About this watch
Condition
Refurbished
Warranty
365-Day Warranty
Strap
Brand new replacement strap supplied
Strap colour and style may vary from images shown.
The Garmin Forerunner 255S is an advanced GPS running watch designed for runners who want deeper performance insights, multi-band tracking support, and broader training tools in a smaller, lighter case size.
Positioned as a more capable training watch in Garmin’s Forerunner range, the 255S offers advanced training metrics, performance monitoring, multisport support, strong GPS accuracy, and everyday usability, making it ideal for structured training, longer-distance running, and users who prefer a more compact watch on the wrist.
The smaller 255S case is especially suited to smaller wrists or anyone who wants the performance features of the Forerunner 255 in a lighter design.
Each watch is fully tested, including battery performance during GPS activity, to ensure it functions as expected for its intended use.
Ideal for
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Runners following structured training plans
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5K, 10K, half-marathon, and marathon training
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Short to long GPS activities
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Users wanting detailed performance insights without needing on-watch music
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Buyers who prefer a smaller and lighter Forerunner watch
Key features
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Smaller 255S case size for a lighter feel on the wrist
✓
Built-in GPS for pace, distance, and route tracking
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Multi-band GNSS support for improved tracking accuracy
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Advanced training metrics and recovery insights
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VO2 max estimation, race widget, and training status feedback
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Running, cycling, swimming, and multisport activity tracking
✓
Wrist-based heart-rate monitoring
✓
Smart notifications and safety tracking features
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Water-resistant to 5 ATM
Want to compare before you buy?
The Garmin Forerunner 255S is a great choice for runners who want advanced training tools, strong GPS performance, and a smaller case size, but you may also want to compare it with other Forerunner models such as the 245, 255, 255S Music, or 265.
View our full range of refurbished Garmin Forerunner watches to find the model that best suits your training, budget, wrist size, and feature preferences.
Shop and Compare Forerunner Models
Battery performance
Battery performance is assessed using a standard GPS activity test. The GPS Activity Duration option shows what type of GPS activities this specific watch is best suited for on a single charge.
Note: GPS activity duration refers to active GPS tracking only. Normal smartwatch use, including time display, notifications, health tracking, and step tracking, lasts much longer between charges.
