Its source is located near the Odeon cinema at the eastern edge of Thornbury.

The stream crosses the grounds of Phoenix Park Golf Course between Farsley and Thornbury.

A longer source arm which originates near 53°47′42″N 1°42′45″W / 53.79500°N 1.71250°W / 53.79500; -1.71250 runs along the southern edge of the golf course, immediately north of the railway between Bradford and Leeds.

Then Tyersal Beck turns nearly south, skirting the edge of Upper Moor,[1] and runs along the valley between Tyersal and the western edge of Pudsey town, where it passes through the embankment of the former Pudsey loop line railway in a culvert.

[3] After joining with Carr Beck, it describes a wide arc and, while meandering at the bottom of a wide valley, turns east towards the southern edge of Fulneck Golf Course where it is joined by Holme Beck.