Near Newcastle, the Tollymore Forest Park has trails and a downhill course open to mountain biking. To reach the trailhead from County Down, follow the signs into Newcastle. Then follow the signs to Tullymore. Use the top card park.
Start riding downhill to the right and pick up the path. Continue right along fire break. Keep right along path and across bridge. Pickup trail on left to start the major downhill ride.
Overall, Tollymore Forest Park is the 4th most popular mountain bike trail of all 14 mountain biking rides in Ireland.