The Syfydrin Trail (black severe grade, 21.7 miles, 35 kilometres).
Time 3 - 5 hours
This trail is an epic ride in epic countryside. This trail takes in the entire existing Summit trail with its fantastic swooping, flowing singletrack, and adds to it by leading you out onto the high open hills with stunning views. It is a long and challenging ride in exposed and remote countryside, so go equipped for any eventuality.
More information in relation to whether or not this is suitable for you and where you can get training can be found on the Natural Resources Wales website.