Google is sponsoring HTML5 hackthons in four US locations throughout August, 2011.

The hackathons will feature instructional sessions on how to use Google In-App Payments, how to publish to the Chrome Web Store, as well as other HTML5 topics such as audio, fonts and the canvas element. Teams will compete, vote on the best HTML5 app and win prizes.

Four hackathons have been announced:

August 1, 2011: New York
August 3, 2011: Chicago
August 8, 2011: Seattle
August 11, 2011: Mountain View

From the EventBrite description of the Mountain View hackathon:

The HTML5 Web App Hackathon is an event for developers to socialize, network, and learn.  During the hackathon, we’ll cover the end to end process of developing an HTML5 application, publicizing with Chrome Webstore and finally monetizing with In-App Payments.

…

After the presentation, you’ll have the opportunity to create teams and hack on something together or build on something that we’ll provide.  At the end of they day, teams and individuals will present what they’ve created and we’ll vote on the best app/game.  The winning team/individual will take home some awesome prize(s).

See: Mark your calendars: HTML5 hackathons on the Google Code blog

Related posts on HTML5 Grind:

• Google Will Host “Warp Zone,” HTML5 Game Jam at PAX Dev
• Mozilla’s World Series of Hack: July 21-22, Mountain View, CA, USA