Swimmer Andy Joyce ploughed through the water at Witney's Windrush Leisure Centre as part of the BBC's Sports Relief.
Andy Joyce
The national event raised £11m on Saturday as 81,000 people took part.
Swimmers, runners and walkers accepted the challenge.
Duty manager Peter Bullock said dozens of people had taken part in a mile swim and a fitness test to raise money for under privileged children, while many more took part in mile-long walks around the town.
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