A woman will set off on a four-year 20,000-mile (32,000km) trek around the coastline of the UK.
Karen Penny has been sleeping in her back garden and walking daily to prepare for the mammoth challenge.
The 53-year-old will take a lightweight tent but her backpack will weigh about 17kg (37lb) as she carries essentials such as a sleeping bag, water, clothing and protein bars.
“I know I can take it in my stride,” said the mother-of-one from Swansea.
Ms Penny, who walked from John O’Groats to Land’s End last year believes she will become the first woman to complete the coastline walk continuously.
Meet Alex Ellis-Roswell, the man who is walking 6,500 miles around the entire British coastline to raise money for a charity that saves lives at sea
How many miles is it around the coast of Great Britain?
Ignore Ireland in this picture as the walk does not include it.
The coastline as measured by the standard method at the Mean Sea Level Water Mark the distance is 19,491 miles (31,368 km) this includes the larger Islands off the coast of Britain. Mainland Britain is still just short of 9000 miles around the coast at Sea Level. To put this in to perspective, NASA and main stream science claim it is just 25000 miles around the world.
Maps of UK Beaches. https://www.theguardian.com/news/datablog/2012/may/03/uk-beaches-rank-map-listed
Barmouth Beach Wales some 15 miles of flat, level sands.
Barmouth Beach with Pwllheli on the horizon.
Barmouth where on a clear day we can see the Isle of Man some 33 miles away, and if we zoom using a camera we can see the shore line at Sea Level.
The World’s Longest Beaches as measured at Sea Level
Praia do Cassino Beach, Brazil
Reaching around 150 miles in length, the world’s longest beach is the Praia do Cassino Beach in Brazil. This beach is not only long but beautiful, known for its white sand and hospitable locals. At this beach you won’t miss warm temperatures, as it remains hot for most of the year. Beach-goers are able to enjoy plenty of water activities if they do not only want to relax. Praia do Cassino is Portuguese for Casino Beach and while you walk from the Rio Grande seaport to the border with Uruguay you may have enough time to think about the naming.
Ninety Mile Beach, Australia
Located in the Gippsland region on Victoria’s south-eastern coastline you will find one of the longest uninterrupted beaches in the world. How long will this one be? Yeah, you are right! It is 90 miles long! The beach is one of the most natural and unspoilt ones and ideal for activities such as fishing, swimming, dolphin-spotting, sunbathing or just walking. The area is a perfect holiday environment with enough time to relax with your foots sinking into the wet sand leaving your footprints to one of the world’s longest beaches.
Padre Island National Seashore, United States
This beach spreads over a length of 70 miles making it fourth in the line of the world’s longest beaches. It separates the Gulf of Mexico from the Laguna Madre. The beach is located at a park and you will be offered countless opportunities to discover and enjoy the amazing area. You may walk down the beach until there is no civilization anymore and camp there right under the stars!