Mae Urien, Gareth a Heledd am ymgeisio i redeg hanner marathon Sir Fon er mwyn casglu arian ar gyfer Ambiwlans Awyr Cymru ac i gofio merch, chwaer a ffrind anhygoel - Mared Elfyn. Byddwn yn gwerthfawrogi unrhyw gyfraniadau. Diolch o galon..

Urien Gareth and Heledd will be attempting to run the Anglesey Half marathon to raise money towards Welsh Air Ambulance and in remembrance to an amazing daughter, sister and friend - Mared Elfyn. Thank you for your support and donations.