Drannoeth Marathon Llundain, sut mae Gruffudd Glyn yn teimlo ar ôl yr holl redeg? Shân catches up with Gruffudd Glyn, one of the 2018 London Marathon runners. Show more
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Drannoeth Marathon Llundain, sut mae Gruffudd Glyn yn teimlo ar ôl yr holl redeg? Shân catches up with Gruffudd Glyn, one of the 2018 London Marathon runners. Show more