Garmin Forerunner 255 GPS Running Smartwatch Review: Advanced Insights and Unmatched Battery Life

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The Garmin Forerunner 255 GPS Running Smartwatch is designed for runners and fitness enthusiasts who seek advanced insights and long-lasting battery life. With a sleek design and a full-color display, it offers a comprehensive view of your health and performance. This smartwatch is equipped with features that help you optimize your training, monitor your wellness, and prepare for races.

Product Information

The Garmin Forerunner 255 comes in two sizes, 46 mm and 41 mm, to suit different wrist sizes. Its slim design and always-on, full-color display ensure easy readability even in direct sunlight. With up to 14 days of battery life in smartwatch mode and up to 30 hours in GPS mode, it provides extensive health and performance tracking.

Key Features:

  • Slim Design and Full-Color Display: Light on the wrist and easy to read in any lighting.
  • Long Battery Life: Up to 14 days in smartwatch mode and up to 30 hours in GPS mode.
  • Morning Report: Summarizes sleep, HRV status, and daily workout suggestions.
  • Personalized Training Plans: Adaptive workouts and race preparation tips.
  • HRV Status: Tracks heart rate variability during sleep for wellness insights.
  • Garmin Coach: Free adaptive training plans for various race distances.
  • Performance Monitoring: Evaluates training status and recovery time.
  • Advanced Running Dynamics: Measures power application, stride length, and more with compatible accessories.


Why People Prefer the Garmin Forerunner 255

The Garmin Forerunner 255 is favored for its advanced health and performance insights. Runners appreciate the personalized daily workout suggestions and the ability to monitor heart rate variability during sleep. The long battery life ensures that the watch can keep up with even the most rigorous training schedules.


The Forerunner 255 offers a morning report that summarizes sleep quality, HRV status, and daily workout suggestions as soon as you wake up. This feature provides a quick overview of your readiness for the day. The personalized training plans adapt based on your performance and recovery, ensuring that your workouts are always optimized for your current fitness level.

Additional Features

In addition to its core features, the Forerunner 255 includes advanced performance monitoring. It evaluates your current training status, indicating if you’re undertraining or overdoing it. With compatible accessories like the Running Dynamics Pod or HRM-Pro monitor (sold separately), you can access detailed running dynamics, including ground contact time balance and vertical ratio.

Other Users’ Opinions

Users of the Garmin Forerunner 255 often highlight its advanced insights and long battery life as major benefits. Many appreciate the personalized training plans and detailed performance metrics. The watch’s slim design and easy-to-read display are also frequently mentioned as positive aspects.

Our Verdict

The Garmin Forerunner 255 GPS Running Smartwatch is an excellent choice for serious runners and fitness enthusiasts. Its advanced insights, long battery life, and personalized training plans make it a standout option for those looking to optimize their training and monitor their health.

Pros and Cons


  • Advanced health and performance insights
  • Long battery life
  • Personalized training plans
  • Slim design and full-color display
  • Detailed running dynamics with compatible accessories


  • Additional accessories required for some advanced features
  • Higher price point compared to basic fitness trackers


The Garmin Forerunner 255 GPS Running Smartwatch is a powerful and versatile device that offers extensive health and performance tracking. Its sleek design, advanced features, and long battery life make it an excellent choice for runners and fitness enthusiasts.

See More Information and Buy on Amazon

Check out the Garmin Forerunner 255 GPS Running Smartwatch on Amazon

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