[Mick]

For the very oldest, think domestic and aquatic.

Not the America's Cup (see above)?  I know it dates back to the 1850's, but I don't know the exact year.

BC

EDIT: America's Cup should be the right answer (based on wikipedia), unless Mick had something else in mind.

It is the America's Cup, and it dates to 1851.

[Mick]

For the very oldest, think domestic and aquatic.

Not the America's Cup (see above)?  I know it dates back to the 1850's, but I don't know the exact year.

BC

EDIT: America's Cup should be the right answer (based on wikipedia), unless Mick had something else in mind.

It is the America's Cup, and it dates to 1851.