
Amazfit T-Rex 3 Pro gets TrainingPeaks and Intervals integration
Amazfit has released version 2.4.2.1 firmware for the T-Rex 3 Pro. The 13MB update adds support for third-party training plans, refines how workouts end, and fixes a couple of known bugs.
You can now sync structured workouts
With this release, users can now sync their TrainingPeaks and Intervals.icu plans to the Zepp Health app and push them to the watch. This includes structured workouts for running, cycling and swimming. Once synced, the plans are ready to follow on the wrist without needing to carry a phone.
This makes life easier for anyone already using those platforms to manage their training blocks. No need to copy workouts over or deal with clunky workarounds. It’ll be worth watching to see if this update makes its way to the regular T-Rex 3 or other Amazfit models too.
Workout handling has also been adjusted. You now need to pause a session before ending it. It is an extra step that some might find annoying. But that tweak should reduce accidental shutdowns if the wrong button is pressed mid-activity, especially in cold or wet conditions. It also makes the workout flow slightly more in line with what you see on other sports watches.
Finally, the update fixes a bug where offline route planning could create reverse directions. A few other system issues were also addressed to improve general stability, although the change-log doesn’t go into detail.

Small tweaks, steady progress
In our hands-on review, I found the T-Rex 3 Pro to be the most complete version of Zepp Health’s outdoor watch to date. It refines the vanilla version with upgrades such as a titanium case, sapphire glass, and a new 44mm option for smaller wrists. Battery life remains excellent despite the brighter screen and added features. Tools like the BioCharge score, LED flashlight, maps, speaker and navigation all contribute to a well-rounded outdoor package.
That said, the software still feels a bit stripped down compared to the Balance, and it doesn’t aim to match Apple or Samsung on smart features. But the fitness tracking is accurate, the interface is smooth, and it nails the basics. At $399, it’s not cheap, especially with the standard T-Rex 3 often available for less. Still, it offers much of what you’d get from a Garmin Fenix at half the price.
All in, the T-Rex 3 Pro hits a solid balance of rugged build, solid tracking and practical features. The latest update just adds to that, with TrainingPeaks and Intervals.icu sync. Zepp Health’s clearly not done yet, and it’s good to see the watch getting smarter with time.
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