The event which was run by Blues coaches and players, taking a break from their Guinness PRO12 preparations, and saw representatives from 75 grassroots rugby clubs take part.
"Everyone at Cardiff Blues is incredibly excited by the new partnership with Land Rover and what the next three years has in store," said chief executive Richard Holland.
"Land Rover has a renowned history in supporting rugby and its experience will be important in the continued development of the club and rugby in the region."
The three-year deal is the first time Land Rover has directly supported the game in Wales and is testament to its commitment to investing in rugby in the UK.
The partnership is the latest addition to the company's long standing support of rugby at all levels of the game; from grassroots to the elite.
Land Rover's was an official sponsor of the 2011 Rugby World Cup and a worldwide partner of the tournament in England last year and has supported six British & Irish Lions tours.
Jeremy Hicks, Managing Director of Jaguar Land Rover UK, said: "Today's announcement is not only an important addition to Land Rover's growing rugby sponsorship portfolio, but represents a significant increase in our investment within rugby in the UK.
"We are proud of our heritage in rugby and this partnership has offered us a fantastic opportunity to further strengthen our community links in Wales and engage our Land Rover retailers and owners who are also rugby fans.
We are excited by the club's ambitions for the future on and off the field, and look forward to the start of our partnership."
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