ByRoute 16 links the M3 Motorway Junction 7 northwest of DUBLIN with Dromore West(Co. Sligo) on ByRoute 1 via:

In Co. Meath & Co. Westmeath –

Blundelstown // Bellinter, Ardsallagh & Kilcarn;

Boyerstown, Bohermeen / Ardbraccan & Cortown;

Fordstown & Girley, Drewstown, Kilskeer & Crossakiel;

Loughcrew;

Oldcastle & Moylagh, Ballinacree;

Mullaghmeen, Finnea;

In Co. Longford –

Abbeylara,

Granard, Clonfin,

 Clonbroney & Ballinalee, Killoe,

Longford Town; 

Newtownforbes, Cloondara;

In Co. Roscommon –

Termonbarry, Strokestown, Clooneyquin,

Tulsk & Rathcroghan, 

Castleplunkett, Ballintubber, 

Castlerea,

Loughglynn & Gortaganny, Kiltullagh / Balllinlough;

In Co. Mayo –

Ballyhaunis, Beckan, Aghamore & Rath;

Knock,

Kiltamagh, 

Bohola, Meelick,

Swinford, Killasser & Callow, 

Attymas, Bonniconlon / Bunniconnelan.

In Co. Sligo –

Largan, Masshill, Lough Easkey.