The eighth annual road race to benefit Louisa May Alcott’s Orchard House will be held Sunday, with the event offering 5K and 10K routes for runners and a 5K for walkers. Registration at the Alcott Elementary School starts at 10:30 a.m.; the starter’s horn will sound at noon. Uta Pippig, a three-time Boston Marathon winner and two-time Olympian who serves as the event’s honorary chairwoman, is expected to attend. For more information, visit www.louisamayalcott.org. Full story for BostonGlobe.com subscribers.