Forerunner® 255S

349.99

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Description

RUN AT A HIGHER LEVEL

You’re making strides. Now, let’s take the next step. Get the training and recovery insights you’ll need to notch your best time yet.

Report

Get an overview of your sleep, HRV status and daily workout with your morning report.

Heart_Rate_Sensors

Utilise a full suite of advanced metrics and training tools to reach your goals.

LIFESTYLE

Push your limits with a built-in triathlon feature and 30+ activity profiles.

race-predict

Plan your strategy with daily suggested workouts, course details and more on the race widget.

Garmin_Pay

Pay for your post-workout coffee with Garmin Pay™ contactless payments1.

Battery_Life

Charge less, train more with up to 12 days of battery life in smartwatch mode and up to 26 hours in GPS mode

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READY FOR THE LONG RUN

Get an uninterrupted picture of your daily health and nightly sleep with up to 12 days of battery life in smartwatch mode and up to 26 hours in GPS mode.

(ALMOST) AS LIGHT AS A FEATHER

With its sleek design and 39g weight, you’ll almost forget you’re wearing Forerunner® 255S — even when you’re asleep.

SWEAT-READY MATERIALS

Featuring easy-to-use buttons and a silicone band, this watch is ready to wear — and tear — with durable Corning® Gorilla® Glass 3.

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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 customise your report to show you what you want to see.

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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.

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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.

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RACE WIDGET

Get ready for your next race with training tips, personalised daily suggested workouts and completion time predictions based on course details, weather and performance.

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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.

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GARMIN COACH

Free adaptive training plans include 5K, 10K and half-marathon programs, featuring guidance from expert coaches that adapt to you and your goals.

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RUNNING POWER

When using a Running Dynamics Pod or HRM-Pro™ monitor, get a continuous measurement on your wrist of how much power you’re applying to the road as you run, so you can manage your effort.

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RECOVERY TIME

Know how long to recover before your next high-effort workout based on your latest training as well as overall stress, sleep and daily activities outside of workouts.

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PACEPRO™ FEATURE

To help you plan your race day strategy, this feature offers GPS-based pace guidance for a selected course or distance, so you can tailor your efforts to what’s ahead.

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TRAINING STATUS

Using new indicators such as HRV status, your recent exercise history and performance, get an easy insight into your overall effort — and whether you’re training productively, peaking or strained.

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ACUTE LOAD

See your training history, and compare the intensity of your recent workouts to the optimal range to help improve your fitness.

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TRAINING EFFECT

See how your workouts influence your endurance, speed and power with aerobic and anaerobic training effect feedback.

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PERFORMANCE CONDITION

While you run, get an analysis of your pace and heart rate for a real-time assessment of your current ability to perform.

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RUNNING DYNAMICS

When using a Running Dynamics Pod or HRM-Pro monitor, the Forerunner 255S Music 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.

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COURSES

Create or find existing courses in the Garmin Connect app, so you’ll never run out of places to run. Or plan one on other platforms such as Strava and Komoot, then automatically sync them to your Forerunner.

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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.

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CROSS-TRAINING

Mix up your training with different types of workouts. Free HIIT, strength, cardio, yoga and Pilates workouts come preloaded on the watch, and you can download more from the Garmin Connect app.

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WRIST-BASED HEART RATE

The watch constantly samples your heart rate2 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.

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BODY BATTERY™ ENERGY MONITORING

Track your body’s energy levels so you can find the best times for activity and rest2.

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SLEEP SCORE AND ADVANCED SLEEP MONITORING

Get a score for your sleep’s quality and insights on how you can do better. Even keep track of the different sleep stages as well as heart rate, stress, Pulse Ox3 and respiration.

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INTENSITY MINUTES

See when during the day you earned intensity minutes from moderate and vigorous physical activity.

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WOMEN’S HEALTH TRACKING

Use the Garmin Connect app to track your menstrual cycle or pregnancy. Log symptoms, get exercise and nutrition education, and more. Even see and log details on your wrist with the Women’s Health Tracking app.

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PULSE OX SENSOR

This wrist-based pulse ox sensor3 monitors blood oxygen saturation levels to support advanced sleep monitoring and altitude acclimation.

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STRESS TRACKING

Find out if you’re having a calm, balanced or stressful day. Relax reminders will even prompt you to do a short breathing activity when the watch detects that you’re feeling stressed.

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HEALTH SNAPSHOT™ FEATURE

Log a 2-minute session to record key stats, including heart rate2, heart rate variability, Pulse Ox3, respiration and stress. Then generate a report with those stats to share via the Garmin Connect app on your compatible smartphone.

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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.

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GARMIN CONNECT APP

See your health and fitness information, connect and compete with friends, sign up for challenges to earn badges and more — all in one free, zero-subscription app.

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GARMIN PAY CONTACTLESS PAYMENTS

Breeze through checkout lines with Garmin Pay contactless payments1 through participating providers.

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SMART NOTIFICATIONS

Receive emails, texts and alerts right on your watch when paired with your Apple® or Android™ smartphone. You can even respond to texts if you have an Android phone.

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SAFETY AND TRACKING FEATURES

If you feel unsafe or if your watch senses that an incident occurred, assistance and incident detection features3 can send a message with your location to emergency contacts.

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LIVETRACK FEATURE

Use LiveTrack to let friends and family follow your real-time location4 and even view your entire pre-planned course. Rest assured that your loved ones know exactly where you’re running.

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CONNECT IQ™ STORE

Download custom watch faces, add data fields, and get apps and widgets from the Connect IQ Store app downloaded on your compatible smartphone.

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This is not a medical device and is not intended for use in the diagnosis or monitoring of any medical condition; see Garmin.com/ataccuracy. Pulse Ox not available in all countries.
When paired with your compatible smartphone. For safety and tracking feature requirements and limitations, see Garmin.com/safety.
SPOTIFY and the Spotify logo are among the registered trademarks of Spotify AB. Amazon Music and all related logos are trademarks of Amazon.com, Inc. or its affiliates. Apple® is a trademark of Apple Inc., registered in the U.S. and other countries. Android is a trademark of Google LLC.
FirstBeat Analytics

Additional information

Color

Powder Grey, Light pink

specs

General
LENS MATERIAL Corning® Gorilla® Glass 3
BEZEL MATERIAL Fibre-reinforced polymer
QUICK RELEASE BANDS Yes (18 mm, Industry standard)
STRAP MATERIAL Silicone
PHYSICAL SIZE 41 x 41 x 12.4 (mm)
Fits wrists with a circumference of 110-175 mm
COLOUR DISPLAY Yes
DISPLAY SIZE 1.1″ (27.5mm) Diameter
DISPLAY RESOLUTION 218 x 218 pixels
DISPLAY TYPE Sunlight-visible, transflective memory-in-pixel (MIP)
WEIGHT 39 g
BATTERY LIFE Smartwatch mode: Up to 12 days
GPS-only GNSS mode: Up to 26 hours
All-Systems GNSS mode: Up to 20 hours
All-Systems GNSS mode plus Multi-Band: Up to 13 hours
WATER RATING 5 ATM
MEMORY/HISTORY Bluetooth®, ANT+®
Clock features
TIME/DATE Yes
GPS TIME SYNC Yes
AUTOMATIC DAYLIGHT SAVING TIME Yes
ALARM CLOCK Yes
TIMER Yes
STOPWATCH Yes
SUNRISE/SUNSET TIMES Yes
Health monitoring
WRIST-BASED HEART RATE (CONSTANT, EVERY SECOND) Yes
DAILY RESTING HEART RATE Yes
ABNORMAL HEART RATE ALERTS Yes (high and low)
RESPIRATION RATE (24X7) Yes
PULSE OX BLOOD OXYGEN SATURATION Yes (spot-check, and optional all-day acclimation and in sleep)
FITNESS AGE Yes
BODY BATTERY™ ENERGY MONITOR Yes
ALL-DAY STRESS TRACKING Yes
RELAXATION BREATHING TIMER Yes
SLEEP Yes (Advanced)
SLEEP SCORE AND INSIGHTS Yes
HYDRATION Yes (in Garmin Connect™ and optional Connect IQ™ widget)
WOMEN’S HEALTH Yes (in Garmin Connect™ and optional Connect IQ™ widget)
HEALTH SNAPSHOT Yes
Sensors
GPS Yes
GLONASS Yes
GALILEO Yes
MULTI-FREQUENCY POSITIONING Yes
GARMIN ELEVATE WRIST HEART RATE MONITOR Yes
BAROMETRIC ALTIMETER Yes
COMPASS Yes
GYROSCOPE Yes
ACCELEROMETER Yes
THERMOMETER Yes
PULSE OX BLOOD OXYGEN SATURATION MONITOR Yes
Daily smart features
CONNECTIVITY Bluetooth®, ANT+®
CONNECT IQ (DOWNLOADABLE WATCH FACES, DATA FIELDS, WIDGETS AND APPS) Yes
ON-DEVICE CONNECT IQ™ STORE Yes
SMART NOTIFICATIONS Yes
TEXT RESPONSE/REJECT PHONE CALL WITH TEXT (ANDROID™ ONLY) Yes
CALENDAR Yes
WEATHER Yes
REALTIME SETTINGS SYNC WITH GARMIN CONNECT™ MOBILE Yes
BATTERY SAVER – CUSTOMISABLE LOW POWER WATCH Yes
CONTROLS SMARTPHONE MUSIC Yes
FIND MY PHONE Yes
FIND MY WATCH Yes
VIRB® CAMERA REMOTE Yes
SMARTPHONE COMPATIBILITY iPhone® and Android™
COMPATIBLE WITH GARMIN CONNECT MOBILE Yes
GARMIN PAY™ Yes
Safety and tracking features
LIVETRACK Yes
LIVE EVENT SHARING Android™ Only
INCIDENT DETECTION DURING SELECT ACTIVITIES Yes
ASSISTANCE Yes
Activity tracking features
STEP COUNTER Yes
MOVE BAR (DISPLAYS ON DEVICE AFTER A PERIOD OF INACTIVITY; WALK FOR A COUPLE OF MINUTES TO RESET IT) Yes
AUTO GOAL (LEARNS YOUR ACTIVITY LEVEL AND ASSIGNS A DAILY STEP GOAL) Yes
CALORIES BURNED Yes
FLOORS CLIMBED Yes
DISTANCE TRAVELLED Yes
INTENSITY MINUTES Yes
TRUEUP™ Yes
MOVE IQ™ Yes
GARMIN CONNECT™ CHALLENGES APP Yes (optional Connect IQ app)
Fitness equipment/gym
AVAILABLE GYM ACTIVITY PROFILES Strength, HIIT, Cardio and Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Pilates, Yoga
CARDIO WORKOUTS Yes
STRENGTH WORKOUTS Yes
HIIT WORKOUTS Yes
YOGA WORKOUTS Yes
PILATES WORKOUTS Yes
ON-SCREEN WORKOUT ANIMATIONS Yes
ON-SCREEN WORKOUT MUSCLE MAPS Yes
AUTOMATIC REP COUNTING Yes
Training, planning and analysis features
HR ZONES Yes
HR ALERTS Yes
HR CALORIES Yes
% HR MAX Yes
% HRR Yes
RECOVERY TIME Yes
AUTO MAX HR Yes
MORNING REPORT Yes
RACE GLANCE/WIDGET Yes
HRV STATUS Yes
HR BROADCAST (BROADCASTS HR DATA OVER ANT+ TO PAIRED DEVICES) Yes
RESPIRATION RATE (DURING EXERCISE) Yes (with compatible accessory)
GPS SPEED AND DISTANCE Yes
CUSTOMISABLE SCREEN(S) Yes
CUSTOMISABLE ACTIVITY PROFILES Yes
AUTO PAUSE® Yes
INTERVAL TRAINING Yes
IMPROVED INTERVAL (INCLUDES OPEN REPEATS, INTERVALS DATA PAGE, REST SCREEN AND AUTO DETECTION) Yes
ADVANCED WORKOUTS Yes
DOWNLOADABLE TRAINING PLANS Yes
AUTO LAP® Yes
MANUAL LAP Yes
REST TIMER Yes
CONFIGURABLE LAP ALERTS Yes
VO2 MAX (RUN) Yes
VO2 MAX (TRAIL RUN) Yes
TRAINING STATUS (LETS YOU SEE IF YOU’RE TRAINING EFFECTIVELY BY TRACKING YOUR TRAINING HISTORY AND FITNESS LEVEL TREND) improved
TRAINING LOAD (YOUR TOTAL TRAINING LOAD FOR THE LAST 7 DAYS CALCULATED FROM ESTIMATED EPOC) Yes
TRAINING LOAD FOCUS Yes
TRAINING EFFECT (AEROBIC) Yes
TRAINING EFFECT (ANAEROBIC) Yes
PRIMARY BENEFIT (TRAINING EFFECT LABELS) Yes
IMPROVED RECOVERY TIME Yes
DAILY SUGGESTED WORKOUTS yes (7 days)
CUSTOMISABLE ALERTS Yes
AUDIO PROMPTS Yes
FINISH TIME Yes
VIRTUAL PARTNER Yes
RACE AN ACTIVITY Yes
AUTO MULTISPORT ACTIVITIES Yes
MULTI-SPORT Yes
COURSE GUIDANCE Yes
TOUCH AND/OR BUTTON LOCK Yes
AUTO SCROLL Yes
ACTIVITY HISTORY ON WATCH Yes
PHYSIO TRUEUP Yes
Running features
AVAILABLE RUN PROFILES Running, Outdoor Track Running, Treadmill Running, Indoor Track Running, Trail Running, Virtual Running, Ultra Running
GPS-BASED DISTANCE, TIME AND PACE Yes
RUNNING DYNAMICS Yes (with compatible accessory)
VERTICAL OSCILLATION AND RATIO Yes (with compatible accessory)
GROUND CONTACT TIME AND BALANCE Yes (with compatible accessory)
STRIDE LENGTH (REAL TIME) Yes (with compatible accessory)
CADENCE (PROVIDES REAL-TIME NUMBER OF STEPS PER MINUTE) Yes
RUNNING POWER Yes (with compatible accessory)
PERFORMANCE CONDITION Yes
LACTATE THRESHOLD Yes (with compatible accessory)
PACEPRO™ PACING STRATEGIES Yes
RUN WORKOUTS Yes
RACE PREDICTOR Yes
COURSE- AND WEATHER-SPECIFIC RACE PREDICTOR Yes
FOOT POD CAPABLE Yes
Outdoor recreation
AVAILABLE OUTDOOR RECREATION PROFILES Hiking, Skiing, Snowboarding, XC Classic Skiing, Stand Up Paddleboarding, Rowing
POINT-TO-POINT NAVIGATION Yes
BREADCRUMB TRAIL IN REAL TIME Yes
BACK TO START Yes
TRACBACK® Yes
ULTRATRAC MODE Yes
UP AHEAD Yes
ELEVATION PROFILE Yes
DISTANCE TO DESTINATION Yes
BAROMETRIC TREND INDICATOR WITH STORM ALERT Yes
TRAIL RUN AUTO CLIMB Yes
VERTICAL SPEED Yes
TOTAL ASCENT/DESCENT Yes
FUTURE ELEVATION PLOT Yes
PROJECTED WAYPOINT Yes
SUN AND MOON INFORMATION Yes
Cycling features
AVAILABLE CYCLING PROFILES Biking, Indoor Biking, Mountain Biking, eBiking, eMountain Biking
ALERTS (TRIGGERS ALARM WHEN YOU REACH GOALS INCLUDING TIME, DISTANCE, HEART RATE OR CALORIES) Yes
COURSES Yes
BIKE LAP AND LAP MAXIMUM POWER (WITH POWER SENSOR) Yes
RACE AN ACTIVITY Yes
FTP (FUNCTIONAL THRESHOLD POWER) Yes (with compatible accessory)
COMPATIBLE WITH VECTOR™ AND RALLY™ (POWER METERS) Yes
POWER METER COMPATIBLE Yes
COMPATIBLE WITH VARIA VISION™ (HEAD-MOUNTED DISPLAY) Yes
COMPATIBLE WITH VARIA™ RADAR (REAR-FACING RADAR) Yes
COMPATIBLE WITH VARIA™ LIGHTS Yes
SPEED AND CADENCE SENSOR SUPPORT (W/SENSOR) Yes
Swimming features
AVAILABLE SWIM PROFILES Pool swimming, open water swimming
OPEN-WATER SWIM METRICS (DISTANCE, PACE, STROKE COUNT/RATE, STROKE DISTANCE, SWIM EFFICIENCY (SWOLF), CALORIES) Yes
POOL SWIM METRICS (LENGTHS, DISTANCE, PACE, STROKE COUNT, SWIM EFFICIENCY (SWOLF), CALORIES) Yes
STROKE TYPE DETECTION (FREESTYLE, BACKSTROKE, BREASTSTROKE, BUTTERFLY) (POOL SWIM ONLY) Yes
DRILL LOGGING (POOL SWIM ONLY) Yes
BASIC REST TIMER (UP FROM 0) (POOL SWIM ONLY) Yes
“REPEAT ON” REST TIMER (POOL SWIM ONLY) Yes
AUTO REST (POOL SWIM ONLY) Yes
TIME AND DISTANCE ALERTS Yes

PACING ALERTS (POOL SWIM ONLY)

Yes
COUNTDOWN START Yes
POOL SWIM WORKOUTS Yes
CRITICAL SWIM SPEED Yes
UNDERWATER WRIST-BASED HEART RATE Yes
HEART RATE FROM EXTERNAL HRM (REAL-TIME DURING RESTS, INTERVAL AND SESSION STATS DURING RESTS, AND AUTOMATIC HEART RATE DOWNLOAD POST-SWIM) yes (with HRM-Swim™ or HRM-Pro™)
Kid activity tracking features
TOE-TO-TOE™ CHALLENGES APP Yes (optional Connect IQ Toe-to-Toe™ Challenges app)
Connectivity
SMART TRAINER CONTROL Yes

In The Box

  • Forerunner 255S
  • Charge/data cable
  • Documentation

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