Park opposite the chapel and walk either way around Loe Pool. It's about six miles and a lovely walk through woodland where it can be muddly in winter, and across the sand bar. There's a cafe at The Stables which serves great coffee and cake (only open weekends during winter). Check the route map at the car park before you set off to ensure you know where you are going.
Loe Pool Round Walk Degibna Chapel HELSTON Cornwall TR12 7PR
We have found this to be a lovely walk though wellies are needed in the winter. Good for dogs as they are safe. It can be extended to take in Portleven with little effort