R285 road
Bóthar R285
R285 road, on leaving the N4
Route information
Length	16 km (9.9 mi)
Location
Country	Ireland
Primary destinations	County Roscommon N4 – Starts 5 km east of Boyle Knockvicar – (R290) Crosses the Boyle River Keadue – joins/leaves R284 Mountallen – terminates at the R280
Highway system
Roads in Ireland Motorways Primary Secondary Regional

The R285 road is a regional road in Ireland linking the N4 at a point east of Boyle, County Roscommon to the R280 at Mountallen. The road lies entirely within County Roscommon.

En route it passes through Knockvicar and Keadue. The road is 16 km (9.9 mi) long.