The Breffní High Nelly Club - each year do a cycle from Munterconnaught to and through the towns of Virginia, Ballyjamesduff and Oldcastle.
Over 40 people will take off on their original high Nelly bikes.
Each year a number of local charities are chosen to raise funds for and bucket collectors will be in each town on the day.
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The fundraiser is taking place tomorrow and Rodney Dolan joined Ronan Gargan to tell him all about it.
