How many miles from birr co offaly to belfast?

300 km (186 miles) taking this route:

1. Take A52 TULLAMORE, from Birr, to M6 DUBLIN, beyond Tullamore.
2. Take M6 to M4 DUBLIN.
3. Take M4 (and N4) to M50 NORTHBOUND (toll) at J1 off N4, near Dublin.
4. Take M50 NORTHBOUND, around DUBLIN (via the West-Link TOLL BRIDGE), to M1 DUBLIN at J3.
5. Take M1 (and N1, past Dundalk) to NORTHERN Ireland, where the road continues as A1.
6. Take A1 to M1 BELFAST.
7. Take M1 to Belfast.