Price not shownPrice checked 5 Sept 2026 — too old to show. Check on Amazon.View on Amazon UK(opens in a new tab)
Garmin
Garmin Forerunner 255, 46mm GPS running smartwatch, lightweight, advanced training & insights, safety & tracking features, up to 14 days battery life, Slate Grey
Garmin's Garmin Forerunner 255, 46mm GPS running smartwatch, lightweight, advanced training & insights, safety & tracking features, up to 14 days battery life, Slate Grey is available on Amazon UK. Key specs: Colour: Slate Grey, Pack size: 1, Weight: 0.10802650838 Pounds.
The Garmin Forerunner 255 is a lightweight Slate Grey running smartwatch with advanced training features and up to 14 days of battery life. Despite being packed with functionality for serious runners, it’s surprisingly compact at just under half an inch thick. Perfect for those who need every detail tracked without the extra bulk.
184.99 poundsPrice checked 1 Nov 2026
Currently unavailable on Amazon UK
View on Amazon UK(opens in a new tab)
As an Amazon Associate we earn from qualifying purchases.
Specifications
| Colour | Slate Grey |
|---|---|
| Pack size | 1 |
| Weight | 0.10802650838 Pounds |
| Dimensions | 1.795272 x 1.795272 x 0.507873 Inches |
| Amazon Bestseller Rank | 8785 |
Browse related
Prices and availability are accurate as of the date shown and may change. Always check the current price on Amazon UK before buying.
Alternatives
Similar running watches
14.89 poundsPrice checked 1 Nov 2026View on Amazon UK(opens in a new tab)
15.89 poundsPrice checked 1 Nov 2026View on Amazon UK(opens in a new tab)
189.95 poundsPrice checked 1 Nov 2026View on Amazon UK(opens in a new tab)
Prices and availability are accurate as of the date shown and may change. Always check the current price on Amazon UK before buying.
As an Amazon Associate we earn from qualifying purchases.
Related guides
Buying advice for running watches
Frequently asked questions
How long does the Garmin Forerunner 255 battery last?
The Garmin Forerunner 255 offers up to 14 days of battery life.
What is the weight of the Garmin Forerunner 255, 46mm model?
The Garmin Forerunner 255 weighs in at 0.108 Pounds.
Does the Garmin Forerunner 255 come in Slate Grey?
Yes, the Garmin Forerunner 255 is available in Slate Grey.
What are the dimensions of the Garmin Forerunner 255 watch?
The Garmin Forerunner 255 measures 1.795 x 1.795 x 0.508 Inches.
How many features does this running watch have for training insights?
The Garmin Forerunner 255 provides advanced training and insights features.
Is the Garmin Forerunner 255 suitable for long-distance running?
The Garmin Forerunner 255 offers up to 14 days battery life, making it suitable for long-distance runs.
Can I use the GPS feature without a mobile phone nearby?
Yes, the Garmin Forerunner 255 has an integrated GPS that works independently of your phone.
What safety features are included with this watch?
The Garmin Forerunner 255 includes safety features such as emergency SOS and live tracking options.
How does the battery life compare to other running watches in its category?
With up to 14 days of battery life, the Garmin Forerunner 255 outperforms many other watches in this category.