Garmin · 2015
Forerunner® 25Size, Dimensions & Wrist Fit
Case Width
35mm
Thickness
13.9mm
Lug-to-Lug
44mm
Weight
31g
The Garmin Forerunner® 25 sits best on flat wrist widths of about 46–63mm (≈ 12.3–16.8cm wrist circumference). Adjust the slider below to check your wrist.
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The Forerunner® 25 in short
The figures that decide whether this watch suits you, pulled out of the full specification sheet further down.
- Rated for 8 weeks of use per charge.
- 31g on the wrist. Lighter than 83% of the 35mm watches we have weights for.
- Small: 0.73” x 0.73” (18.5 x 18.5 mm) Large: 0.91” x 0.91” (23.0 x 23.0 mm) display.
- acrylic case, acrylic glass.
Does the Forerunner® 25 fit your wrist?
Drag the slider to your wrist width and see the Forerunner® 25 overlaid at true scale. Lug-to-lug — not case diameter — decides whether a watch overhangs your wrist.
Happy with the fit? Check current availability for the Forerunner® 25.
Check offer2D Dimension Schematics
The Forerunner® 25 drawn to scale — from above, and in profile against the wrist.
- Garmin Forerunner® 2535mm × 44mm · 13.9mm thick
3D preview
Garmin Forerunner® 25 on a wrist
On an arm sized to your own wrist — the view a product photo never gives you.
Shapes are built from published measurements, not manufacturer 3D models — accurate proportions, generic dial.
Forerunner® 25 battery life
The runtime the manufacturer publishes for everyday use.
- Smartwatch8 weeks
How the Forerunner® 25 ranks on battery
Against the 296 Garmin watches in our database, ranked on each figure Garmin publishes.
- Everyday use70 days#28 of 285
- GPS tracking10 hours#243 of 267
Forerunner® 25 specifications
The figures that decide a purchase, followed by every line Garmin publishes.
- Battery life
- Small: Watch: Up to 8 weeks; GPS mode: Up to 8 hoursLarge: Watch: Up to 10 weeks; GPS mode: Up to 10 hours
- Display
- Small: 0.73” x 0.73” (18.5 x 18.5 mm) Large: 0.91” x 0.91” (23.0 x 23.0 mm)
- Resolution
- 128 x 128 pixels
- Glass
- acrylic
- Strap
- silicone
- Storage
- 7 activities
Full specification sheet
39 published lines across 10 groups, unedited
Overview
- Family
- Garmin
General
- Battery life
- Small: Watch: Up to 8 weeks; GPS mode: Up to 8 hoursLarge: Watch: Up to 10 weeks; GPS mode: Up to 10 hours
- Display Size
- Small: 0.73” x 0.73” (18.5 x 18.5 mm) Large: 0.91” x 0.91” (23.0 x 23.0 mm)
- Lens Material
- acrylic
- Memory/History
- 7 activities
- Strap material
- silicone
- Display resolution
- 128 x 128 pixels
Sensors
- GPS
Product Info
- Main SKU
- 010-01353-01
- Product ID
- 164366
- Product Name
- Forerunner® 25
- Release Date
- 8/5/2015
- Product Variation
- Black/Blue Watch Only
Clock Features
- Stopwatch
- Time/date
- Alarm clock
- GPS Time Sync
- Automatic daylight saving time
Running Features
- Foot pod capable
- GPS-based distance, time and pace
- Cadence (provides real-time number of steps per minute)
Activity Profiles
- Outdoor recreation
Daily Smart Features
- Connectivity
- Smartphone compatibility
- iPhone®, Android™
- Pairs with Garmin Connect™ Mobile
Activity Tracking Features
- Step counter
- Calories burned
- Distance traveled
- Move alerts (displays on device after a period of inactivity)
- Auto goal (learns your activity level and assigns a daily step goal)
Training, Planning and Analysis Features
- HR zones
- yes (with compatible accessory)
- HR alerts
- yes (with compatible accessory)
- Manual lap
- HR calories
- yes (with compatible accessory)
- GPS speed and distance
- Customizable data pages
- Activity history on watch
- Auto Pause® automatic timer halt
- Auto Lap® interval tracking feature
Alternatives to the Forerunner® 25
Watches that cover a similar amount of wrist, with the measurements that separate them.
Garmin
Lily® 2 Classic
- Width
- 35.4mm
- Thick
- 10.1mm
- Weight
- 20.6g
Garmin
Lily® 2
- Width
- 35.4mm
- Thick
- 10.1mm
- Weight
- 24.4g
Garmin
Lily® - Sport Edition
- Width
- 34.5mm
- Thick
- 10.15mm
- Weight
- 24g
Garmin
Lily® - Classic Edition
- Width
- 34.5mm
- Thick
- 10.15mm
- Weight
- 24g
Garmin
Approach® S10
- Width
- 35.5mm
- Thick
- 11.3mm
- Weight
- 35g
Garmin
Forerunner® 30
- Width
- 35.5mm
- Thick
- 13.3mm
- Weight
- 37.3g
Forerunner® 25 — Frequently Asked Questions
Will the Garmin Forerunner® 25 fit my wrist?
The Garmin Forerunner® 25 looks balanced on flat wrist widths of roughly 46–63mm (about 12.3–16.8cm circumference). Drag the slider above to check it against your own measurement.
How long does the Garmin Forerunner® 25 battery last?
Garmin rates it at 8 weeks per charge in everyday use.
How does the Garmin Forerunner® 25 battery compare with other Garmin watches?
At 70 days in everyday use it ranks #28 of the 285 Garmin watches in our database — the top 10% of the range. The full ranking, including GPS and power-saving figures, is on our Garmin battery life comparison.
Is the Garmin Forerunner® 25 thick for a 35mm watch?
At 13.9mm, thicker than 99% of 35mm watches — it will sit noticeably high on the wrist. Thickness, not case width, is what decides whether a watch catches on a shirt cuff.
What other watches are the same size as the Garmin Forerunner® 25?
Apple Watch Series 11 - GPS + Cellular · Titanium · 42mm, Certina DS Action Quartz 34.5 Stainless Steel - Yellow Gold / MOP / Bracelet, Tissot PRX Quartz 35 Stainless Steel / Red, TAG Heuer Formula 1 Kith 35 PVD - Blue / Black all sit within half a millimetre of the Garmin Forerunner® 25's 35mm case, so they cover the same amount of wrist.
What is the lug-to-lug of the Garmin Forerunner® 25?
44mm, against a 35mm case width. Lug-to-lug is the measurement that decides overhang: if it exceeds the flat width of your wrist, the lugs sit past the edge no matter how modest the case diameter looks.
