Your running stride length is shown in the Stryd mobile app. You can find this information by:
Open the Stryd mobile app
Select a run from the Calendar
Select the button icon with three horizontal lines
Select view full screen
From here you can select the stride length
Click on the part of your run where you wish to view the stride length of
You can also view stride length in the Stryd PowerCenter
Open Stryd PowerCenter
Select the Calendar
Select the run
Select stride length from the list of metrics