I have copied this from the Relay for Life homepage, so you can find out what Relay for Life means:
Teams of people from all walks of life have fun while raising much-needed funds to fight cancer and raise awareness of cancer prevention and treatment.
"Relay For Life is the American Cancer Society’s signature activity. It offers everyone in a community an opportunity to participate in the fight against cancer. Teams of people camp out at a local high school, park, or fairground and take turns walking or running around a track or path. Each team is asked to have a representative on the track at all times during the event. Relays are an overnight event, up to 24 hours in length.
Relay For Life is a life-changing event that brings together more than 3.5 million people to:
• Celebrate the lives of those who have battled cancer. The strength of survivors inspires others to continue to fight.
• Remember loved ones lost to the disease. At Relay, people who have walked alongside people battling cancer can grieve and find healing.
• Fight Back. We Relay because we have been touched by cancer and desperately want to put an end to the disease.
There is not a required amount of money to raise in order to participate in Relay For Life. The American Cancer Society's recommendation is for each participant to set a personal goal to raise $100. If you raise more, that's even better. If you do not raise $100, you are still welcome to participate. We're glad to have you. The only requirement to participate in Relay For Life is the $10 registration/commitment fee that is due upon registration. After that, anything you can raise through individual, team, or online fundraising is graciously accepted."