Forerunner 45
Forerunner 45
Forerunner 45

Forerunner 45

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Forerunner 45 is the GPS running watch with all the running-related features you need in a sleek, lightweight smartwatch you’ll want to wear all day and night.

Monitors heart rate at the wrist, while the GPS tracks pace, distance, intervals and more. Log more miles between charges with up to 7 days of battery life.

GARMIN COACH - These adaptive training plans feature guidance from expert coaches and free training plans that adapt to you and your goals. Workouts sync right to your watch.

BUILT-IN SPORTS APPS - Switch up your workout routine with activity profiles for cycling, treadmill running, indoor track, elliptical, cardio, yoga and more.

WRIST-BASED HEART RATE - Get heart rate data along with alerts if your heart rate stays too high or too low while you’re at rest. Gauge how hard your heart is working during activities, even underwater.

STRESS TRACKING - Find out if you’re having a calm, balanced or stressful day. Relax reminders will even prompt you to do a short breathing activity.

BODY BATTERY™ ENERGY MONITOR - Track your body’s energy levels so you can find the best times for activity and rest.

FITNESS TRACKING - While you’re out and about, Forerunner 45 tracks steps, intensity minutes and more.


42 x 42 x 11.4 mm

Fits wrists with a circumference of 129-197 mm

DISPLAY SIZE 1.04" (26.3 mm) diameter
DISPLAY RESOLUTION 208 x 208 pixels
DISPLAY TYPE sunlight-visible, transflective memory-in-pixel (MIP)

Small: 32 g
Large: 36 g

BATTERY LIFE Smartwatch Mode: Up to 7 days
GPS mode: Up to 13 hours
MEMORY/HISTORY 200 hours of activity data