Splits (1km) Doesn't Stick

That’s normal. If no interval exists, you can’t split it :wink: It’s just a view on the entire activity without any intervals. Easiest way to make the whole activity one big interval is to create one interval, no matter where or how long, open the dialog and click on the left/right arrow icon to make the interval cover the complete activity.

You can do the same if you have multiple autodetect intervals, just open the dialog for one of them and click the same icon.

Also normal, you are editing only that one selected interval. make 1 big interval as per the instructions above.

In this case, you removed all intervals, so there’s nothing to split :wink:

I have made a topic in the Guide section that explains the difference between selections and intervals which also covers the different ways of editing/creating intervals.