Storage space used

Very happy with app functionality. I have been using it for more than 4 years. I think I will have more than 600 rides stored. I understand that the folder in which the data is stored is private to the app. Approx how many MB/GB will be in use for the data associated with the rides? Is there a way of deleting old data other than each entry individually?
Many thanks
Mike

Hi.
When you login to your Google Drive account on web and click on Settings → Manage apps and then you can see how much data app takes.
Do you mean deleting data in app or Google Drive?