The B6190 is an urban B-road to the west of Oldham town centre.
The route starts in the Butler Green area of Chadderton at a mini-roundabout junction with the B6189, where that road turns from Coalshaw Green Road into Butler Green. Our road heads northeast along the residential Wash Brook and soon goes under the Metrolink Oldham and Rochdale line.
The road continues along Block Lane towards the tower of Christ Church, Chadderton, and on reaching the church turns left at a mini-roundabout; the road ahead is the B6191. Continuing north along Block Lane, the road goes under the Metrolink again by the Freehold stop before turning right into Lansdowne Road at another mini-roundabout by the Dog Inn.
After meeting the B6192 the road swings north again to follow Lansdowne Road to its terminus at a T-junction on the A669 Middleton Road.