I don't think its possible to estimate that because Strava can't know beforehand how many activities happened on this segment and can't foresay the server load in the next hours or days. A notification as soon as all the segment efforts are complete would be nice though.

Makes sense, Jan. That ETA is a nice-to-have, but could still have a message saying "In progress…" or something to that effect. 

Yes, that message would be good

Hello @swissguy 

Thanks for this post. Suggestions such as this one that are relatively small improvements to existing features will be moved to our Features Chat Board and tagged as Product Feedback, where they will still be reviewed and discussed by our Team.

Thank you again.