Garmin Slams the Door on Your Data: What It Means for Your Training

Garmin has quietly rewritten the rules, and cyclists could be the ones who pay for it.

No announcement. No email. No warning. The updated terms simply appeared in the Garmin developer portal, and the cycling data community has been buzzing ever since. The upshot? Access to Garmin data through the API is likely to be blocked soon, and that could hit the apps you rely on, including VeloGrit.

Let's cut through the noise and tell you what we know, what we suspect and what you can do about it.

Key Takeaways

• Garmin's terms have been updated without any notice to developers.
• API access to Garmin data via Intervals.icu is likely to be blocked in the near future.
• HRV and sleep data coming straight from Garmin could be affected.
• There is a community workaround that uploads your original files instead.
• VeloGrit is here to stay, and it works perfectly well without HRV and sleep data.

What Has Actually Happened?

According to the Intervals.icu community, the updated Garmin terms showed up out of the blue in the developer portal. There was no announcement and no notification. The Intervals.icu team has said it will probably have to block access to Garmin data through the API soon.

Forum users have also pointed to a clause in the publicly downloadable Garmin Connect Developer Program Agreement. As reported on the forum, clause 5.1(o) forbids a licensee's API from passing end-user data on to third-party services that Garmin hasn't approved in writing. Whether the newer terms go further than that is something only Garmin knows.

Want to follow the story? Keep an eye on the Intervals.icu forum thread for the latest updates.

Will I Lose My HRV and Sleep Data?

This is the question everybody is asking, and the honest answer is: it depends on how your data gets from your Garmin to your training tools.

If the block lands, the standard Garmin connection could stop delivering wellness data such as HRV and sleep to the apps that depend on it. That is the bad news.

The better news is that there appears to be a way around it. The community has been talking about an open-source tool called garmin-intervals-bridge. Its "Upload mode" sends the original FIT file of each new activity to Intervals.icu as your own upload, rather than as Garmin API data. One forum user reports that Intervals.icu still computes metrics such as Training Effect, VO2max and Recovery Time from the complete file, and that wellness data such as sleep and HRV can be synced the same way.

A word of caution. This is a third-party tool, it is not affiliated with VeloGrit, and you use it at your own risk. Check the documentation carefully before you switch anything off.

Why Would Garmin Do This? Our Suspicion

Here is where we put on our detective hats. We can't prove a thing, but the timing raises eyebrows.

Garmin has taken over TrainingPeaks. At the same time, many cyclists have had a lukewarm experience with Garmin Connect+. Put those two together, and it looks to us like Garmin wants a bigger slice of the pie back. If your data flows freely into other platforms, there is less reason to pay for Garmin's own services.

To be clear, this is a suspicion and not a confirmed fact. Garmin has not said this is the reason. But when a company closes the gates just as it builds up its own training ecosystem, riders are entitled to ask questions.

So, Is VeloGrit Finished?

Not a chance.

VeloGrit is staying right where it is, and it keeps working even without HRV and sleep data. Your plan is driven by what you actually do on the bike: your rides, your power, your training load and how you respond to your sessions. HRV and sleep are a nice extra layer of insight, but they were never the foundation.

That means you can keep getting an adaptive training programme that adjusts when life gets in the way, with structured workouts delivered to Zwift, Garmin or Wahoo. The ride is the heart of the plan. Always has been.

What Should You Do Right Now?

Don't panic, but do prepare.

• Keep an eye on the forum thread for official updates.
• If you rely on Garmin wellness data, read up on the upload workaround before the block arrives.
• Make sure your rides are still flowing into your training platform, and check this regularly.
• Remember that consistent training beats perfect data every time.

Whatever Garmin decides, your fitness isn't stored in an API. It is in your legs. And VeloGrit will keep helping you build it.

The Bottom Line

Garmin may be changing the rules of the game, but the game itself hasn't changed. You still need a smart plan, honest data from your rides and the flexibility to adapt when life throws a curveball. That is exactly what VeloGrit delivers.

Start your adaptive training journey at velogrit.cc today. You've got the grit; we've got the data.

Frequently Asked Questions

Is Garmin definitely blocking API access?

Not officially confirmed yet. The Intervals.icu team has said it will probably have to block access soon, based on the updated terms. Follow the forum thread for the latest.

Will VeloGrit still work if my HRV and sleep data disappear?

Yes. VeloGrit keeps working and builds your plan from your ride data and training load. HRV and sleep add extra context but are not required.

Is there a workaround for getting wellness data?

Community members are using a third-party tool called garmin-intervals-bridge, which uploads your original files and syncs wellness data. It is not affiliated with VeloGrit, so use it at your own risk.

Why would Garmin restrict access to its data?

Garmin hasn't given a reason. Our suspicion is that it is linked to the TrainingPeaks takeover and to Garmin Connect+, but that is speculation.

Do I need a Garmin device to use VeloGrit?

No. You can use VeloGrit with a range of setups, including Zwift and Wahoo.