Key Features

Lightweight 41 mm Design
Triathlon & Training Metrics
Multi-Band GPS Precision
Long Battery Life (12 Days)

Best for:

Triathlon, Compact Fitness Tracking, Recovery Insights, Race Prep

Compact Power for Smaller Wrists

Just 41 mm across and weighing only 39 g, the Forerunner 255S fits smaller wrists without skimping on capability. Built with Gorilla Glass and a durable polymer case, it’s tough enough for daily wear and swim sessions.

Race Metrics & Performance Insights

Triathlon mode tracks transitions from swim to bike to run, and advanced stats like VO2 Max, ground contact time, and running power help fine-tune performance. With Garmin Coach and the Race Widget, you’re always race-day ready.

Smarter Everyday Tools

Garmin Pay, notifications, and customisable apps via Connect IQ keep your watch functional outside workouts. HRV status, Morning Reports, and stress tracking offer insight into how your body’s responding to training and rest.

Product Specifications:

Why Choose the Forerunner 255S

The Forerunner 255S offers the same advanced tools as its larger sibling in a slimmer build. It’s ideal for athletes who value comfort and fit, without losing performance tracking, smart features, or durability.

Additional Highlights

Morning Report & HRV Status: Wake up to daily readiness and recovery insights.
PacePro™ Guidance: Plan and manage race efforts with split-level pacing support.
VO2 Max & Running Dynamics: Optimise form and training load with pro-level metrics.
Long Battery Life: Up to 12 days in smartwatch mode, 26 hours in GPS.
Swim-Ready: 5 ATM water rating for pool or open-water tracking.
18 mm Quick-Release Strap: Swap styles easily for comfort or looks.

Product Specifications:

Why Choose the Forerunner 255S

The Forerunner 255S offers the same advanced tools as its larger sibling in a slimmer build. It’s ideal for athletes who value comfort and fit, without losing performance tracking, smart features, or durability.

Additional Highlights

Morning Report & HRV Status: Wake up to daily readiness and recovery insights.
PacePro™ Guidance: Plan and manage race efforts with split-level pacing support.
VO2 Max & Running Dynamics: Optimise form and training load with pro-level metrics.
Long Battery Life: Up to 12 days in smartwatch mode, 26 hours in GPS.
Swim-Ready: 5 ATM water rating for pool or open-water tracking.
18 mm Quick-Release Strap: Swap styles easily for comfort or looks.

Why You'll Love It

The Forerunner 255S offers the same advanced tools as its larger sibling in a slimmer build. It’s ideal for athletes who value comfort and fit, without losing performance tracking, smart features, or durability.