Mansfield's former double Olympic champion Rebecca Adlington has confirmed she has no intention of competing in Brazil in 2016.
Adlington, who won double gold in Beijing but fell short of the top step of the podium at London 2012, may take part in the Commonwealth Games in Glasgow in two years' time.
The 23-year-old, who added bronze medals in the 800m and 400m freestyle in London to the golds she won in Beijing, is also considering swimming over a shorter distance in Glasgow.
"Rio is out of reach. I'll be 27 by then, and swimming, especially for distance swimmers, is a young person's game," Adlington said.
