|Location Map ( geo)|
|Distance:||83.1 km (51.6 miles)|
|Meets:||R135, R101, R805, R102, N3, M3, R156, R157, R154, R155, R125, R161, R153, R161, R162, N51, R163, R941, R164, N52, N3|
|Route outline (key)|
The R147 follows the greater part of the old route of the N3 from Phibsborough in the city of Dublin to the current N3 at Derver, 9 km west-north-west of Kells in County Meath, via Dunshauglin and Navan.
In 2007, shortly before the R147 took over from this part of the N3, a new Grade Separated Junction was built to serve the Phoenix Park Racecourse development. As of 2020, the planned apartments haven't materialised, meaning the flyover only serves the new railway station.