Cotswold Big Swim Festival – September

The September 2026 Cotswold Big Swim Festival at Cleveland Lakes Nature Reserve offers open-water distances from 750m to 10km plus a 4x200m team relay in the Cotswold Water Park.

The Cotswold Big Swim Festival (September 2026) is part of the 2026 series celebrating outdoor swimming in the Cotswolds. The event offers a variety of open-water distances for all ages and abilities, including a 10k option for this September date, plus a 4x200m team relay. Event date & headline start time: Saturday 5th September 2026 (race start shown as 08:00). September start times are to be confirmed. Venue: Cleveland Lakes Nature Reserve, Rixon Gate, Ashton Keynes, Swindon, SN6 6QW, within the Cotswold Water Park. Distances: 750m, 1.9km, 3.8km, 5km, 10k, and 4x200m team relay (4 people). Event features: an event village with exhibitors and food stands, chip timing including lap times, medal and goodies for all finishers, race photography, full facilities and refreshments (including hot food and drinks), merchandise, and a full water safety team.

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