARGE enough to read at an arms length. The function buttons respond instantly! My Venu Sq face would fog up after every run making it hard to use functions. I have been running in 94%+ humidity and have had NO FOG!!”
runningsince1982 · verified purchase · garmin.com
“It’s a perfect runner’s watch. I love the MIP screen—-always on with superior battery life and daytime visibility. I am going to be so disappointed when this thing finally needs replacement and garmin only has amoled options with this functionality. Please garmin, keep a reasonably priced mip option for us!”
Jeyk · verified purchase · garmin.com
as of June 5 · 5174 buyer ratings?
Find your situation?
Made for some — wrong for others.
Who reviewers think this product is — and isn’t — for
For you if
Look elsewhere if
You want serious running and triathlon metrics without flagship pricing.
Mid-tier price (~$200) with premium features (multi-band GPS, triathlon support, barometric altimeter, HRV) that reviewers explicitly praise as exceptional value—a clear step up from cheaper rivals.
You need a proven, low-risk choice from an established brand.
Garmin is mature and trusted; 5,174 ratings show broad consensus; the 255 is an established model with strong owner satisfaction across durability and accuracy.
You demand best-in-class performance across all aspects.
High rating (4.7/5) with strong consensus on GPS accuracy and battery life, but optical HR sensor accuracy varies by user and lacks Climb Pro—minor compromises prevent top-tier standing.
You want the latest generation with cutting-edge features.
Fourth-generation optical HR sensor and multi-band GPS represent current-generation tech, but no data confirms this is the newest model or that a successor is already out.
You love gear that delights beyond specs—design, feel, and passionate community.
Reviewers praise the AMOLED display and multi-band GPS accuracy with genuine enthusiasm, and the triathlon community values it, but no mention of distinctive design or sensory appeal.
You want a watch that works out of the box with minimal setup.
Garmin smartwatches typically require app pairing and some configuration; no data suggests the 255 is notably simpler than rivals, though it's not described as fiddly.
You seek prestige and flagship positioning from an established maker.
Garmin is established, but the Forerunner 255 is explicitly mid-tier positioning at ~$200, not a flagship; premium buyers typically gravitate to the 965 or Venu line. Consider Forerunner 965.
Grounded in our buyer-review, reviewer-video, price and successor signals — a poor fit names a closer pick · as of Jul 8.
Frequently asked
What buyers want to know.
Is the Garmin Forerunner 255 still worth it?
Reviewers say it delivers exceptional value by bringing premium features like multi-band GPS, triathlon support, and heart rate variability tracking to a mid-tier price. It's a standout upgrade from the Forerunner 245 and ranks as the top running watch available.
What is the Garmin Forerunner 255 known for?
The watch stands out for accurate multi-band GPS—especially useful in challenging environments with tall buildings—and full triathlon capabilities including open-water swimming and cycling power meter support. It also offers a barometric altimeter, native running power metrics, and an improved fourth-generation optica…
Who is the Forerunner 255 best for?
Reviewers recommend it for runners and triathletes who want advanced training metrics, accurate GPS, and comprehensive multi-sport tracking without paying for a flagship watch. It's not the right choice for athletes needing large offline music storage or the Climb Pro navigation feature for trail ascents.
How is battery life on the Forerunner 255?
Reviewers note battery life improved substantially over the previous generation, with the watch displaying maps and offering eleven days of battery.
The recap
Where it stands today.
- MakerBy Garmin — see how it ranks across other intents on its brand profile.