There’s a new addition to the LifeMap Beta!
You can now filter the displayed activities based on a start/end date.
The LifeMap beta is at https://citystrides.com/users/YOUR_USER_ID/map_beta (it’s the LifeMap URL with _beta added).
Click through and zoom way in, zoom way out, drag around and filter 
… Let me know here if/how it works for you.