Connecting GND planes on PCB
Since you have a 2 layer board, add a Gnd plane to the bottom layer and connect both pads using Vias to the Gnd plane.

In my designs, I make everything that is not a trace or a component pad part of the Gnd planes on the top &amp; bottom layers, and let them connect by either moving traces a little to let Gnd plane connect by themselves, or by adding vias to connect the various islands that are left after routing is done.