Garmin Forerunner 970 Review: Premium Runner, Real Flaws

What it is

The Garmin Forerunner 970 is Garmin's flagship running watch for 2026, pitched squarely at serious runners and multisport athletes who want the most complete training tool Garmin makes below the Fenix line. It sits at the premium end of the market, priced at around £599.90 in the UK, which puts it in direct competition with the Amazfit Cheetah 2 Ultra. This is not an entry-level watch. It assumes you care about HRV trends, structured training, and GPS precision, and it charges accordingly.

Key specs

• GPS: Multi-band GNSS with satellite-based positioning across multiple constellations
• Battery life: Firmware 16.28 introduced battery manager insights, but GPS endurance figures from independent testing suggest multi-day use in GPS mode; the Amazfit Cheetah 2 Ultra projects 55 hours GPS for comparison at the same price point
• Sensors: Wrist optical PPG for heart rate and HRV (beat-to-beat intervals derived from blood volume changes via LED light), SpO2 optical blood oxygen, skin temperature, barometric altimeter for pressure-based altitude calculation
• Display: Touchscreen (touchscreen faults have been reported in early firmware builds)
• Water resistance: 5 ATM minimum, standard for Garmin Forerunner series
• Software: Running firmware 16.28 as of mid-2026, with Connect IQ support confirmed via third-party data field testing

Performance in the real world

Let's start with GPS accuracy, because that is supposed to be the headline reason you spend this much money. A controlled track test published in 2026 comparing the Forerunner 970 against the Apple Watch Ultra 3, Amazfit Balance 2, and Huawei Runner 2 produced a result Garmin fans won't enjoy: the 970 was beaten. Both the Forerunner 970 and Apple Watch Ultra 3 lost to at least one of the other competitors in that test, with the Apple Watch Ultra 3 suffering a major track mode failure. That the 970 didn't win outright at this price point is a real problem and worth keeping in mind before you hand over your cash.

Heart rate accuracy holds up better in practice. In a HYROX simulation test where the 970 was used as a reference device alongside a Whoop MG and hDrop sweat sensor, the watch served as the benchmark, which implies reasonable confidence in its optical PPG readings during high-intensity efforts. The Amazfit Balance 3 recorded about 3 bpm high versus that reference in the same session, suggesting the 970's HR data is at least competitive under load.

Sleep tracking and HRV have been sources of frustration. Issue 7 of The5kRunner's fix files documented elevation errors, sleep tracking faults, and HRV problems on the 970 within the same two-week period. These are not trivial bugs. HRV data is central to the watch's recovery and readiness features, and if the sensor pipeline is throwing bad numbers after workouts or overnight, the training load guidance built on top of it becomes unreliable. Garmin has been pushing updates, with version 16.28 bringing 12 new features including battery manager insights and smart notification delays, but the bug cadence through mid-2026 has been higher than you would expect from a watch at this price.

The rowing activity profile has also seen resets reported as recently as August 2026, and metronome silence is a recurring complaint. The Connect IQ ecosystem works cleanly, as confirmed by third-party sweat sensor integration tests, so the platform itself is solid. The app and data field support is genuinely one of the 970's strengths over competitors like the Amazfit Cheetah 2 Ultra, which cannot match Garmin's third-party ecosystem depth.

On the altimeter, the barometric sensor calculates altitude from air pressure changes rather than GPS elevation, which generally means more reliable climb data during runs and hikes. Elevation errors were flagged in firmware bugs mid-year, though subsequent updates appear to have addressed some of these.

Who it's for / who should skip it

The Forerunner 970 is for runners who are already embedded in the Garmin ecosystem and want the best Forerunner-line device available. If you use Garmin Connect, rely on Garmin Coach, or have compatible accessories like a chest strap or running dynamics pod, this watch makes sense as an upgrade. It is also for people who want deep third-party Connect IQ integration, because that library is unmatched at this price tier.

Skip it if GPS accuracy is your primary concern and you are willing to look outside Garmin. The controlled track test result is hard to ignore. Skip it too if early firmware reliability matters to you: the bug volume through the first months of availability has been significant, covering sleep, HRV, elevation, touchscreen, and activity-specific resets. If you want a trail-focused watch and can live without Garmin's ecosystem, the Amazfit Cheetah 2 Ultra at the same price posts 85% GPS accuracy in trail testing and a 55-hour GPS battery projection, which is a serious alternative.

Verdict

The Forerunner 970 is a capable, feature-rich running watch let down by a firmware reliability record that does not match its premium price, and a GPS accuracy result that should embarrass a device at this level. Buy it if the Garmin ecosystem is central to your training setup and you are prepared to wait for software to mature. If you are coming in fresh, test the competition first.