It is aimed at potential partners from the online sports and gaming industries.
Companies are being invited to tender for five licences offering a combination of live coverage of Racing UK's entire media portfolio and analysis and form supplied by the Racing Post.
The service will also enable customers to bet online.
Successful bidders will benefit from prominent branding on the new broadband service and can integrate video content into their existing websites.
The joint-venture follows a recent partnership between the Racing Post and Racing UK for a dedicated Grand National website earlier this month. In the nine days leading up to the Saturday race it recorded more than 2.4 million page impressions from over 157,000 unique users.
The site included analysis and form from the Racing Post alongside archive footage from previous races and live footage of the Grand National.
Racing UK is owned by 31 of the UK's premier racecourses and broadcasts live all races at these courses.
The parties have appointed Sportev, the leading wireless sports agency who also have contracts with the FA Premier League and England Rugby, to manage the bidding process.
