About Garmin Forerunner 255S
The Garmin Forerunner 255S is designed for athletes who want to elevate their training with advanced performance metrics and personalized recovery insights. Offering up to 12 days of battery life in smartwatch mode and 26 hours in GPS mode, this watch is built to keep up with your toughest workouts. With 30+ sports profiles, daily suggested workouts, and triathlon support, it adapts to your goals while tracking every aspect of your fitness. Whether you’re running, cycling, or swimming, the Forerunner 255S delivers the tools you need to achieve your personal best.
Achieve Your Best Running Performance
You’re committed to reaching new milestones, and the Garmin Forerunner 255S gives you the training and recovery insights you need to improve your performance and achieve your best time yet.
- Morning Report provides an overview of your sleep, HRV status, recovery, and workout outlook every morning.
- Stay powered through long workouts with up to 12 days of battery life in smartwatch mode and 26 hours in GPS mode.
- Push your limits with built-in triathlon features and 30+ activity profiles, including multi-sport and open-water swimming.
- Plan your race day with the Race Widget, which displays race details and daily suggested workouts based on your progress.
- Utilize advanced metrics and training tools to fine-tune your workouts and track your performance improvements.
- Pay for your post-run snack with Garmin Pay™ contactless payments.
Lightweight, Comfortable, and Ready to Train
With its sleek design, the Forerunner 255S is so lightweight you’ll almost forget you're wearing it. Built for all-day comfort, this watch keeps you focused on your performance, not your gear.
- Weighs only 1.4 oz for a barely-there feel, even when sleeping.
- Designed with sweat-ready materials, including durable Corning® Gorilla® Glass 3 and a silicone band.
Comprehensive Insights to Boost Your Recovery
Get a clear picture of how your body is recovering with insights into your sleep and stress levels. The Forerunner 255S provides you with everything you need to optimize your training and recovery.
- HRV Status gives you a deeper understanding of your recovery and training performance using heart rate variability during sleep.
- Recovery Time estimates how long to rest before your next high-effort workout, factoring in your daily stress and sleep.
Track and Improve with a Full Suite of Sports Apps
Whether you’re a runner, cyclist, or triathlete, the Forerunner 255S provides built-in apps for over 30 sports and multisport profiles to help you track every part of your training.
- Over 30 built-in activity profiles including triathlon, open-water swimming, and more.
- Switch seamlessly between activities with a single button press during brick workouts and races.
- Utilize Garmin Coach for personalized training plans for running, cycling, and strength training.
Optimize Every Stride with Advanced Running Metrics
Fine-tune your running performance with advanced metrics that help you manage effort, pace, and form during every run.
- Wrist-based Running Dynamics measures crucial running metrics like cadence, stride length, and ground contact time.
- Wrist-based Running Power helps you manage your effort during runs, ensuring optimal pacing.
- PacePro™ provides GPS-based pace guidance to help you stick to your race-day strategy, adjusting for terrain.
Comprehensive Training Insights for Peak Performance
Achieve your fitness goals faster with real-time data and insights that help you optimize your workouts and performance.
- Training Status provides real-time feedback on your training progress, indicating whether you’re training productively or overreaching.
- Acute Load compares your workout intensity to the optimal range, helping you avoid burnout and improve fitness.
- Training Effect provides feedback on the impact of your workouts on your endurance, speed, and power.
- Performance Condition offers a real-time analysis of your pace and heart rate, helping you assess your readiness for a run.
Track Every Course and Race Strategy
With the Forerunner 255S, you can track your running routes, analyze your performance, and predict race day outcomes with smart tools that help you stay ahead.
- Courses feature allows you to create or sync custom routes and follow turn-by-turn directions during your runs.
- Track Running records accurate lap distances even on new tracks using a global database of over 10,000 tracks.
- Visual Race Predictor estimates your pace for races ranging from 5K to marathon, helping you manage your training accordingly.
Cross-Train and Customize Your Workouts
The Forerunner 255S is your all-in-one fitness companion, offering cross-training features to help you mix up your workouts and stay motivated.
- Download free HIIT, strength, cardio, yoga, and Pilates workouts to your watch from the Garmin Connect app.
- Adaptive coaching for cycling provides daily suggested workouts that align with your fitness goals and upcoming events.
Deep Wellness Insights for a Healthier You
Track your overall health with powerful wellness tools that monitor heart rate, energy, sleep, and stress—keeping you at your best every day.
- Wrist-based heart rate monitoring keeps tabs on your heart rate throughout the day, with alerts for abnormal levels.
- Body Battery™ Energy Monitoring lets you track energy levels, helping you find the best time to train or rest.
- Sleep Coach offers personalized sleep insights, helping you improve your sleep quality and recovery.
- Pulse Ox Sensor monitors blood oxygen levels for advanced sleep tracking and altitude acclimation.
- Women’s Health Tracking provides personalized insights on menstrual cycles and pregnancy for holistic wellness tracking.
- Intensity Minutes feature helps you understand when you’ve earned vigorous activity during your day.
- Stress Tracking alerts you to high-stress levels and offers reminders to relax and breathe.
Stay Connected and Safe Wherever You Are
The Forerunner 255S keeps you connected with smart features that help you stay safe, informed, and on top of your fitness goals.
- SatIQ™ Technology provides superior positioning accuracy with multi-band GNSS, optimizing battery life while ensuring precise tracking.
- Garmin Pay allows for contactless payments at participating providers, so you can grab a drink or snack post-workout without your wallet.
- Smart Notifications keep you connected with email, text, and alerts directly on your wrist when paired with your smartphone.
- Safety and Tracking features send your live location to emergency contacts in case of an incident during select activities.
- LiveTrack lets your friends and family follow your real-time location and route, ensuring peace of mind during outdoor activities.
