You're progressing. It's time for the next step. Gain insights into training and recovery necessary to achieve your best time yet.
Get insight into sleep, pulse variability status, and daily exercise through the morning report.
Charge less and 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 built-in triathlon features and over 30 activity profiles.
Plan your strategy with recommended workout for the day, course details, and other race widget options.
Utilize a full range of advanced measurements and training tools to reach your goals.
Pay for your post-workout coffee with Garmin Pay™1 contactless payment solution.
READY FOR LONG-DISTANCE RUNNING
With 14 days of battery life in smartwatch mode and up to 30 hours in GPS mode, you'll have continuous insight into your daily health and nighttime sleep.
AS LIGHT AS A FEATHER
Thanks to its sleek design and 49g weight, you'll almost forget you're wearing the Forerunner® 255, even while sleeping.
SWEAT-READY MATERIALS
Equipped with convenient buttons and a silicone strap, this watch is ready for wear and tear with durable Corning® Gorilla® Glass 3.
Light on the Wrist, Heavy on Features
MORNING REPORT
Receive a sleep summary right after waking up, including pulse variability status and weather conditions. You can even customize the report to display what you want.
PULSE VARIABILITY STATUS
Get deeper insights into your overall health, training, and recovery through pulse variability during sleep, based on technology developed by our Firstbeat Analytics™ team.
BUILT-IN SPORTS APPS
Take advantage of over 30 built-in activities, including profiles for triathlon and open water swimming – new to the Forerunner 255 series. Easily switch to the next activity in races and combined exercises with just one button press.
RACE WIDGET
Prepare for your next race with training tips, personalized recommended daily exercises, and finish time predictions based on course details, weather conditions, and performance.
RECOMMENDED WORKOUTS
In the Garmin Connect™ smartphone app calendar, review recommended daily workouts for the entire week, adapting after each run to match your performance and recovery.
GARMIN COACH
Free customizable training plans cover distances of 5k, 10k, and half-marathon, including advice from expert coaches tailored to you and your goals.
TRIATHLON AND MULTISPORT ACTIVITY PROFILES
Use built-in profiles for triathlon, duathlon, combination exercise, and swim/run transitions with a single press. Or create your own multisport activity profile.
Running Power
When using a running dynamics sensor or HRM-Pro™ sensor, get continuous power measurements that you transmit to the ground during your run to help you regulate effort.
RECOVERY TIME
From your last workout, but also from your overall stress, sleep, and daily activities outside of exercise, learn how much recovery you need before your next intense workout.
PacePro™ Feature
To help you plan your race day strategy, this feature provides GPS pace guidance for your selected course or distance so you can adjust your effort to what lies ahead.
TRAINING STATUS
By applying new indicators like pulse variability status, recent exercise history, and performance, get an easy-to-understand view of your overall effort, whether you're training productively, peaking, or overloading.
ACUTE TRAINING LOAD
Review your training history and compare recent exercise intensity to optimal range to improve fitness.
TRAINING EFFECT
Learn how exercise affects your endurance, speed, and strength from aerobic and anaerobic exercise effect data.
PERFORMANCE CONDITION
While running, analyze your pace and pulse to assess your current condition in real-time.
RUNNING DYNAMICS
When using a running dynamics sensor or HRM-Pro sensor, the Forerunner 255 watch measures key running parameters such as cadence, stride length, ground contact time, and ground contact time balance, among other data, and compares it to others in the Garmin Connect app.
Courses
Create or find courses in our Garmin Connect app, and you'll never run out of running ideas. You can plan them on other platforms like Strava and Komoot and then automatically sync them with your Forerunner device.
TRACK RUNNING
Ready for speed training? Enter the track running activity with the built-in feature, input your lane number to record the exact segment distance, and see your distances expressed in meters.
RACE TIME PREDICTOR
Based on your running history and overall fitness, get pace estimates for distances of 5k, 10k, or even a marathon. Trend data also highlights the impact of your training over time.
CROSS-TRAINING
Mix up your training with different types of exercises. Free HIIT activities, strength training, cardio, yoga, and pilates are included with the watch, and you can download more in the Garmin Connect app.
Deep Insight into Health Level.
WRIST-BASED HEART RATE SENSOR
The watch continuously measures your heart rate2 with our latest generation heart rate sensor and will alert you if it stays too high or too low while at rest. It also measures your effort during activities, even while swimming.
BODY BATTERY™ ENERGY SENSOR
Measure the level of energy in your body to find the best time for activity and rest2.
SLEEP SCORE AND ADVANCED SLEEP TRACKING
Determine the quality of your sleep and gain insights for progress. You can even track different sleep stages, as well as pulse, stress, pulse oximetry3, and breathing.
PULSE OXIMETRY SENSOR
The wrist-based pulse oximeter sensor3 monitors blood oxygen saturation levels, allowing for advanced sleep tracking and acclimatization to higher altitudes.
Menstrual Tracking
Track your menstrual cycle or pregnancy in the Garmin Connect app. Record symptoms, receive exercise and nutrition tips, and much more. You can even see and record details on your wrist using the women's health tracking app.
INTENSITY MINUTES
The intensity minutes feature shows when you've earned them during the day and during which activities.
STRESS TRACKING
Find out if you're having a calm, balanced, or stressful day. Relaxation reminders will even prompt you to perform a short breathing activity when the watch recognizes that you're stressed.
HEALTH SNAPSHOT™
Record a two-minute health snapshot session to capture key statistics, including pulse2, pulse variability, pulse oximetry3, breathing, and stress. Then, use the Garmin Connect app on your compatible smartphone to generate a report with these statistics that you can share.
Stay Connected Every Step of the Way.
SUPPORT FOR MULTI-FREQUENCY GNSS
Access multiple global navigation satellite systems and multiple frequencies transmitted by navigation satellites for greater accuracy in areas where GNSS signals are obstructed, weak, or not usually penetrated, ensuring superior accuracy of your distance and speed, even in challenging environments.
GARMIN PAY CONTACTLESS PAYMENT FEATURE
Skip the checkout lines in stores with the Garmin Pay1 contactless payment solution with supported service providers.
SMART NOTIFICATIONS
Receive emails, messages, and alerts directly on your watch when paired with an Apple® or Android™ smartphone. You can even reply to messages if you have an Android phone.
SAFETY AND TRACKING FEATURES
If you don't feel safe or if the watch recognizes an accident, safety and accident recognition features4 will send your location to emergency contacts. By default, accident detection is only enabled for selected activity profiles.
LIVETRACK FEATURE
LiveTrack allows your friends and family to track your location in real-time4 and even view your previously planned routes. Rest assured that your loved ones will know exactly where you're running.
Garmin Connect
Review health and fitness information, connect and compete with friends, sign up for challenges to earn medals, and more, all in one free app without a subscription.
CONNECT IQ™ STORE
Download custom watch faces, add data fields, and download apps and widgets from the Connect IQ Apps store to your compatible smartphone.
Smartwatch mode: Up to 14 days, GPS mode with GPS only: Up to 30 hours
All systems in GPS mode: Up to 25 hours
All systems in GPS mode with multiple bands: Up to 16 hours
You're progressing. It's time for the next step. Gain insights into training and recovery necessary to achieve your best time yet.
Get insight into sleep, pulse variability status, and daily exercise through the morning report.
Charge less and 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 built-in triathlon features and over 30 activity profiles.
Plan your strategy with recommended workout for the day, course details, and other race widget options.
Utilize a full range of advanced measurements and training tools to reach your goals.
Pay for your post-workout coffee with Garmin Pay™1 contactless payment solution.
READY FOR LONG-DISTANCE RUNNING
With 14 days of battery life in smartwatch mode and up to 30 hours in GPS mode, you'll have continuous insight into your daily health and nighttime sleep.
AS LIGHT AS A FEATHER
Thanks to its sleek design and 49g weight, you'll almost forget you're wearing the Forerunner® 255, even while sleeping.
SWEAT-READY MATERIALS
Equipped with convenient buttons and a silicone strap, this watch is ready for wear and tear with durable Corning® Gorilla® Glass 3.
Light on the Wrist, Heavy on Features
MORNING REPORT
Receive a sleep summary right after waking up, including pulse variability status and weather conditions. You can even customize the report to display what you want.
PULSE VARIABILITY STATUS
Get deeper insights into your overall health, training, and recovery through pulse variability during sleep, based on technology developed by our Firstbeat Analytics™ team.
BUILT-IN SPORTS APPS
Take advantage of over 30 built-in activities, including profiles for triathlon and open water swimming – new to the Forerunner 255 series. Easily switch to the next activity in races and combined exercises with just one button press.
RACE WIDGET
Prepare for your next race with training tips, personalized recommended daily exercises, and finish time predictions based on course details, weather conditions, and performance.
RECOMMENDED WORKOUTS
In the Garmin Connect™ smartphone app calendar, review recommended daily workouts for the entire week, adapting after each run to match your performance and recovery.
GARMIN COACH
Free customizable training plans cover distances of 5k, 10k, and half-marathon, including advice from expert coaches tailored to you and your goals.
TRIATHLON AND MULTISPORT ACTIVITY PROFILES
Use built-in profiles for triathlon, duathlon, combination exercise, and swim/run transitions with a single press. Or create your own multisport activity profile.
Running Power
When using a running dynamics sensor or HRM-Pro™ sensor, get continuous power measurements that you transmit to the ground during your run to help you regulate effort.
RECOVERY TIME
From your last workout, but also from your overall stress, sleep, and daily activities outside of exercise, learn how much recovery you need before your next intense workout.
PacePro™ Feature
To help you plan your race day strategy, this feature provides GPS pace guidance for your selected course or distance so you can adjust your effort to what lies ahead.
TRAINING STATUS
By applying new indicators like pulse variability status, recent exercise history, and performance, get an easy-to-understand view of your overall effort, whether you're training productively, peaking, or overloading.
ACUTE TRAINING LOAD
Review your training history and compare recent exercise intensity to optimal range to improve fitness.
TRAINING EFFECT
Learn how exercise affects your endurance, speed, and strength from aerobic and anaerobic exercise effect data.
PERFORMANCE CONDITION
While running, analyze your pace and pulse to assess your current condition in real-time.
RUNNING DYNAMICS
When using a running dynamics sensor or HRM-Pro sensor, the Forerunner 255 watch measures key running parameters such as cadence, stride length, ground contact time, and ground contact time balance, among other data, and compares it to others in the Garmin Connect app.
Courses
Create or find courses in our Garmin Connect app, and you'll never run out of running ideas. You can plan them on other platforms like Strava and Komoot and then automatically sync them with your Forerunner device.
TRACK RUNNING
Ready for speed training? Enter the track running activity with the built-in feature, input your lane number to record the exact segment distance, and see your distances expressed in meters.
RACE TIME PREDICTOR
Based on your running history and overall fitness, get pace estimates for distances of 5k, 10k, or even a marathon. Trend data also highlights the impact of your training over time.
CROSS-TRAINING
Mix up your training with different types of exercises. Free HIIT activities, strength training, cardio, yoga, and pilates are included with the watch, and you can download more in the Garmin Connect app.
Deep Insight into Health Level.
WRIST-BASED HEART RATE SENSOR
The watch continuously measures your heart rate2 with our latest generation heart rate sensor and will alert you if it stays too high or too low while at rest. It also measures your effort during activities, even while swimming.
BODY BATTERY™ ENERGY SENSOR
Measure the level of energy in your body to find the best time for activity and rest2.
SLEEP SCORE AND ADVANCED SLEEP TRACKING
Determine the quality of your sleep and gain insights for progress. You can even track different sleep stages, as well as pulse, stress, pulse oximetry3, and breathing.
PULSE OXIMETRY SENSOR
The wrist-based pulse oximeter sensor3 monitors blood oxygen saturation levels, allowing for advanced sleep tracking and acclimatization to higher altitudes.
Menstrual Tracking
Track your menstrual cycle or pregnancy in the Garmin Connect app. Record symptoms, receive exercise and nutrition tips, and much more. You can even see and record details on your wrist using the women's health tracking app.
INTENSITY MINUTES
The intensity minutes feature shows when you've earned them during the day and during which activities.
STRESS TRACKING
Find out if you're having a calm, balanced, or stressful day. Relaxation reminders will even prompt you to perform a short breathing activity when the watch recognizes that you're stressed.
HEALTH SNAPSHOT™
Record a two-minute health snapshot session to capture key statistics, including pulse2, pulse variability, pulse oximetry3, breathing, and stress. Then, use the Garmin Connect app on your compatible smartphone to generate a report with these statistics that you can share.
Stay Connected Every Step of the Way.
SUPPORT FOR MULTI-FREQUENCY GNSS
Access multiple global navigation satellite systems and multiple frequencies transmitted by navigation satellites for greater accuracy in areas where GNSS signals are obstructed, weak, or not usually penetrated, ensuring superior accuracy of your distance and speed, even in challenging environments.
GARMIN PAY CONTACTLESS PAYMENT FEATURE
Skip the checkout lines in stores with the Garmin Pay1 contactless payment solution with supported service providers.
SMART NOTIFICATIONS
Receive emails, messages, and alerts directly on your watch when paired with an Apple® or Android™ smartphone. You can even reply to messages if you have an Android phone.
SAFETY AND TRACKING FEATURES
If you don't feel safe or if the watch recognizes an accident, safety and accident recognition features4 will send your location to emergency contacts. By default, accident detection is only enabled for selected activity profiles.
LIVETRACK FEATURE
LiveTrack allows your friends and family to track your location in real-time4 and even view your previously planned routes. Rest assured that your loved ones will know exactly where you're running.
Garmin Connect
Review health and fitness information, connect and compete with friends, sign up for challenges to earn medals, and more, all in one free app without a subscription.
CONNECT IQ™ STORE
Download custom watch faces, add data fields, and download apps and widgets from the Connect IQ Apps store to your compatible smartphone.
Smartwatch mode: Up to 14 days, GPS mode with GPS only: Up to 30 hours
All systems in GPS mode: Up to 25 hours
All systems in GPS mode with multiple bands: Up to 16 hours
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