A 4-mile road race to celebrate Independence Day and raise money for 11-year-old Dedham resident Sally Naser, who was diagnosed with osteosarcoma, will be held Wednesday at 9 a.m. starting at the American Legion Post 18, 155 Eastern Ave. The race costs $20 and is being organized by the Thirsty Irish Runners Club. For more information or to register for the event, visit www.july4throadrace.com.