|Via:||Muff, Quigley's Point|
|Met:||T73, T73, T73, L79A|
|Now part of:||R239, R240, R242, unclassified|
Crossed the Inishowen Peninsula from Burnpoint to Muff, then again - after a multiplex with the T73 - from Carrowkeel to Carndonagh, then multiplexed with the T73 again to Trawbreaga Bay. From here used what is currently R242, and/or more direct unclassified routes (the route changing with time) to Garvan Island near Ballygorman.