[bytecodes]

I use it, and it's really clear you're sharing your location, speed, and heartrate data with Strava and other users. There is a Facebook-like newsfeed that shows where your friends have been working out. You can see who else runs your routes and how fast they are. Sharing this data is really the purpose of the app.

If you purposely disengaged from this social part of the app and were trying to use it as a simple stopwatch and mileage logger then uploading data may seem weird. But that's not the clearly intended purpose of the app.

[dawhizkid]

Yes, but you probably don't represent the average Strava user. Clearly there are many who are sharing publicly who don't realize it for some reason. Design, IMO, is part of the reason.

[TallGuyShort]

Strava overtly markets itself as a social network. It doesn't open with, "use me - I'm an app to help you track your workout plan", it opens with, "use me - I'll share your workouts with your friends." The sharing of data is the primary feature and it's right there in the title of their website. If you use the app and think sharing is an anti-pattern, I'm concerned about your presence near nuclear weapons for reasons other than privacy.

[drtillberg]

But the jogging routes were shared beyond any circle of "friends." It got shared with potential adversaries. Clear privacy fail by Strava.