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Forerunner 255

4.566473988439307 out of 5 stars
173 Reviews
Color:Tidal Blue


Size Chart


Why We Like The Garmin Forerunner 255

The Garmin Forerunner 255 gives us all the data we need to get the most out of every training cycle and rest day. The lightweight sport watch tracks our health with a short and long-term focus so we know when to push ourselves and when to lay low so we have ample time to recover. The 14-day battery in smartwatch mode, and 30 hour battery in GPS mode, give us plenty of power to get through our day without needing to stop and recharge. The slew of functional features, like GPS, contactless payments, smart notifications, and compatibility with apps from the Connect IQ Store, ensure that even when we're not working out, the Forerunner 255 remains on our wrist.


  • Intelligent sport watch for getting the most out of the daily grind
  • 46mm face with scratch-and damage-resistant coating
  • Up to 14 days of battery life while in smartwatch mode
  • Lightweight construction is designed to be comfortable for days of wear
  • Built in sensors reliably track our heart rate and blood oxygen
  • Suggested workouts and training plans help us reach our goals
  • 5 ATM rating is submersible in water to a depth of 50 meters
  • Multi-band GNSS and SatIQ technology provide accurate location
  • Item #GRMF03L
Housing Material
fiber-reinforced polymer
Strap Material
Face Material
Corning Gorilla Glass 3
barometric altimeter
barometric altimeter
Heart Rate Monitor
wrist-based, constant
Technical Features
see size chart
Bluetooth, ANT+, Garmin Connect
Date Indicator
Weekday Indicator
alarm clock
Battery Type
lithium ion
Battery Life
[smartwatch mode] 14 days, [GPS-only GNSS mode] 30 hours, [all-systems GNSS mode] 25 hours, [all-systems GNSS plus Multi-Band] 16 hours
Claimed Weight
1.7oz (49g)
Face Size
[diameter] 1.3in, 33mm
Manufacturer Warranty
1 year
road running, trail running, training, triathlon, swimming, backcountry skiing, cycling

Overall Rating

4.5 based on 174 ratings

Review Summary

1 Stars - 4 reviews
2 Stars - 5 reviews
3 Stars - 9 reviews
4 Stars - 26 reviews
5 Stars - 130 reviews

What do you think about this product?


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5 out of 5 stars

December 5, 2023

Watchy Watch

Tis the watchiest of watches. Watches like no other watch ive ever watched watch. I would suggest this watch to anyone who also finds use in watching watches watch. Watch!


Originally reviewed on Garmin

3 out of 5 stars

December 3, 2023

comfortable, but less than I hoped for

Comfortable to wear and works OK. However, the watch faces that it comes with are really poor. I had to download 3 or 4 new watch faces before I could find one that was sort of acceptable. Also, running every other day the battery only last five or six days. If you ran every day you might have to recharge it every two or three days


Originally reviewed on Garmin

5 out of 5 stars

December 2, 2023

Great Watch

I upgraded from my Forerunner 645 and it’s been a great experience with the 255


Originally reviewed on Garmin

5 out of 5 stars

December 1, 2023

Perfect Run Companion

I'm 3 weeks into daily wear of my FR255 and it has been great. My primary needs out of a watch are pace, distance, and elevation to assist with marathon training, and this watch does great for these metrics. I also powerlift but haven't used this watch to try tracking anything in the gym, only running. It's capable of far more than my current use demands of it. I have found the Body Battery data to be pretty useful as well. I had no need for the latest and greatest AMOLED displays and such, so the FR255 turned out to be precisely the watch for me. If you're after a simple yet feature-rich watch, regardless your sport, this is a solid choice.


Originally reviewed on Garmin

5 out of 5 stars

December 1, 2023

Another excellent Garmin product

I bought the Forerunner 255 as an upgrade from my Forerunner 45. The 255 exceeds all my expectations. Thank you Garmin!


Originally reviewed on Garmin

4 out of 5 stars

November 30, 2023

More complicated than needed

I bought and started using 20 days ago and have struggled with the use and understanding of the features. Good accuracy of heart rate—-working on learning the applications.

Milt 66

Originally reviewed on Garmin

5 out of 5 stars

November 28, 2023

46mm display

I've owned several Garmins, over the years, starting with the 201 Forerunner. This is by far the best GPS I've owned. I bought it because of the 46 mm display and didn't think I needed all the features that this watch has but they motivate you to run more and improve. I thought you needed an extra pod for the running dymanics but software was updated. Weekly mileage, VO2 are displayed, O2 displayed or on demand, Vertical Oscillation, ground contact time, power zones and a lot more for those who take running seriously!

Originally reviewed on Garmin

5 out of 5 stars

November 27, 2023

Great Watch and Features

I bought this to replace a 245, and it works great.


Originally reviewed on Garmin

5 out of 5 stars

November 19, 2023

Great accuracy

My wife bought this for me as a 50th birthday gift. I’ve run 5K’s & a half marathon since receiving it, and it has been super accurate. The data it provides after a run is more detailed than an Apple Watch.


Originally reviewed on Garmin

4 out of 5 stars

November 16, 2023

Overall sports wise better than my other watch

For someone new to Garmin it was a little difficult to navigate the features. Wish more tweaks could be done from the app. Very comfortable on the wrist which I think helps with accuracy of body metrics. The app platform and watch fit my interests of running, hiking, gym work. Don't think I'll be returning to my previous product.

no one

Originally reviewed on Garmin