How do you spot a runner in the wild? Chances are, they’ll be wearing a Garmin on their wrist. Whether pacing the streets or crossing a race finish line, Garmin watches are a runner’s go-to. With Black Friday deals just around the corner, it’s the perfect time to upgrade your gear. But how do you decide between the ade your gear and snag the best deals! But with so many options, how do you decide between the Garmin Forerunner 255 and the Garmin Forerunner 55? Don’t worry, I’ve got you covered with a full comparison.
Garmin Forerunner 255 vs 55: The Basics
The Forerunner 55 is perfect for beginners, offering essential tracking features and simplicity.
The Forerunner 255 is aimed at more serious runners, offering advanced metrics and multi-sport support.
| Feature | Garmin Forerunner 55 | Garmin Forerunner 255 |
|---|---|---|
| Target Runner | Beginners | Intermediate/Advanced |
| Display Size | 1.04” (208×208 px) | 1.3” (260×260 px) |
| Colors | Black, White | Slate, Pink, White |
| GPS & Heart Rate | ✅ | ✅ |
| Running Metrics | Distance, Pace, Laps, Cadence | Distance, Pace, Laps, Cadence, Running Power, Training Effect, Recovery Time, Stride Length |
| Sleep & Stress Tracking | ❌ | ✅ |
| Battery Life (GPS) | 20 hours | 30 hours |
| Multi-Sport Support | ❌ | ✅ |
| Music Storage | ❌ | ✅ |
| Garmin Coach Training Plans | ✅ | ✅ |
| Price | ~£200 | ~£250+ |
Design & Display: Which Fits Your Wrist?
Garmin Forerunner 55:
- 42mm case, lightweight, ideal for smaller wrists
- 1.04-inch display, clear but smaller resolution
- Available in black and white
Garmin Forerunner 255:
- 1.3-inch display, sharper resolution
- Lightweight but slightly larger for more on-screen data
- Multiple colours: Slate, Pink, White
Both watches use a five-button design (no touchscreen), which is easy to operate and avoids smudges.
Features Comparison: What Sets Them Apart
Now, let’s talk about what really matters: the features. Both the Forerunner 55 and the 255 track all the essentials, but here’s where the 255 pulls ahead.

Garmin Forerunner 55:
- GPS and Heart Rate Monitoring: Of course, you get GPS tracking, heart rate monitoring, and pace tracking. Perfect for those long runs or 5Ks!
- Basic Running Metrics: The Forerunner 55 covers distance, time, pace, and laps, plus offers cadence tracking.
- Battery Life: Expect about 20 hours of battery life with GPS on, which is solid for a basic running watch.
- Training Plans: It gives you access to Garmin Coach for personalised training plans, which is a nice bonus for beginners.

Garmin Forerunner 255:
- Advanced Running Metrics: The 255 delivers advanced metrics like running power, training effect, recovery time, and stride length. If you’re serious about improving your performance, these features can help you fine-tune your runs and elevate your game.
- Sleep and Stress Tracking: The Forerunner 255 offers advanced tracking for both sleep and stress levels. This means it’s not just focused on running but also on recovery.
- Battery Life: With up to 30 hours of GPS use, the 255 is perfect for longer runs or races.
- Multi-Sport Modes: The 255 supports multiple sports beyond running, such as cycling, swimming, and even triathlon mode. This is ideal if you cross-train or plan to participate in multi-sport events.
- Music Storage: The Forerunner 255 has the option for music storage. You can leave your phone at home and run with your favourite playlist directly from your watch.
Connectivity and app integration: Stay connected
Both watches connect to your phone and sync with Garmin Connect. The Forerunner 255 offers more options for apps like Strava and MyFitnessPal, making it perfect for tracking all your activities in one place.
Price: Which one fits your budget?
- Garmin Forerunner 55 comes in at a more affordable price point (usually under £200), making it an attractive choice for budget-conscious runners. If you’re just looking for the essentials, this one’s a great pick.
- Garmin Forerunner 255, on the other hand, is priced higher (around £250+), but the additional features like better battery life, advanced metrics, and multi-sport tracking make it worth the investment if you’re serious about training.
So, which one should you choose?
It all depends on what you’re looking for in a running watch.
- Go for the Garmin Forerunner 55 if you’re new to running or just want a reliable, no-frills watch that tracks your basic metrics and offers fantastic value for money.
- Go for the Garmin Forerunner 255 if you’re a more experienced runner (or planning to become one!) who wants advanced metrics, longer battery life, multi-sport tracking, and the ability to leave your phone behind while you run to music.
Both watches are amazing in their own right, so it really comes down to your budget and how much you want your watch to do for you.
Ready to make your choice? Check them out here:
- Garmin Forerunner 55: Click here to buy
- Garmin Forerunner 255: Click here to buy
No matter which one you choose, both of these Garmin watches are sure to help you step up your running game! And with Black Friday deals, there’s no better time to grab one

Say Goodbye to Scratches
Ever winced at a tiny scratch on your Garmin screen? These screen protectors are a lifesaver. They fit perfectly, stay crystal clear and keep your watch looking brand new. Honestly, such a simple thing that makes a huge difference. Check out the ones I use on Amazon below.
Garmin Forerunner 255 vs 55: FAQ
A: Yes, you can store music directly on the 255 and run without your phone.
A: If you’re new to running, the 55 is perfect. For advanced runners, multi-sport tracking, and music storage, the 255 is the better choice.
A: Forerunner 55 lasts ~20 hours with GPS; 255 lasts up to 30 hours with GPS.
A: Yes, both watches support Garmin Coach for personalised running plans.


