Ottawa's annual race weekend has a new title sponsor after going three years without.

Ottawa-based home builder Tamarack Homes will be the new title sponsor, event officials announced Wednesday, signing a five-year contract. The last sponsor agreement with Dutch insurance company ING ended in 2008.

The seven-race weekend, which bills itself as Canada's largest running festival, attracted 40,000 runners last year.

Volunteer group Run Ottawa organizes it and often receives volunteer assistance from those working for the title sponsor.

“Having secured a title sponsor provides us with the long-term financial footing that will allow us to make the weekend even more enjoyable for our 40,000 runners,” said race director Jim Robinson.

“We can explore ways to grow the event, improve runner amenities and build on our already respected status with the local, national and international running community.”

The event will mark its 38th year in 2012 taking place May 26 and 27. The featured races are a marathon, half-marathon, kids marathon, plus 10-kilometre, five-kilometre and two-kilometre runs.