The Great Pet Rescue Rally is a fundraising event that benefits ten organizations throughout Maricopa County in Arizona that rescue and adopt out pets. This collaboration of ten welfare organizations in the greater Metropolitan Phoenix area makes this group the second largest shelter system in the United States (after Los Angeles), representing 100,000 animals each year. The work by these groups is important for rescue, adoption, advocacy, and community outreach.
 
Conducted completely online, the Great Pet Rescue Rally is eight months long, finishing May 31, 2010. There are 20 destinations in Arizona to “drive” to, with teams or individuals starting in Phoenix. Participants can go to the destinations in any order they choose and at any time of day or night. To “travel” you must raise money for gas. The more money you raise, the more places you can visit online.
 
Besides the opportunity to help dogs and cats who need homes, participants can win prizes, blog about their adventures on their own personal web page and see fantastic photos of the Grand Canyon State.