Half Marathons Spring 2025. Santa barbara, ca santa barbara half. The 21.1km / 13.1 mile half marathon is a popular long distance running event that doesn't require the same training commitment that a full marathon does.
The 21.1km / 13.1 mile half marathon is a popular long distance running event that doesn’t require the same training commitment that a full marathon does. Half marathon guide is the largest calendar and educational resource in the world for half marathon runners and enthusiasts with over 10,000,000 annual visitors.