Garmin Forerunner 255 46mm Smart Watch, Slate Grey | 010-02641-10

Get an uninterrupted picture of your daily health and nightly sleep with up to 14 days of battery life in smartwatch mode and up to 30 hours in GPS mode.

(ALMOST) AS LIGHT AS A FEATHER

With its sleek design and 49g weight, you'll almost forget you're wearing a Forerunner® 255 running smartwatch — 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 customise 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 running watch series. For races and brick workouts, transition to the next activity with a single button press.

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

Train for an event, achieve a milestone, or improve your fitness with Garmin Coach training plans for runners. Just set it up in the Garmin Connect™ app, then let Garmin  Coach create personalised daily workouts to help you reach your goals — from your first 5K to a full marathon. This includes Garmin Run Coach, which creates plans that adapt based on your performance, recovery and health metrics.

TRIATHLON AND MULTISPORT PROFILES

Switch between sports automatically by using built-in profiles for triathlons, duathlons, brick workouts and swimruns – so you can focus on the race and let your watch take care of recording splits. You can also create your own custom multisport profiles.

WRIST-BASED RUNNING DYNAMICS

This smartwatch measures crucial running metrics such as cadence, stride length, ground contact time and more.

WRIST-BASED RUNNING POWER

See how much power you’re applying to the trail or the road so you can manage your effort and fine-tune your training. No accessory required.

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.

GRADE-ADJUSTED PACE

Don’t run out of steam before the activity is over. After configuring your data fields in the running activity, understand how to adjust your pace over varying terrain to perform according to your plan.

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.

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.

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.

TRACK RUNNING

Record accurate lap distances and see your distances in metres – even on a track you’ve never run before with a database with more than 10,000 tracks (400 metres) from all over the world.

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. Download free HIIT, strength, cardio, yoga and Pilates workouts to your watch, from the Garmin Connect app.

TARGETED ADAPTIVE COACHING

View your entire week of daily suggested cycling workouts directly on your smartwatch — which adapt to match your performance and the demands of upcoming events in your Garmin Connect™ smartphone app calendar.