HONOLULU (HawaiiNewsNow) - The first runners crossed the finish line at Aloha Stadium before 8 a.m. for the 2015 Great Aloha Run on Monday. Craig Leon of Eugene, Ore. came in first at 40:27, followed by Kailua native Makai Clemons at 43:32. Up to 24,000 walkers and runners took part in the 8.15-mile race that started at 7 a.m. at Aloha Tower, winding its way down Nimitz Highway, Kamehameha Highway and on to Aloha Stadium.Honolulu police closed most downtown streets to vehicular traffic just before 4 a.m., including Nuuanu to Punchbowl and from Beretania to Nimitz Highway.More than 21,000 participants took place in last year's Great Aloha Run.The Great Aloha Run has been recognized as one of the top \100 Great Road Races\ by Runner's World Magazine. Over the past 30 years, Hawaii's largest participatory race has raised over $10 million for more than 150 non-profit health and human service organizations and community groups throughout Hawaii.GAR has divisions for elites, age groups, military runners, wheelchair and handcycle competitors and those who just want to walk the course with friends and socialize along the way in the Back of the Pack.For the fourth year in a row, Hawaii firefighters ran together to help raise money for the Kapiolani Medical Center for Women and Children's oncology program. Maui firefighter Joshua Dukes and his wife Shauna ran in honor of their 20-month-old son, Trucker, who is suffering from neuroblastoma, an aggressive cancer.