Garmin Forerunner 25 vs Garmin Forerunner 570

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Forerunner 25 compared with Forerunner 570

	GarminForerunner 25	GarminForerunner 570
Overview
Released
Released	2015	May 2025
Display
Case sizes
Case sizes	43.9 mm or 47 mm	42 mm or 47 mm
Panel
Panel	Memory-in-pixel	OLED
Always-on display
Always-on display	Yes	Yes
Display detail
Display detail	Monochrome transflective memory-in-pixel display, 128 × 128 pixels; 18.5 × 18.5 mm in the small version and 23 × 23 mm in the large version.	42 mm model has a 1.2″ (30.4 mm) AMOLED touchscreen, 390 x 390 pixels; 47 mm has a 1.4″ (35.3 mm) AMOLED touchscreen, 454 x 454 pixels; five buttons; optional always-on mode
Screen protection
Screen protection	–	Corning Gorilla Glass 3
Health and fitness
ECG
ECG	No	No
Blood oxygen
Blood oxygen	No	Yes
Skin temperature
Skin temperature	No	Yes
Sleep apnoea alerts
Sleep apnoea alerts	No	No
High blood pressure alerts
High blood pressure alerts	No	No
Body composition
Body composition	No	No
Fall detection
Fall detection	No	No
Crash detection
Crash detection	No	No
GPS
GPS	Single-band	Dual-band (L1 and L5)
Water resistance
Water resistance	50 m	50 m
Sensors
Sensors	Built-in GPS and accelerometer; heart rate requires an optional ANT+ chest strap, and an optional foot pod is supported.	Garmin Elevate wrist heart rate monitor; Pulse Ox blood oxygen monitor; barometric altimeter; compass; gyroscope; accelerometer; thermometer; ambient light sensor
Health features
Health features	Daily steps, automatic step goal, inactivity bar and sleep monitoring; heart-rate zones require a paired chest strap.	Skin temperature; high and low heart rate alerts; HRV status; Body Battery; all-day stress; sleep score, sleep coach, sleep alignment and nap detection; breathing variations; Health Snapshot; women's health tracking with past ovulation estimates; jet lag adviser
Fitness features
Fitness features	Running pace, distance, personal records, Virtual Pacer, Auto Pause, Auto Lap and time, distance and run/walk alerts; indoor distance from its accelerometer.	Training readiness and training status; training load, load ratio and load focus; training effect, VO2 max and recovery time; wrist-based running power and dynamics; PacePro; race predictor and projected race time; Garmin Coach and Garmin Triathlon Coach plans; daily suggested workouts; multisport workouts; heat and altitude acclimation; course navigation, TracBack and Up Ahead; triathlon and open-water swimming
Safety features
Safety features	Live Tracking shares a run through a paired compatible smartphone.	Incident detection during select activities; assistance; LiveTrack; live event sharing (Android only); these features require a paired phone
Battery and connections
Battery life (maker's claim)
Battery life (maker's claim)	Up to 70 days	Up to 11 days
Mobile data option
Mobile data option	No	No
Works with
Works with	iPhone and Android	iPhone and Android
Storage
Storage	–	8 GB
Battery life detail
Battery life detail	Small version up to eight weeks in watch mode or eight hours of GPS training; large version up to ten weeks or ten hours respectively.	Smartwatch mode up to 10 days (42 mm) or 11 days (47 mm); GPS only up to 18 hours for either size; SatIQ (AutoSelect) up to 14 or 16 hours; All-Systems + Multi-Band up to 13 or 14 hours; with music, GPS only up to nine hours and the other two modes up to eight hours for either size
Charging
Charging	Rechargeable lithium-ion battery; charging and data cable supplied.	Garmin charging cable with proprietary plug
Connectivity
Connectivity	Bluetooth Low Energy syncs to Garmin Connect Mobile and displays paired-phone notifications; ANT+ supports optional heart-rate and foot-pod accessories.	Bluetooth, ANT+ and Wi-Fi; multi-band GPS with GPS, GLONASS, Galileo, QZSS, BeiDou and SatIQ; Garmin Pay; music storage; speaker and microphone for calls and the phone's voice assistant with a paired phone; voice commands; Garmin Share; Connect IQ
Storage
Storage	Seven activities of on-watch history.	–
Design
Weight (lightest version)
Weight (lightest version)	31 g (better)	42 g
Software
Software	Garmin	Garmin
Case materials
Case materials	Silicone band and 5 ATM water rating.	Aluminium bezel; silicone band; 5 ATM water rating
Size
Size	Small version 35.9 × 43.9 × 13.9 mm, 31 g; large version 40.2 × 47 × 13.9 mm, 39 g. Longest case dimensions appear in the size comparison.	42 mm model is 42.4 x 42.4 x 12.9 mm and 42 g; 47 mm model is 47 x 47 x 12.9 mm and 50 g; Garmin does not publish case-only weights
Bands
Bands	–	Quick-release 20 mm bands for the 42 mm model, fitting 115–178 mm wrists; quick-release 22 mm bands for the 47 mm model, fitting 135–205 mm wrists
Colours
Colours	Large versions in black/blue and black/red; small versions in black/violet and white/pink.	–
In the box
In the box	Watch, charging/data cable and manual; some bundles also included a heart-rate chest strap.	Forerunner 570, charging cable, documentation