THAME and Chinnor Friends of the Earth are serious about people getting on their cycles.
The main feature of its annual Green Fair is a bike exchange when people take unwanted or outgrown cycles to the fair and leave with another model.
The Friends take £5 a cycle and the rest goes to the seller.
People can take cycles to the fair - being held on Saturday between 10am and 4pm - before things start so the cycles can be put in the pound.
The cycles have to be labelled with name, address and asking price - and must be in good working order. This year's fair also has local crafts and Fairtrade stalls, children's games and activities, and folk band Bodger's Wood.
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