We are sisters (and middle-distance running athletes) from Hampshire who have left our smartphones behind to walk the 288 miles of Cornwall coast together in less than 25 days to raise money and mental health awareness.

We are embarking on an ultimate digital-detox journey tackling the Cornwall section of England's coastline - soon to launch as the world's longest continuous path - and have planned it all ourselves. We have all the camping equipment we need, a tracker app and a burner phone for emergencies. Our only luxury item is a wind-up radio, a few energy bars, and a pair of new hiking shoes.

We would love for you to help support us in our challenge both in terms of contributions (however big or small) and your comments of encouragement.

This photo was taken on the evening after our first full day of walking by a lovely local who offered to take it and send it by email because we are without smartphones! If you happen to be in Cornwall and we cross paths we would love you to do the same! :)