The path is a continuous trail, allowing walkers to explore the country’s shoreline on foot.
Natural England, the government body which created it, said it is the longest managed coastal walking route in the world.
But land slips and erosion have led to parts of the trail being rerouted or closed for safety reasons in the south west and along Dorset’s Jurassic coast.
Natural England’s Neil Constable said it would be “challenging” to keep the whole route open, but that there was more flexibility to amend the route of the King’s path than a standard public footpath.
“Public footpaths follow very fixed legal lines. If it falls in the sea, it’s gone,” he said.
“We’ve got to start from scratch negotiating [with landowners]. But going forward, if that path falls in the sea, the right remains, and we can, talking to the landowner, find a new route for the path that strikes a fair balance.”