Cross-Balaton Swim Contest. In 2007 it will be held on 21 July, 2007 (Saturday). But can be cancelled in case of bad weather, so better check weather forecasts in advance.
Relaxing in thermal spas.
Sailing. There are several annual sailing races for those prefering competition.
Swim. There are many places to go down waterslides and just take in a bit of shallow bathing, but be aware that the shallow banks of Balaton are very murky. You can scarce avoid getting silt everywhere.
Buy wine of course!!!
One kind of local food is lángos, a bread-like pastry usually sold on beaches. It is offered with different toppings like cheese, sour cream, and ham, or often plain just with garlic-sauce on top.
You can also try a special Lake Balaton fish called fogas (pike-perch), served roasted.
The hills north from Balaton are know for their wine. The best you can do is going for a wine spotting tour.