The sarn helen trail goes from the north coast to the south coast of wales, I put the GPS route on this site http://www.mtbtrailfinder.co.uk/html/routes/special/special_main.htm
Im planning on following this route later this year with some alterations in the south where I know the terrain well. I shall be using a mixture of wild camping and campsites.
Is the gps route you uploaded based on the guide pack? I heard that much of the information in the guide pack is wrong/out of date? is this true? would welcome any information you have regarding the route, terrain etc.
cheers