A Derbyshire runner is hoping to become the fastest female ever to run the length of Ireland.
Jen Salter, from Breaston, aims to beat the current record of seven days, nine hours and 36 minutes when she begins the 345-mile (555km) run on Sunday.
The 36-year-old, who organises and competes in extreme marathons, will attempt to cover 60 miles (96km) a day.
Her world record bid will start at Malin Head in the north and finish at Mizen Head in the south.
Ms Salter said: "I'm a bit scared but also excited and itching to get started.
"I am under no illusion that this is my toughest challenge to date but hopefully I can inspire other women to go out and chase their ambitions."
Ms Salter has been preparing for the bid by completing four 60-mile runs a week.
She said: "In training I've had to focus on long distance and forget about speed, which is hard because that's what I really like.
"It's about having breaks and making sure you've got enough food and drink.
"We're taking a really nice motor-home with us. It's just a shame I won't be able to spend much time on it."