Experience stunning scenery, culture and sport at the Blenheim Palace Triathlon, taking place in 2024. This iconic weekend of movement offers both beginner-friendly and advanced challenges, set in the grounds of a UNESCO world heritage site. Blenheim Palace Triathlon is a full weekend experience with a host of different challenges available. It's also a perfect family day out; see the historic palace, enjoy the stunning grounds and cheer the triumphant triathletes on.