SAN FRANCISCO (KCBS RADIO) - This Sunday marks the final California AIDS/LifeCycle ride. The fundraiser is a multi-day, 545 mile bicycle ride along the California coast from San Francisco to Los Angeles to raise money for AIDS research and services. Over the past 30 years, it has raised more than $300 million for the San Francisco AIDS Foundation and the Los Angeles LGBT Center. However, the ride's organizers say it has become too expensive to put on and not enough people are taking part.