You can either take the metro or cycle.
If you are taking the Metro, it's free if you have
Remember, you have to pay for a bike if you bring it to the Metro.
But, like the Danes, take your bike.
It is a great trip there, for example, through Nyhavn over the new cycle bridge through the Freetown of Christiania.
When you come out of Christiania you will see the Kløvermarken, very large area with football courts.
Continue to Prague Boulevard and down the small path at Amagerbanen. It is a former railway, which is now a bike path.
Immediately afterwards you can see the beach, enjoy a swim in the hot water!!