Garmin Forerunner 255S Running Watch (Powder Gray)

You’re making strides. Now, let’s take the next step. Get the training and recovery insights through Garmin Forerunner 255S Running Watch you’ll need to notch your best time yet.

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.

As Light As a Feather

With its sleek design and 1.4 oz 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.

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.

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.

Race Widget

Get ready for your next race with training tips, personalized daily suggested workouts, and completion time predictions 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 and recovery 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 that adapt to you and your goals.

Triathlon and Multisport Profiles

Switch between sports with one press by using built-in profiles for triathlons, duathlons, brick workouts, and swim runs. Or, create your own custom multisport profiles.

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.

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.

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.

Training Status

Using new indicators such as HRV status, your recent exercise history, and performance, get easy insight into your overall 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 improve your 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 to perform.

Running Dynamics

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