Uk Half Marathons 2025. 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. Whether you’re aiming to run a fast time, looking for your next running challenge, or want to race a half as practice for a spring or autumn marathon, these are some of the best british and irish.
Read reviews and recommendations to help you find your perfect event. Our updated list features 580 exciting races across the country, perfect for runners of all levels.