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UK Half Marathon Races Calendar 2025 - 2026
















About Half Marathons

Above is our list of upcoming half marathons in the UK. There are a wide variety of races from smooth tarmac to rough trail and every elevation you could want. Half marathons are very popular races, which attract tens of thousands of runners across the UK. They are a large but manageable next step up in effort after running a 10k, yet it does not need the many extra hours of training needed to complete a full marathon. The jump from 10km to a half marathon is defintely an easier jump than the one from half marathon to marathon. That said half marathons form the perfect training ground for those looking to run the full 26.2 mile distance.

Training for a spring or autumn marathon? See the key marathon months on our UK marathons calendar.

According to the state of running report by runrepeat and the IAAF, 5 kilometre and half marathon races are the most popular running distances with around 30% of all participants running the 13.1 mile distance. The average age for running a half marathon is 39.

How long is a half marathon in km?

The 13.1 mile half marathon distance is equal to 21km or to be more exact 21.0975 kilometres. The accurate figure for miles is 13 miles and 192.5 yards.

Good luck with your chosen event whichever it maybe! Many events are still going ahead and organisers have put into place excellent Covid-19 procedures to make sure the events are as safe as they can be. Follow us on Twitter @racelists for some running inspiration.

Race Assistant