if you use it as a batch file you can easily add the route

@echo off
@(color 6A) & (@Title %title%)
@echo please wait...

::# Define a temp variable 'DefaultGateway '
@For /f "tokens=3" %%* in (
'route.exe print ^|findstr "\<0.0.0.0\ >"'
) Do @Set "DefaultGateway =%%*"

::# Redirect output to a textfile
route add [Destination IP] mask...