Forerunner 255

GPS RUNNING SMARTWATCH

• Get an overview of your sleep, HRV status and daily workout with morning report.
• Charge less, train more with up to 14 days of battery life in smartwatch mode and up to 30 hours in GPS mode.
• Push your limits with a built-in triathlon feature and 30+ activity profiles.
• Plan your strategy with daily suggested workouts, course details and more on the race widget.
• Utilize a full suite of advanced metrics and training tools to reach your goals.
• Pay for your post-workout coffee with Garmin Pay contactless payments.
  
  

HRV STATUS
Gain a deeper understanding of your overall health, recovery and training performance through heart rate variability while you sleep, based on technology developed by our Firstbeat Analytics team.

BUILT-IN SPORTS APPS
Tap into 30+ built-in activities, including the triathlon and open-water swimming profiles — new to the Forerunner 255 series. For races and brick workouts, transition to the next activity with a single button press.

MORNING REPORT
Receive an overview of your sleep, recovery and training outlook as soon as you wake up — alongside HRV status and weather. You can even customize your report to show you what you want to see.

DAILY SUGGESTED WORKOUTS
View your entire week of daily suggested workouts, which adapt after every run to match your performance and recovery as well as the races coming up in your Garmin Connect smartphone app calendar.

RUNNING DYNAMICS
When using a Running Dynamics Pod or HRM-Pro monitor, the Forerunner 255 watch measures crucial running metrics such as cadence, stride length, ground contact time and balance, and more — while comparing to others in the Garmin Connect app.

VISUAL RACE PREDICTOR
Based on your running history and overall fitness level, get an estimate of what your pace could be for a 5K, 10K — or even a marathon. Plus, trend data highlights your training’s impact over time

WRIST-BASED HEART RATE
The watch constantly samples your heart rate with our latest-generation heart rate sensor and will alert you if it stays too high or too low while you’re at rest. It also helps gauge how hard you work during activities — even while swimming.

BODY BATTERY ENERGY MONITORING
Track your body’s energy levels so you can find the best times for activity and rest.

PULSE OX SENSOR
This wrist-based Pulse Ox sensor monitors blood oxygen saturation levels to support advanced sleep monitoring and altitude acclimation.

MULTI-BAND GNSS SUPPORT
Access multiple global navigation satellite systems, and get access to multiple frequencies sent by navigation satellites for improved accuracy in areas where GNSS signals are reflected, weak or typically don't penetrate — giving you superior accuracy for how far and how fast you’ve run — even in challenging environments.

SAFETY AND TRACKING FEATURES
If you feel unsafe or if your watch senses that an incident occurred, the Assistance and incident detection features send your location to emergency contacts. Incident detection is enabled by default for select activity profiles only.

GARMIN PAY™ CONTACTLESS PAYMENTS