Welcome to the official mobile app of Grandma's Marathon Weekend, June 21-22, 2024. Use the app to track your favorite runners in the Marathon and Half Marathon and for all event details, race information, course maps and key updates to keep you informed for the 2024 Grandma's Marathon weekend! Started by a local group of runners in 1977, Grandma’s Marathon has grown from just 150 participants its first year to now one of the largest marathons in the United States. Widely regarded as a world c