Ray Maker of DCRainmaker.com wrote a detailed article yesterday on apparently dramatic changes made by the Strava platform to how OUR data is handled, limiting the scope of what 3rd party developers can do and effectively stopping most (all) apps working with Strava. As Ray said, “…every single partner I’ve talked to over the last 24 hours has been completely broadsided by this change.”
I encourage you to read that article for more context, as I won’t cover the same ground again here. Either way, Strava has now issued a clarification to further muddy the water 😉
We wanted to provide some additional context around the changes to our API Agreement and the impact for our users and developers. We currently anticipate these changes will impact less than .1% of applications and proactively notified the majority of those affected last week.
Enhanced Privacy and User Control
Privacy and user control are at the forefront of our platform. As a result, we are committed to evolving our API practices as regulatory requirements and user expectations shift. This includes the decision to limit the ability of a user’s data to be displayed by third-party apps in ways the user may not expect. Specifically, we want to thoughtfully address situations where users connect to a third-party app and are unaware that their data is being surfaced not just for their own use and visibility, but also to other users (for example, in a public feed or heatmap). The latest API changes address this scenario and provide a more consistent framework for Strava user data.
Training AI Models
We believe in the potential of AI to transform the athlete experience. But innovation in this space must be handled responsibly and with a firm focus on user control. Third-party developers may not take such a deliberate approach to training AI models and as a result, we believe the best decision for the platform and for users is to prohibit the use of data extracted from Strava users in this manner. Our previous terms already disallowed the use of Strava user data in model training and development but we’ve made this more explicit in light of the increasing activity in this space.
No Impact to Most Developers
We recognize that our platform thrives because of the creativity and dedication of third-party developers who build tools to complement and extend Strava’s capabilities. We are steadfast in our commitment to fostering this ecosystem. We anticipate that these changes will affect only a small fraction (less than .1%) of the applications on the Strava platform. [Brian Bell, Strava VP of Communications and Social Impact]
Thus, Strava identified an issue with certain third-party applications and acted to address it, arguably somewhat heavy-handedly. Their explanation about protecting user data from being unwittingly displayed in third-party feeds is a reasonable goal, reflecting their focus on privacy and control. This change almost certainly has been driven by Strava data showing military and secret service personnel locations – hence the people they protect.
On the topic of “Training AI Models,” there seems to be some ambiguity in everyone’s understanding of what an AI model is and is not. For instance, if a developer uses AI/ML solely on an individual user’s data to provide personalised insights, that seems acceptable. However, many people might find it problematic if another developer uses aggregated or anonymised user data to train a population-level AI model.
Take Out: Nut. Hammer. Sledge. Crack – Make your own sentence
Strava deserves the benefit of the doubt in this instance. These complex issues require thoughtful handling, and their intentions could be read to be aligned with safeguarding user trust. That said, there may have been a more nuanced way to announce and implement these changes!
Furthermore, Strava’s track record with third-party developers – such as its controversial action against RELIVE in 2019 – adds another layer of scepticism. For those already mistrustful of Strava’s actions, moves like this don’t do much to rebuild confidence.
Last Updated on 4 October 2026 by the5krunner
Small things I always use
- Garmin 90-degree charging adapter: Charges your Garmin from any USB-C cable. Essential when travelling. I use one.
- Body Glide: The blue anti-chafe stick swimmers and runners carry. I use it.
- Speedo earplugs: Fewer ear infections and no cold-water dizziness. I use them.
- Dryrobe Advance: My winter changing robe for open-water swims. I use one. A cheaper option is the AONYIYI changing robe.
- Maurten: Race fuel that stays easy on the stomach. I use them.
- Garmin charging puck: The quickest way to top up before a session. I use one.
- Injinji: Toe socks that stop rubbing, so you run more. I use them.
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- Compressport R2 v2 calf sleeves: My calf sleeves of choice. I use them.
- Cellucor C4: My pre-workout before hard sessions.
- TPU tubes: Schwalbe Aerothan, Tubolito and Pirelli SmarTube. Light, tiny spares. I use all three.
- G8 insoles: Adjustable insoles that are good. I use them.
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Watches and sensors
- Polar H10: My daily driver for waking HRV.
- Polar Verity Sense: My backup arm-worn HR sensor.
- Nomad bedside charger: Charges my iPhone and Apple Watch overnight. I use it, and many of their bands.
- Train.Red: The best muscle oxygen sensor I’ve used.
- Tymewear: Accurate heart rate and reliable ventilatory zones. I use it to pace endurance rides over an hour.
- Garmin Forerunner 970: A pro-grade triathlon watch. I use this.
- Apple Watch Ultra 4: My daily smartwatch. No phone needed on rides.
- Garmin Fenix 9 Pro: I’ve just bought one.
On the bike
- Continental GP5000 for everyday riding, and Aero 111 on the front for special occasions.
- Helmets: Specialized S-Works Evade 3 for road riding, and Rudy Project Wing for TT-style races. I use both.
- Ravemen FR300: A front light that mounts under your Garmin or Wahoo. I use one.
- Wahoo TRACKR Radar: I use it on one bike and Varia on the other. They perform the same.
- Garmin Varia RTL515: Radar that warns you of cars from behind. I use this model.
- Wahoo ELEMNT Roam 3: The bike computer that’s easy to use. I use mine on most rides.
- Favero Assioma Pro RS2: Accurate power pedals that swap easily between bikes. I use this model.
Home and indoor training
- NPE Runn: Makes my basic treadmill smart, sending more accurate speed and distance to my watch and Zwift. I use it.
- Google Wifi: Keeps Zwift connected in my pain cave. I use it.
- Apple TV 4K: Zwift on the big screen. I use two.
- Google Nest Doorbell (wired, 2nd gen): My video doorbell, running in both Google Home and Apple Home. I use it.
Health, recovery and sleep
- FreeStyle Libre 3 Plus: Shows how my blood sugar responds to diet.
- hDrop: Measures my sweat loss in summer and indoors.
- Fourth Frontier Zone: Checks my heart under load in hard sessions.
- Oura Ring 5: My partner’s recovery tracker of choice.
- Kineon MOVE+: Red light therapy for niggles. It works.
- Eight Sleep: A cooling mattress cover my partner and I use nightly.
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tfk is the founder and author of the5krunner, an independent endurance sports technology publication. With 20 years of hands-on testing of GPS watches and wearables, and competing in triathlons at an international age-group level, tfk provides in-depth expert analysis of fitness technology for serious athletes and endurance sport competitors. ID
