Uk Half Marathons 2025 Map. The biggest calendar of half marathons in the uk with 600+ event listings. 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.

The biggest calendar of half marathons in the uk with 600+ event listings. 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.