You can adjust how sensitive you want your location timeline and map s to be to when your location changes. Here's how to adjust it:
On Timeline, click on the settings icon on the top right of the location summary tile.
Adjust the sensitivity based on your preferences.
Higher sensitivity means more dots on the map and potentially more unique bars so you can see the details of all your travel.
Lower sensitivity means fewer dots and fewer bars so you only highlight the main places you've visited.
Location accuracy is limited by device that is collecting the location, which may not report all location changes.