Garmin Forerunner® 255, GPS Running Smartwatch, Advanced Insights, Long-Lasting Battery, Slate Gray
Best for
Best triathlon / multisport
Amazon rating
Amazon aggregate, one input among many in the Verdict Score
Based on 1 trusted source
Current price
$242.90
Updated May 17, 2026 · 1 min read
Sources behind this verdict
10 reviewers weighted by source trust
The consensus
What reviewers found
Synthesized across the trust-weighted source mix below.
Across the reviewers we read, the Forerunner 255 is the watch that keeps getting recommended specifically because it brought triathlon-grade features down into the mid-tier. dcrainmaker.com explicitly calls out that 'the Forerunner 255 is now a multisport triathlon watch, sure, it's also a running watch, but it can now swim/bike/run with the best of them.' Multiple high-trust r/Garmin threads echo this, with long-term owners citing dependable use across road running, trail running, cycling, and pool and open-water swimming. The trust-weighted picture is unusually positive: r/Garmin posters repeatedly describe it as 'probably the best Garmin to get into Garmin watches' with reasonable pricing, strong battery, accurate multi-band GPS, and the full Garmin training-load and recovery stack.
What reviewers liked
- Full triathlon and open-water swim support, validated by dcrainmaker.com
- Multi-band GPS reported as highly accurate by long-term r/Garmin owners
- Strong battery life (multiple days mixed use, ~30 hours GPS) per specialist-community consensus
- Among the highest Amazon ratings in the category (4.7 across 4,000+ reviews)
Where it falls short
- MIP screen, not AMOLED, dimmer indoors than the 165/265/965
- No built-in topographic maps, a gap versus the 965 and Fenix line
- r/GarminWatches threads note the design is starting to feel dated next to newer Forerunners
- Some long-term owners report battery degradation after a year or more of use
Across the reviewers we read, the Forerunner 255 is the watch that keeps getting recommended specifically because it brought triathlon-grade features down into the mid-tier. dcrainmaker.com explicitly calls out that 'the Forerunner 255 is now a multisport triathlon watch, sure, it's also a running watch, but it can now swim/bike/run with the best of them.' Multiple high-trust r/Garmin threads echo this, with long-term owners citing dependable use across road running, trail running, cycling, and pool and open-water swimming.
The trust-weighted picture is unusually positive: r/Garmin posters repeatedly describe it as 'probably the best Garmin to get into Garmin watches' with reasonable pricing, strong battery, accurate multi-band GPS, and the full Garmin training-load and recovery stack. Criticism is muted and mostly about what it doesn't have, no AMOLED screen, no built-in maps, and an aging design compared to the 165 and 265. Some r/GarminWatches threads note that newer models (570) have superseded it on paper, though they generally concede it's still the value pick if found below MSRP.
The consensus across both expert and specialist-community signals is that if you swim or bike in addition to running, or you simply want the deepest Garmin feature set at this price, the 255 remains the trust-weighted answer.
- Highlight 1
- Built with a slim design and an always-on, full-color display that’s light on the wrist and easy to read even in direct sunlight — with available sizes of 46 mm and 41 mm
- Highlight 2
- Forerunner 255 provides up to 14 days of battery life in smartwatch mode and up to 30 hours in GPS mode for a full picture of your health — from sleep to training
- Highlight 3
- Morning report summarizes your sleep, HRV status and daily workout suggestion in one place as soon as you wake up (This device is intended to give an estimate of your activity and metrics)
- Highlight 4
- Get ready for your next race with training tips, personalized daily suggested workouts and completion time predictions based on course details, weather and performance
- Highlight 5
- View your entire week of daily suggested workouts, which adapt after every run to match your performance and recovery
- Highlight 6
- HRV status tracks your heart rate variability while you sleep, giving you greater insight into your overall wellness, recovery and training performance (This device is intended to give an estimate of your activity and metrics)
- Highlight 7
- Get free adaptive training plans from Garmin Coach for a 5K, 10K and half-marathon, or create your own custom workouts in the Garmin Connect smartphone app
- Highlight 8
- Evaluates your current training status to indicate if you’re undertraining or overdoing it; offers additional performance monitoring features, including recovery time after your workouts
FR255 is probably the best Garmin to get into Garmin watches. It's reasonably priced, great battery, accurate GPS, and does most stuff.
I've been using 255 Music for 15 months and am completely satisfied. I run 40 mpw, mostly trails. I've also used it for cycling and swimming.
Trust tier reflects our editorial assessment of the source, not the individual quote. Hover for the rationale. See how we tier sources →
“Garmin Forerunner 255 Trash or Treasure? Honest Review” · YouTube
If the consensus convinced you
Check current price on Amazon
Pricing and availability change frequently. Tap through to confirm before buying.