The B775 is a largely rural B-road running south from Paisley.
It starts at traffic lights on the A761 (former B772) in the centre of town. On the far side of the A761 the B7050 heads north round the western side of the town centre to reach the A726; there's a chance that road is actually a northern extension of the B775; see the B7050 page for more details.
The B775 heads south along Maxwellton Street and soon bears left at traffic lights to pass the Royal Alexandra Hospital. It continues along residential roads, soon bearing left to reach a T-junction where it TOTSOs right. The road passes Stanley Reservoir and reaches open country.
The road climbs steeply into the Gleniffer Braes. It passes a car park and levels out and crosses the moors on a dead-straight section of road, straighter in fact than the administrative boundary between Renfrewshire and East Renfrewshire, which is crossed three times on this section. After a couple of miles the road bends sharply to the left then right before continuing in a more winding fashion than before. The road descends and crosses the B776 before skirting the grounds of Caldwell House. It ends shortly afterwards at a T-junction on the B777 to the north of Lugton.