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Rich ar Ras
Yr actorion Richard Harrington a Mark Lewis Jones sy'n rhedeg Marathon des Sables yn y Sahara. Actors Richard Harrington and Mark Lewis Jones run the Marathon des Sables in the Sahara.
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’Dyw’r rhaglen yma ddim ar gael ar ÃÛÑ¿´«Ã½ iPlayer ar hyn o bryd