Garmin Forerunner 255
You’re making strides. Now, let’s take the next step. Get the training and recovery insights you’ll need to notchyour best time yet.
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 payments1.
Garmin Forerunner 255 Specs
- LENS MATERIAL: Corning® Gorilla® Glass 3
- BEZEL MATERIAL: fiber-reinforced polymer
- STRAP MATERIAL: silicone
- 46mm PHYSICAL SIZE: 45.6 x 45.6 x 12.9 (mm), Fits wrists with a circumference of 130-205 mm
- 41mm PHYSICAL SIZE: 41 x 41 x 12.4 (mm), Fits wrists with a circumference of 110-175 mm
- 46mm DISPLAY SIZE: 1.3″ (33 mm) diameter
- 41mm DISPLAY SIZE: 1.1″ (27.5mm) Diameter
- DISPLAY TYPE: sunlight-visible, transflective memory-in-pixel (MIP)
- WEIGHT: 39-49 g
- BATTERY LIFE: Smartwatch mode: Up to 14 days. GPS-Only GNSS mode: Up to 30 hours. All-SystemsGNSS mode: Up to 25 hours. All-Systems GNSS mode plus Multi-Band: Up to 16 hours
- MUSIC MODEL BATTERY LIFE: Smartwatch mode: Up to 14 days. GPS-only GNSS mode: Up to 30 hours.All-Systems GNSS mode with music: Up to 6.5 hours. All-Systems GNSS mode: Up to 25 hours. All-Systems GNSS modeplus Multi-Band:Up to 16 hours
- MEMORY/HISTORY: 4 GB
- WATER RATING: 5 ATM
Garmin Forerunner 255 Features
READY FOR THE LONG RUN
Get an uninterrupted picture of your daily health and nightly sleep with up to 14 days of battery life in smartwatchmode and up to 30 hours in GPS mode.
(ALMOST) AS LIGHT AS A FEATHER
With its sleek design and 1.7 oz weight, you’ll almost forget you’re wearing Forerunner 255 Music — even when you’reasleep.
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.
MORNING REPORT
Receive an overview of your sleep, recovery and training outlook as soon as you wake up — alongside HRV status andweather. You can even customize your report to show you what you want to see.
HRV STATUS
Gain a deeper understanding of your overall health, recovery and training performance through heart rate variabilitywhile 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 Forerunner255 series. For races and brick workouts, transition to the next activity with a single button press.
RACE WIDGET
Get ready for your next race with training tips, personalized daily suggested workouts and completion timepredictions based on course details, weather and performance.
DAILY SUGGESTED WORKOUTS
View your entire week of daily suggested workouts, which adapt after every run to match your performance andrecovery as well as the races coming up in your Garmin Connect™ smartphone app calendar.
GARMIN COACH
Free adaptive training plans include 5K, 10K and half-marathon programs, featuring guidance from expert coaches thatadapt to you and your goals.
RUNNING POWER
When using a Running Dynamics Pod or HRM-Pro™ monitor, get a continuous measurement on your wrist of how much poweryou’re applying to the road as you run, so you can manage your effort.
RECOVERY TIME
Know how long to recover before your next high-effort workout based on your latest training as well as overallstress, sleep and daily activities outside of workouts.
PACEPRO™ FEATURE
To help you plan your race day strategy, this feature offers GPS-based pace guidance for a selected course ordistance, so you can tailor your efforts to what’s ahead.
TRAINING STATUS
Using new indicators such as HRV status, your recent exercise history and performance, get an easy insight into youroverall effort — and whether you’re training productively, peaking or strained.
ACUTE LOAD
See your training history, and compare the intensity of your recent workouts to the optimal range to help improveyour fitness.
TRAINING EFFECT
See how your workouts influence your endurance, speed and power with aerobic and anaerobic training effect feedback.
PERFORMANCE CONDITION
While you run, get an analysis of your pace and heart rate for a real-time assessment of your current ability toperform.
RUNNING DYNAMICS
When using a Running Dynamics Pod or HRM-Pro monitor, the Forerunner 255 Music watch measures crucial runningmetrics such as cadence, stride length, ground contact time and balance, and more — while comparing to others in theGarmin Connect app.
COURSES
Create or find existing courses in the Garmin Connect app, so you’ll never run out of places to run. Or plan one onother platforms such as Strava and Komoot, then automatically sync them to your Forerunner.
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.
CROSS-TRAINING
Mix up your training with different types of workouts. Free HIIT, strength, cardio, yoga and Pilates workouts comepreloaded on the watch, and you can download more from the Garmin Connect app.
WRIST-BASED HEART RATE
The watch constantly samples your heart rate with our latest-generation heart rate sensor and will alert you if itstays too high or too low while you’re at rest. It also helps gauge how hard you work during activities — even whileswimming.
BODY BATTERY™ ENERGY MONITORING
Track your body’s energy levels so you can find the best times for activity and rest.
IMPROVED SLEEP MONITORING AND SLEEP SCORE
Understand how your body is recovering — and get ready for training — with our improved sleep monitoring feature.After waking up, you’ll receive a sleep score, as well as breakdown of your sleep stages, Pulse Ox and respiration,alongside detailed insights for improved sleep quality.
PULSE OX SENSOR
This wrist-based Pulse Ox sensor monitors blood oxygen saturation levels to support advanced sleep monitoring andaltitude acclimation.
WOMEN’S HEALTH TRACKING
Use the Garmin Connect app to track your menstrual cycle or pregnancy. Log symptoms, get exercise and nutritioneducation, and more. Even see and log details on your wrist with the Women’s Health Tracking app.
INTENSITY MINUTES
Our intensity minutes feature tells you when during the day you earned them and during what activity.
STRESS TRACKING
Find out if you’re having a calm, balanced or stressful day. Relax reminders will even prompt you to do a shortbreathing activity when the watch detects that you’re feeling stressed.
HEALTH SNAPSHOT™ FEATURE
og a 2-minute session to record key stats, including heart rate, heart rate variability, Pulse Ox, respiration andstress. Then generate a report with those stats to share via the Garmin Connect app on your compatible smartphone.
MULTI-BAND GNSS SUPPORT
Access multiple global navigation satellite systems, and get access to multiple frequencies sent by navigationsatellites 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.
MUSIC ON YOUR WRIST
Download up to 500 songs plus playlists from your Spotify, Deezer or Amazon Music accounts (subscription required).
GARMIN PAY CONTACTLESS PAYMENTS
Breeze through checkout lines with Garmin Pay contactless payments1 through participating providers.
SMART NOTIFICATIONS
Receive emails, texts and alerts right on your watch when paired with your Apple® or Android™ smartphone. You caneven respond to texts if you have an Android phone.
SAFETY AND TRACKING FEATURES
If you feel unsafe or if your watch senses that an incident occurred, the Assistance and incident detection featuressend your location to emergency contacts. Incident detection is enabled by default for select activity profilesonly.
LIVETRACK FEATURE
Use LiveTrack to let friends and family follow your real-time location and even view your entire preplanned course.Rest assured that your loved ones know exactly where you’re running.
GARMIN CONNECT APP
See your health and fitness information, connect and compete with friends, sign up for challenges to earn badges andmore — all in one free, zero-subscription app.
CONNECT IQ™ STORE
Download custom watch faces, add data fields, and get apps and widgets from the Connect IQ Store app downloaded onyour compatible smartphone.
