Garmin Forerunner 45 Large

Running GPS & Heart Rate Watches
NOW £150.00 Was £170.00

This easy-to-use running watch is perfect for daily runs, training sessions as well as every day wear. Built-in GPS tracks where you run and gives you accurate stats, including distance, pace and intervals. Its intuitive button interface makes it easy to mark a lap or pause the timer. Forerunner 45 also monitors heart rate at the wrist, day and night.


Gear up with Garmin Coach

Whether you are a seasoned runner or just getting off the sofa, everyone can use a little bit of guidance. That’s why Forerunner 45 is compatible with Garmin Coach adaptive training plans. These plans feature guidance from expert coaches and free training plans that adapt to you and your goals. It’s a foolproof way to get to the finish line. As part of your training plan, it can even help you predict your race time, and the workouts sync right to your watch.

Stay connected on the run

Safety and tracking features make it easy to share your location with chosen contacts in case you need assistance — manually, or automatically with built-in incident detection2. A variety of connected features keeps you in touch with the rest of the world during and in between runs. Get smart notifications delivered to your wrist for incoming text messages and phone calls. When paired with your compatible smartphone, Forerunner 45 will automatically upload your run data to the Garmin Connect online fitness community. It even has handy controls for the music playing on your phone, so you can skip songs without missing a beat.

There's more to do

With a dozen activity profiles available, you’ll always have a way to capture your sweat equity, even when you don’t feel like running. Forerunner 45 can record your efforts during a cycling workout, on the treadmill, indoor track and elliptical — and whilst doing cardio, yoga and more.

On the way to wellness

The Forerunner 45 GPS running watch offers extensive activity and wellness tracking features. Wear it 24/7 to monitor daily steps, distance, calories burned and even sleep¹. This smartwatch also features all-day stress monitoring for wellness tracking during the day. If your stress level starts to climb, use the relaxation breathing timer for a few minutes of guided breathing, which can help calm your mind and body. To help you optimise your body’s energy, Body Battery energy monitoring uses collected data to gauge your energy reserves at any moment, so you can plan your day to optimise times for activity and rest.

Share and compete

Syncing your activities to Garmin Connect is for more than just storing your data. Garmin Connect is a thriving online community where people on the go can connect and compete by joining challenges, encourage each other’s successes and even share their triumphs via social media. Garmin Connect is free and available on the web or on your smartphone.

Make a statement

Express your personality by customising Forerunner 45. It’s compatible with free watch faces from our Connect IQ Store. Choose from thousands of watch faces available to download, or create your custom watch face from your own photos.

1Activity tracking accuracy
2When paired with a compatible smartphone. See safety and tracking features requirements and limitations

  • GPS, Galileo, GLONASS - pace, distance, time
  • Display resolution 208 x 208 pixels
  • Weight
    • Small: 32 g
    • Large: 36 g
  • Display type: Sunlight-visible, transflective memory-in-pixel (MIP)
  • Battery life: smartwatch mode up to 7 days; GPS mode up to 13 hours
  • Display size1.04" (26.3 mm) diameter
  • Colour display
  • Memory/history 200 hours of activity data
  • Time/Date, calendar, alarm clock


  • Customisable screen(s)
  • Customisable activity profiles
  • Controls smartphone music
  • Downloadable training plans (5K, 10K, Half marathon)
  • Garmin Elevate wrist heart rate monitor
  • HR zones, HR calories, HR alerts, Calories burned
  • Step counter, Intensity minutes, Auto goal (learns your activity level and assigns a daily step goal)
  • Run workouts
  • Interval training, stopwatch, timer
  • Manual lap, auto lap, auto pause
  • Body Battery™ Energy Monitor
  • Compatible with Garmin Connect Mobile
  • Smartphone compatibility: iPhone®, Android
  • Lens material: Chemically strengthened glass
  • Find my phone, Find my watch
  • LiveTrack
  • Assistance (Smartphone required)
  • Available run profiles: Running, Treadmill Running. Indoor Track Running may be added through app
  • Available cycling profiles: Biking, Indoor Biking may be added through app
  • Activity history on watch
  • Advanced workouts
  • Speed and cadence sensor support (with sensor)
  • Cadence (provides real-time number of steps per minute)
  • Available gym activity profiles: Cardio and Elliptical Training, Stair Stepping, Yoga may be added through
  • All-day stress tracking
  • Incident Detection during select activities (Smartphone required)
  • Foot pod compatible
  • Automatic daylight saving time
  • Smart notifications
  • Sleep monitoring (monitors total sleep and periods of movement or restful sleep)
  • VO2 max
  • Accelerometer
  • Touch and/or button lock
  • Audio prompts
  • Time/distance alerts (triggers alarm when you reach goal)


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Delivery Information

UK Delivery is FREE on orders over £10.

International Delivery within 3 working days via DHL (prices vary according to country).

Priority First Class Delivery within 3 working days (charge £5).

Next Day Delivery available weekdays on orders placed before 3pm for next working day delivery (charge £7).

Orders placed Monday - Friday before 3pm will be dispatched the same day.

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