Garmin Forerunner 70 vs Garmin Forerunner 170: what are the differences?
Garmin has launched two interesting GPS running watches with the Forerunner 70 and Forerunner 170, designed for athletes who want to get more out of their training. At first glance, both models look quite similar. They both feature an AMOLED display, advanced training functions and Garmin’s well-known health tracking metrics.
However, there are a number of key differences that make the Garmin Forerunner 170 slightly more appealing for some users. In this comparison, we clearly break down all the differences.
Screen and display
In terms of display technology, the differences are minimal. Both the Garmin Forerunner 70 and the Garmin Forerunner 170 feature a bright 1.2-inch AMOLED display with a resolution of 390 x 390 pixels. As a result, both watches look sharp, colourful and easy to read during workouts and everyday use.
| Specification | Garmin Forerunner 70 | Garmin Forerunner 170 |
|---|---|---|
| Display type | AMOLED | AMOLED |
| Screen size | 1.2 inch | 1.2 inch |
| Resolution | 390 x 390 pixels | 390 x 390 pixels |
| Touchscreen | Yes | Yes |
Design, materials and colours
In terms of design, both models are also very similar. They share the same 42.6 mm case and feature a reinforced glass lens with a polymer housing. The Forerunner 170 does, however, feel slightly more premium thanks to additional smart features and its more advanced positioning within Garmin’s range.
Both models are available in a range of sporty colour options and use interchangeable 20 mm quick-release straps.
Battery life
When battery life is important to you, the Garmin Forerunner 70 has a slight advantage.
| Usage | Garmin Forerunner 70 | Garmin Forerunner 170 |
| Smartwatch mode | Up to 13 days | Up to 10 days |
| Battery saver mode | Up to 28 days | Up to 19 days |
| GPS mode | Up to 23 hours | Up to 20 hours |
| Multi-GNSS | Up to 16 hours | Up to 14 hours |
The longer battery life makes the Forerunner 70 particularly appealing for users who prefer less frequent charging.
Health and sports features
In this area, both watches share a surprising number of similarities. Garmin has made many advanced training features available on both models, including:
- Training Readiness
- HRV Status
- Training Load
- Running Power
- Garmin Coach
- Body Battery
- Sleep Score
- Recovery Advice
- More than 80 sport profiles
However, the Forerunner 170 adds a few extra features that are especially useful for more dedicated athletes. These include Garmin Pay, support for additional cycling sensors, open-water swimming, and extra cycling features. The Music version also offers offline music storage.
Sensors
The biggest hardware differences are found in the sensors.
| Sensor | Garmin Forerunner 70 | Garmin Forerunner 170 |
| Optical heart rate monitor | Yes (Gen 4) | Yes (Gen 4) |
| GPS | Yes | Yes |
| Compass | No | Yes |
| Barometric altimeter | No | Yes |
| Gyroscope | No | Yes |
| Pulse Ox | Yes | Yes |
Thanks to the barometric altimeter, the Forerunner 170 can record elevation changes much more accurately during running, walking or cycling. The built-in compass and gyroscope also improve overall motion tracking accuracy.
Price differences
The price gap between both models remains relatively small.
| Model | Starting price |
| Garmin Forerunner 70 | From around €249 |
| Garmin Forerunner 170 | From around €299 |
| Garmin Forerunner 170 Music | From around €349 |
For roughly €50 more, the Forerunner 170 offers additional sensors, Garmin Pay and more advanced sports capabilities.
All in one overview
| Feature | Garmin Forerunner 70 | Garmin Forerunner 170 |
| AMOLED display | Yes | Yes |
| Screen size | 1.2 inch | 1.2 inch |
| Resolution | 390 x 390 | 390 x 390 |
| Smartwatch battery | 13 days | 10 days |
| GPS battery | 23 hours | 20 hours |
| Training Readiness | Yes | Yes |
| Running Power | Yes | Yes |
| Garmin Coach | Yes | Yes |
| Garmin Pay | No | Yes |
| Altimeter | No | Yes |
| Compass | No | Yes |
| Gyroscope | No | Yes |
| Open-water swimming | No | Yes |
| Music storage | No | Music version only |
| Starting price | ± €249 | ± €299 |
Where the Garmin Forerunner 170 is slightly stronger
Although both models share a large number of features, the Garmin Forerunner 170 is ultimately the more complete sports watch. The addition of a barometric altimeter, compass and gyroscope makes a noticeable difference during running, cycling and outdoor activities.
On top of that, Garmin Pay and the optional Music version add extra convenience for athletes who prefer to leave their wallet or smartphone behind. For serious runners or athletes who want to analyse their performance in more detail, the Forerunner 170 simply offers more possibilities.
Conclusion
The Garmin Forerunner 70 is an excellent choice for beginner runners and athletes who mainly want a reliable GPS watch with modern training features and long battery life.
However, if you are willing to spend a bit more, the Garmin Forerunner 170 clearly delivers more value. With additional sensors, Garmin Pay, more advanced sports profiles and music storage options, this model is better suited for more intensive use and long-term fitness goals.
For casual users, the Forerunner 70 is more than enough. For athletes who want to get more out of their smartwatch, the Forerunner 170 is the more interesting option.
Frequently asked questions
What is the biggest difference between the Garmin Forerunner 70 and 170?
The Forerunner 170 includes extra sensors such as a barometric altimeter, compass and gyroscope. It also supports Garmin Pay and additional sports features.
Are the straps interchangeable?
Yes, both the Garmin Forerunner 70 straps and Garmin Forerunner 170 straps use 20 mm quick-release bands, so they are compatible with both models.
Do both models have an AMOLED display?
Yes, both watches feature a 1.2-inch AMOLED display with a resolution of 390 x 390 pixels.
Which smartwatch has the best battery life?
The Garmin Forerunner 70 lasts longer on a single charge, reaching up to 13 days in smartwatch mode.
Is Garmin Pay available on the Forerunner 70?
No, Garmin Pay is only available on the Garmin Forerunner 170.
Is the Garmin Forerunner 170 worth the higher price?
For athletes who want extra sensors, more accurate data and Garmin Pay, the additional cost is fairly easy to justify.
Which Garmin Forerunner is best for beginners?
The Garmin Forerunner 70 offers the best value for beginner runners, while the Forerunner 170 is better suited for athletes looking to progress further.

