Lake— United Kingdom

Autumn Open Water Swim: Boundary

Sep 13, 2026
Last edition date
Distances: 500m and 1km

At a glance

Last edition date
September 13, 2026
Distances
500 m · 1 km
Where
Lake · Boundary, Cheshire, North West, United Kingdom
Entry fee
60–120 €
Registration
uswimopenwater.com

About the race

In mid-September, the waters of Boundary Lake typically hold the warmth of the departing summer, though the cooling air temperatures of North West England begin to sharpen the transition. Swimmers should anticipate stable, flat conditions within the lake, as the absence of tidal influence or significant currents allows for a predictable, rhythm-focused stroke. While the water remains inviting for this annual gathering, the environment offers a calm, consistent surface that rewards technical efficiency over brute strength. For those who enjoy the transition between seasons, this event provides a distinct contrast to the earlier summer edition, offering a quieter, more reflective atmosphere as the landscape shifts toward autumn.

Cheshire
Cheshire · Photo: Jeff Buck · CC BY-SA 2.0

Historical and natural surroundings

As you navigate the course, the shoreline reveals layers of regional history and ecological recovery. The wooded grounds surrounding the lake occupy the former site of Marbury Hall, which served as a prisoner-of-war camp during the Second World War; looking toward the banks, it is possible to imagine the structures that stood there before their demolition in the 1960s. The area is currently undergoing a notable environmental revival, highlighted by the presence of Eurasian beavers, which were recorded breeding in Cheshire in 2022 for the first time in four centuries. Maintaining a steady gaze ahead, you may also catch glimpses of the nearby Marbury Reedbed Nature Reserve, a vital habitat where local conservationists actively manage the reeds to support the over-wintering of the elusive bittern. This unique combination of industrial heritage and rewilding makes the circuit a contemplative experience for any open water enthusiast.

Sources: Cheshire · Anderton with Marbury · Marbury Country Park · Marbury Reedbed Nature Reserve

Course

How to get there

Free parking is available at the venue, along the service road near the swimming area. If full, street parking is available.

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Autumn Open Water Swim: Boundary

Frequently asked questions

When was the last edition of Autumn Open Water Swim: Boundary?
The last edition of Autumn Open Water Swim: Boundary took place on September 13, 2026.
What distances does Autumn Open Water Swim: Boundary offer?
Autumn Open Water Swim: Boundary offers 500 m and 1 km.
How much is the entry fee for Autumn Open Water Swim: Boundary?
The entry fee ranges from 60 € to 120 €.
Where does Autumn Open Water Swim: Boundary take place?
Autumn Open Water Swim: Boundary is a lake swim. Location: Boundary, Cheshire, North West, United Kingdom.
How cold is the water at Autumn Open Water Swim: Boundary?
The organizer states a water temperature of 18 °C (64 °F).
How do I register for Autumn Open Water Swim: Boundary?
The reference page for registering for Autumn Open Water Swim: Boundary is https://www.uswimopenwater.com/.

Where to stay

The Cheshire countryside offers a variety of stays, ranging from historic inns and converted farmhouse guesthouses to independent boutique hotels located in the nearby market towns. For those preferring a more rustic connection to the landscape, several well-equipped camping and caravan sites are situated within reach of the lake. Expect to pay between £80 and £150 per night for standard double occupancy in local guest houses, while more refined boutique options or country house hotels may range from £160 to £250.

Things to do nearby

A visit to this part of Cheshire is best complemented by exploring its engineering and natural heritage. Visitors can tour the nearby Anderton Boat Lift, a Victorian-era landmark that serves as a masterclass in hydraulic innovation. For outdoor enthusiasts, the region features an extensive network of canal-side footpaths and woodland trails ideal for trekking. Those interested in local flavors will find several traditional pubs offering regional ales and farm-to-table dining, providing a quiet way to conclude a morning in the water.

Swimmers

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