>A1 Grand Prix (A1GP) was a 'single make' open-wheel auto racing series.
It was unique in its field in that competitors solely represented their nation
as opposed to themselves or a team, the usual format in most formula racing series. <

How about an sailing A1GP format?
A thousand mile race with a minimum of ten sailors per team/city or state,
where each team member sails a maximum of two days or each pair sails approximately 200 miles.
Ft. Walton vs Daytona vs Cocoa Beach vs Miami vs New Jersey vs Long Beach vs Pensacola vs Tampa vs Sidney