You can link your calendar to Hurdlr, which allows you to choose a calendar event to set as a note for any of your trips. To do so:
Tap on the trip in the mobile app
Scroll down to the Notes section
Tap on the calendar icon in the Notes section
If you haven’t already done so, give Hurdlr permission to access your calendar
Choose which calendar event you want to link to that drive
The calendar event will be added as a note to your drive
Note: Your calendar itself would not reflect the mileage that you tag to it.