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2027 Great Welsh Marathon
The Great Welsh Marathon 2027 is a flat, fast, scenic course on the South Wales coast, designed for first marathons and personal bests. The event moves to a brand-new course in Carmarthenshire for 2027, with the exact route confirmed closer to race day.
Run the South Wales coast in October, when the autumn light softens the views over the Loughor Estuary and the Gower Peninsula — a route that feels more like a seaside escape than a race. After the finish, wander Llanelli's Millennium Coastal Park or head into town for a proper Welsh breakfast (laverbread and cockles are the local specialty) before the crowds of summer have fully returned.
Event Details
110m
The course runs along the South Wales coast with views over the Loughor Estuary and the Gower Peninsula, on road and surfaced coastal path.
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