Top 9 UK triathlons for challenging open-water swims
From Cumbria to Snowdonia and the Firth of Forth, we check out the 9 toughest open water swims going at UK triathlons
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From Cumbria to Snowdonia and the Firth of Forth, we check out the 9 toughest open water swims going at UK triathlons
