The collision with a car happened around 02:50 this morning.
A cyclist has suffered serious injuries following a crash with a car near Maesteg in the early hours of this morning.
The collision which involved a Vauxhall Corsa happened at around 02:50 on the A4063 between Llangynwyd and Coytrahen.
The cyclist was taken to the Princess of Wales hospital.
The driver of the vehicle is helping police with their inquiries.
The road is currently closed for officers to carry out investigation work.
Police are appealing for witnesses to the collision or anyone who may have sighted the pedal cyclist or vehicle in the area prior to the incident.
Anyone with information is requested to contact 101 and quote reference number 1900275864