The 18th annual Honolulu AIDS walk will take place Sunday in Waikiki.

Some 4,000 people are expected to participate in the walk, which begins at 9 a.m. at Kapi'olani Park. Registration starts at 8 a.m. at the park's bandstand.

There is no entry fee, but participants are asked to get sponsorships from their friends and family. A free trolley to the event will run between Kapi'olani Park and Kapi'olani Community College.

Following the walk, there will be entertainment, a health fair and food. The event is a benefit for the Life Foundation, which provides services for people living with HIV/AIDS and free HIV testing.

For more information, go to www.honoluluaidswalk.org.