What age do most olympic gymnists start training?

There is no maximum age for swimming in the Olympics, however, certainly the younger one is the faster they can swim as a general rule. The 2008 U.S. Olympic swimming team's oldest member is 41 year old Dara Torres who won the national competition in the 100 meter freestyle. The 2008 Games will be Torres fifth ... she has won 4 gold, 1 silver, and 4 bronze in the 1984, 1988, 1992, and 2000 Games.