The countdown is on to the return of one of Wales’s biggest summer sporting events, with the Mizuno Swansea Half Marathon set to take over the Swansea coastline on Sunday 7 June.
Now in its 12th year, the race has rapidly grown from a 2014 start-up into one of Britain’s most popular half marathon events — and organisers say the 2026 edition is set to be the biggest yet.
Record numbers and a national championship
Organisers Front Runner Events say this year’s race will see record participation levels, with the event having now sold out.
This year’s race will also host the Masters International Road Championships, welcoming 216 Masters Athletes from Wales, England, Northern Ireland and the UK Armed Forces team — a significant national event hosted alongside the main half marathon.
Race Director Tash Smith said the half marathon had become a celebration of Swansea itself, pointing to the city’s energy, community spirit and coastal scenery as central to the race’s growing reputation.
Welsh rugby legends among the runners
Among the thousands of runners taking on the 13.1-mile coastal route will be Welsh rugby greats Shane Williams and Ian Gough — both raising funds for Ospreys in the Community, the regional rugby side’s charitable arm.
The pair will be joined by teams of runners raising money for headline charity partner Shelter Cymru, which works to end homelessness in Wales, alongside Maggie’s Swansea, Morgan’s Army and Cancer Research Wales.
Over the years, the race has helped raise millions of pounds for charitable causes, with organisers describing the event as much more than a race — a celebration of community, resilience and supporting good causes.
A city-wide festival atmosphere
The 2026 event will once again feature a wider race-day experience designed to bring the city centre and Swansea Bay alive.
Live music and entertainment zones will be set up along the course, with cheer stations from community groups, sports clubs and charities at key points around the route. A Family Fun Run with mascots from Freedom Leisure, a vibrant event village, and a “warm Welsh welcome” at the village of Mumbles are all part of the day.
The race is expected to deliver significant economic impact for the city, with hotels, restaurants, cafés and local businesses set to benefit from a major influx of visitors during race weekend.
Sponsors behind the start line
The event is supported by headline sponsor Mizuno, the global sportswear brand. Matthews & Co Chartered Accountants are sponsoring the Corporate Challenge — a contest between local businesses for the title of fastest team.
Brecon Carreg are returning as official hydration partners, while Gravells will provide the electric pace car leading the route, with traffic management run by Core Highways.
Sold out — but charity places remain
With demand for UK half marathons running at record highs, general entry to this year’s event has sold out.
However, runners who still want to take part can do so by signing up to run for one of the race’s official charity partners, with places still available.
New 2027 date confirmed
For runners already looking ahead, organisers have confirmed the 2027 event will move from its traditional June slot to Sunday 21 March 2027 — repositioning the race as a spring half marathon.
Early bird entry is now open at £35, with organisers warning that limited places at the discount price are expected to sell quickly.
Full information on road closures, spectator points, race-day timings and other key information is available in the official Race Day Guide on the Swansea Half Marathon website.
