Run to Fight Children’s Cancer is the largest race in Arizona dedicated solely to pediatric cancer. The ninth annual event features a 10K run, 5K run/walk and a quarter-mile Cancer Survivors Walk. A post-race festival provides an afternoon of family fun: vendor expo, arts and crafts, jump castles, music and more. All proceeds go to Phoenix Children’s Hospital and Children’s Cancer Network. 7 a.m. 10K, 7:45 a.m. 5K run/walk, 9 a.m. Cancer Survivors Walk. $35-$50; free walk for cancer survivors. Grand Canyon University, 3300 W. Camelback Road, Phoenix. 602-234-3460 or runtofightcancer.com