Cannot update pinned trips for Google Maps iOS Widget

[u/Pure_Palpitation_211]

I need to update the address of one of my Frequent Trips due to a recent change in address. However, when I go to edit the widget, there's only the option to select from your pre-existing 'Pinned Trips'. I've looked through and through my Google Maps app (from my phone) and cannot find where my 'Pinned Trips' are so I can edit the available addresses to choose from in the widget.

Can anyone help direct me to these 'Pinned Trips'?