The 12th lock in Castleknock is close to the M50, exit N6. Follow the sign "Blanchardstown Village" and turn left towards "the twelfth lock" and "Brady's". There is a car park beside lock.
N3 direction Navan-Cavan from Dublin City Centre
A1/N1/M1/M50 from Belfast
N11/M11/M50 from Rosslare, Dun Laoghaire
Map: for more details click on 12th lock on the main map
Thomastown is on the Kinnegad to Killucan road (5 kms from Kinnegad).
M4/N4 from Dublin (60 kms)
A1/N52 from Belfast (160 kms)
N11/N80/N52/N4 from Rosslare (175 kms)
Map: for more details click on Thomastown Harbour on the main map