Hello,

Thanks for your post.  We don't offer the ability to make any bulk changes to routes (including private to public) on Strava.

You could consider sharing the idea to our Feature Suggestion board, so that others can also vote on it. We kindly ask that you review our Feature Suggestions guidelines, particularly the “What makes a good idea” section, to ensure that your ideas are clear, concise, and can reach as many others as possible.

Thank you for your contribution, we value your input.