SWIMMING 21 miles - the equivalent of a channel crossing - even in instalments over six months, is a daunting prospect.
But when you are living with limited mobility from the waist down, the task becomes almost superhuman.
That however, is the challenge 10-year-olds, Oliver Dickey and Ethan Pollock have set for themselves.
And in the process they hope to raise thousands for a charity.
Oliver has cerebral palsy and Ethan lives with spina bifida but, in the pool, limitations resulting from their disabilities are much reduced.
And so they hit upon an 'English Channel-length' swim to raise funds for a cause they've both benefited from in the past - the NI Children to Lapland Charity.
*Read the full story inside this week's Chronicle, which is available to buy today.