The Forerunner 70 is built with new runners in mind, and it’s just getting started. That said, it’s not a bad fit for experienced runners either, especially if you don’t need every extra feature packed into Garmin’s pricier Forerunner models.
Running comes first here, but this watch handles plenty of other sports, and it holds its own outside training runs as well. Just don’t expect the full range of smartwatch and wellness features Garmin offers on its higher-end lineup; some of that gets left out.
This watch replaces the aging Forerunner 55, and it’s a clear step up in capability. That upgrade comes with a higher price tag, which makes sense. I spent a month running with the Forerunner 70 to see whether it earns a spot among the best watches for tracking runs, and everything else I do in between them.
Garmin Forerunner 70 Full Specs
Garmin Forerunner 70 Design and Screen
Size-wise, the Forerunner 70 stays small. The case measures 42.6mm, and the body runs 11.9mm thick, so it doesn’t take over your wrist the way some smartwatches do. For reference, it sits just slightly bigger than the 41mm Pixel Watch 4 and lands close to a 42mm Apple Watch Series 11 in overall size.
Where it differs from those watches is the build. Garmin leans heavily on polymer here, which keeps the weight down to just 40 grams, light enough that you barely notice it running, and easy to toss in a bag afterward. It comes in four colors, all leaning playful and clearly built for sport rather than the office.
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Like Garmin’s other AMOLED watches, physical buttons haven’t gone away. Five of them sit around the case, giving you a second way to control the watch alongside the screen.
That screen is a 1.2-inch AMOLED panel at 390 by 390 resolution. Colors come through vivid, and swiping or tapping around never introduces any noticeable lag. You can crank up brightness for sunny days and leave the display on permanently if you prefer. If you are coming from the Forerunner 55, this display alone marks a real leap forward.
The silicone strap comes off easily thanks to Garmin’s quick-release system. Official replacement bands aren’t cheap, though third-party options give you plenty of cheaper alternatives if you want variety without the markup.
On waterproofing, the Forerunner 70 carries a 5ATM rating, good down to 50 meters, which is standard for watches in this price bracket. I have worn it through showers, in the pool, and in the sea without any issues.
Garmin Forerunner 70 Performance and Software
The Forerunner 55’s software had started to feel dated, particularly next to Garmin’s newer AMOLED lineup, so a refresh on its successor was expected.
Most of that refresh lives on the watch itself. Garmin’s Connect app still feels like a lot to take in if you’re new to the ecosystem, though Garmin has trimmed things down in places to make it friendlier for first-timers.
The watch software fares much better. It doesn’t take long to find your way around, and true to Garmin form, there’s still plenty tucked into menus for you to dig into over time.
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The biggest change is full access to Garmin’s ConnectIQ Store. The Forerunner 55 only lets you download watch faces. The 70 opens things up to apps, data fields, watch faces, and extensions. There’s more paid content showing up now too, and browsing the store still isn’t as smooth as scrolling Google Play or the App Store.
Everyday tasks like checking notifications, controlling music, or pulling up the weather work smoothly and fit the small display well.
A few gaps show up between iOS and Android; Android users can reply directly to notifications, for instance, while iPhone users can’t. Outside of that, the experience feels consistent no matter which phone you pair it with.
It’s also worth noting that the 70 now gets Garmin’s morning and afternoon reports. These daily rundowns highlight what you’ve accomplished, flag the weather ahead, and give you a preview of your next training session once you’ve slept.
One thing missing: Garmin’s newer extras like built-in music storage, calling, or contactless payments. None of those made it onto the Forerunner 70. You’ll need to spend more for a watch that includes them.
Garmin Forerunner 70 Tracking and Features
The Forerunner 55 came out roughly five years ago, so its successor had real ground to cover on the smarts front. That doesn’t mean the 70 gets Garmin’s absolute best hardware and software, but enough has moved forward to deliver tracking that feels genuinely well-rounded.
Start with GPS accuracy, since that matters a lot if you’re running or riding outdoors regularly. Garmin fits the 70 with a multi-GNSS setup rather than the multiband tech found on pricier Forerunner models. In practical terms, that means it can struggle a bit more to lock onto satellites near tall buildings.
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Still, I tested the 70 side by side with watches running more advanced setups, including other Garmins, and accuracy held up well throughout. The older sensor tech clearly doesn’t drag this watch down as much as you’d expect.
Running is the main focus, but the 70 also tracks cycling, both indoors and out. You’ll find dedicated profiles for indoor workouts like HIIT and yoga, plus hiking support. For hiking specifically, you can now upload routes and follow breadcrumb-style navigation to stay on track, a feature the Forerunner 55 never had.
Pool swimming tracks reliably too. Open water swimming isn’t supported, though, and you won’t find multisport or triathlon modes here, features that some competing watches at this price do offer.
The 70 tracks heart rate and blood oxygen continuously, but it skips Garmin’s newer Elevate optical sensor. That rules out skin temperature tracking and ECG-style heart readings.
If steady, round-the-clock heart rate tracking matters to you, that’s an area where the Forerunner 70, and Garmin watches in general, really deliver. Accuracy holds up during workouts too. If you want to push it further, you can pair the 70 with an external Bluetooth heart rate monitor for the most precise readings possible.
Daily activity tracking and sleep monitoring impressed me as well. I wore the 70 alongside two other trackers, comparing step counts, sleep data, and how well each one nudges you to move more or make sense of your sleep patterns.
Step counts on the 70 landed close to both other trackers. Sleep tracking shows real improvement too, especially in nailing down total sleep time and correctly spotting when you actually drifted off.
I tested it against an Apple Watch and an Oura Ring 5, two of the most trustworthy sleep trackers out there, and on most nights the core numbers, duration, and sleep stages told a similar story across all three.
One of the clearest upgrades over the 55 is how much deeper the training features go now. This watch doesn’t just log your workouts; it analyzes them and tries to steer you toward smarter decisions about your training.
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Training Readiness stands out as a favorite. It used to be locked to Garmin’s more expensive watches, and now you get it here too: a simple score built from your sleep and workout history that tells you whether to rest or push through a tough session.
The 70 also connects to Garmin Coach, which suggests running workouts based on how hard you want to train.
If you’re looking to add real structure to your training without knowing where to start, this is exactly the kind of feature that helps. Garmin also just presents this stuff more clearly than most competitors manage, which makes it genuinely easy to put to use.
Garmin Forerunner 70 Battery Life
Garmin’s longest-lasting watches cost considerably more than the Forerunner 70, so some compromise on battery life comes with the territory here. That said, this still isn’t a watch you’ll be charging every couple of days, even running the AMOLED display always-on.
Garmin rates it up to 28 days, but only in battery saver mode, which switches off continuous heart rate tracking and cuts the Bluetooth connection, taking notifications with it.
If used normally for workouts and everyday smartwatch features, expect somewhere between 5 and 13 days. In my testing, it comfortably cleared a week without the always-on display enabled. I turned that on and use GPS and continuous health tracking regularly, and battery life drops closer to 4 days.
Charging runs through Garmin’s proprietary cable, which by now works across most of the current lineup. It’s not an ideal charging solution, but at least you can borrow a cable from another Garmin owner if yours goes missing.
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For outdoor GPS tracking specifically, battery life runs from 16 to 23 hours. Running GPS in its most accurate setting, I saw it drain around 10% per hour on average, which falls a bit short of Garmin’s claimed 16-hour mark. If you’re only using GPS three or four times a week, though, that’s still plenty to get by comfortably.
Garmin Forerunner 70 Verdict
The Forerunner 70 is a running watch worth paying attention to. The catch is the price; it costs noticeably more than the Forerunner 55 it replaces.
Pros |
Cons |
| Good sports tracking and not just for running | Compact size |
| Big software upgrade on the Forerunner 55 | Misses out on some more advanced sports modes |
| Lightweight and small case design | Price jump from Forerunner 55 |
Final Thoughts
The Garmin Forerunner 70 shapes up as a good pick, mainly for runners who want a smaller watch on their wrist without giving up a good mix of tracking, smartwatch features, and training tools, all at a lower price than Garmin’s other Forerunner models.
If you are coming from a Forerunner 55 and thinking about upgrading? There’s plenty here to make that worthwhile. Just be ready to pay noticeably more for it.
