The B373 is a short road through the suburbs of Weybridge.
It starts at a roundabout on the A317 to the east of Weybridge town centre. The priorities on the roundabout are such that traffic going round the roundabout has to give way to traffic arriving from the town centre. The town's war memorial is situated on this roundabout; the soldier on the memorial has his back to the B373.
The B373 continues roughly southwards for over half a mile along the suburban Hanger Hill, which slopes gently downwards. The road ends at another roundabout on the B374, where again roundabout traffic has to give way to traffic coming from the south. Weybridge railway station is straight ahead.