Several ancient trackways run  across the community.
Heol-y-Milwyr (The Soldiers' Way) ran from Merthyr Mawr to St Brides Major via Ogmore Castle and Croes Antoni.
The Heol-y-mynydd goes up onto the downs via a valley called Pant Mari Flanders, which also has a medieval well.
Other trackways, Heol-y-slough and Heol Las also cross the downs.

The Vale of Glamorgan Line railway runs through the northern edge of the community, travelling between Cardiff and Bridgend.
The line opened in 1897, with Southerndown Road station at Croes Cwta, east of Castle-upon-Alun (51.4609°N 3.5603°W, SS917747) The station closed in 1961, and the line itself closed to passenger traffic in 1964, but resumed a passenger service in 2005, although the station did not re-open.

Three long-distance footpaths cross the community.

The South Wales and Severn Estuary section of the Wales Coast Path runs for some 6 kilometres (3.7 mi) from Ogmore Castle to the community boundary south of Trwyn y Witch, taking in the length of the Southerndown Coast SSSI.

The Valeways Millennium Heritage Trail includes a section of the coast path, and also takes in the village of St Brides Major and Castle-upon-Alun, crossing the Alun via the Clapper bridge.

The 13 kilometres (8.1 mi) Bridgend Circular Walk enters the community (if travelling clockwise) over the Stepsau Duon stepping stones, and takes a route over the Downs, descending along Heol-y-Milwyr to Ogmore.
Several ancient trackways run  across the community. Heol-y-Milwyr (The Soldiers' Way) ran from Merthyr Mawr to St Brides Major via Ogmore Castle and Croes Antoni. The Heol-y-mynydd goes up onto the downs via a valley called Pant Mari Flanders, which also has a medieval well. Other trackways, Heol-y-slough and Heol Las also cross the downs.
The Vale of Glamorgan Line railway runs through the northern edge of the community, travelling between Cardiff and Bridgend. The line opened in 1897, with Southerndown Road station at Croes Cwta, east of Castle-upon-Alun (51.4609°N 3.5603°W, SS917747) The station closed in 1961, and the line itself closed to passenger traffic in 1964, but resumed a passenger service in 2005, although the station did not re-open.
Three long-distance footpaths cross the community.
The South Wales and Severn Estuary section of the Wales Coast Path runs for some 6 kilometres (3.7 mi) from Ogmore Castle to the community boundary south of Trwyn y Witch, taking in the length of the Southerndown Coast SSSI.
The Valeways Millennium Heritage Trail includes a section of the coast path, and also takes in the village of St Brides Major and Castle-upon-Alun, crossing the Alun via the Clapper bridge.
The 13 kilometres (8.1 mi) Bridgend Circular Walk enters the community (if travelling clockwise) over the Stepsau Duon stepping stones, and takes a route over the Downs, descending along Heol-y-Milwyr to Ogmore.
St Brides Major (community)