TEE Barter wanted to make sure that her sponsored fund-raising effort for charity was not too easy.
So on Sunday she and a friend did a 49-mile paddle in a canoe, taking 19 hours, starting and finishing in the dark.
Now checks are taking place to see if there are any records of anyone actually completing the two-legged gruelling trek in only one day.
“We wanted it to be hard and it certainly was,” said Mrs Barter, who works in Thurston Post Office and lives in Tostock.
“My shoulders and hands are still sore.”
She was accompanied in a double kayak by Fred Welham, who is coach at Sudbury Canoe Club, where she is a member.
Their effort has already raised £1,240 for Cancer Research, topping the initial £1,000 target, with more sponsorship still to come in. They sailed along the River Stour, starting at Cattawade, near Manningtree, inland to Sudbury and back again.
It was more difficult because even though they planned to start at 2.30am, they had to encounter fog too before it became daylight four hours later.
Tee’s husband Eliot drove along the route providing refreshments and support.