The primary connection with the mainland, a car ferry line, is operated by Ornö Sjötrafik.

Each year by the end of may, the largest sailing competition in the Stockholm archipelago takes place around the island.

Tyresö boatclub which arranges the race, celebrated the 35th incarnation of the competition in 2008, with 183 boats participating.

Ornö has up until recently been a military protected area, with foreigners not being allowed on or near the island.

There are however still places where you are not allowed to step ashore, drop anchor, dive or take pictures.