Cardiff Half Marathon

OCT
4
2026
Experience a flat and fast half marathon through the Welsh capital. Join one of the UK's most popular races featuring elite athletes, junior events, and incredible city spectator support.
Sun 4 Oct 2026
Half Marathon

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Cardiff Half Marathon

The Cardiff Half Marathon is a long-distance running event held in the Welsh capital. The event features a course described as flat and fast, circling major landmarks throughout the city. Known as one of the best-supported races in the United Kingdom, it attracts a large field of participants including international runners and elite athletes.

Participants can choose from several entry categories and associated activities:

  • Half Marathon
  • Cardiff Half Junior (Junior races for younger participants)
  • Business Challenge
  • Plogging (Combining jogging with picking up litter)

The event is part of the SuperHalfs series and is an IAAF-sanctioned race. It includes an Event Village and a Food Quarter for runners and spectators. Support services such as live tracking, streaming, and course entertainment are provided on race day. Accessibility options and disability entries are available to ensure the event is inclusive. Numerous charity partners, including the lead charity NSPCC, offer opportunities for participants to run for specific causes.

Run 4 Wales organizes the event with a focus on sustainability. The organizers provide training resources through a coaching app as well as guidance on hydration, nutrition, and medical safety. Visit the organization's website for the most recent information.

Half Marathon
Half Marathon
Cardiff Half Junior
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