Air Guard Championship at Bayfair
|Country||United States, San Diego, California|
|Most recent champion(s)||2010: Spirit of Qatar- Dave Villwock|
|Official website||Air Guard Championship at Bayfair website|
The Air Guard Championship or Bayfair Cup, is a hydroplane boat race in the H1 Unlimited season. The race is held on Mission Bay in San Diego, California, USA. The race is the main attraction of the annual San Diego Bayfair festival in mid September.