Topo Maps+ supports importing routes and waypoints from KML and GPX files. To import the data into Topo Maps+ email yourself the file, then on your iPhone find the email, select the file, tap on the share button, and then select Topo Maps+.
When Topo Maps+ opens it will show you the routes and waypoints from the file. You can choose which ones you want to import and then tap on the import button.
