The Forerunner 570 delivers 15 days in smartwatch mode and up to 26 hours in GPS mode — more than enough for standard marathon training and racing scenarios. Multi-band GPS mode reduces to approximately 13 hours, which comfortably covers marathon and 50K ultra finishers. Battery saver GPS mode can extend this further for ultra-distance events.

Compared to the Forerunner 970, the 570 has slightly shorter battery life, reflective of a smaller battery cell — a direct consequence of the 570's slimmer, lighter case. The tradeoff is a watch that feels less bulky on the wrist during long training runs. For most running use cases outside multi-day ultramarathons, the 570's battery life is entirely sufficient.

The 570 carries the same core health platform as the 970 minus the ECG. HRV Status monitors overnight heart rate variability trends over weeks and months, producing a long-term recovery and fitness signal far more reliable than any single-day reading. Body Battery synthesises stress, sleep, and HRV into a continuously updated 0–100 energy reserve metric that accurately predicts how much capacity you have for training or demanding cognitive work.

Sleep tracking produces stage-level breakdowns of REM, light, and deep sleep, with Nightly Recharge scoring overnight recovery quality. VO2 Max is dynamically updated from running activity and provides a reliable fitness trend over a training cycle. All 570 health data integrates fully with Garmin Connect's analytics, Strava, and third-party platforms via the Health API, making the 570's health data actionable across the full ecosystem of training apps.