Welcome to Marlow Open Water Swim

Marlow Open Water Swim operates the Open Water Swimming and SUP Boarding at Westhorpe Lake. This beautiful Lake is located in the heart of the Thames Valley and easily accessible from the whole of Berkshire, Buckinghamshire and Oxfordshire.

If you want to take up open water swimming or your first triathlon, or just want a safe and professionally run lake to train from, then Marlow Open Water Swim is the place to be.

We look forward to seeing down at Marlow Open Water Swim soon.

Opening Times


We look forward to seeing you in 2020.

Open ALL Bank Holiday Mondays throughout the season.

Day Morning Evening
Saturday 6:00am – 9:00am CLOSED
Monday CLOSED 5:30pm – 8:00pm*
Wednesday CLOSED 5:30pm – 8:00pm*

*Evening swims may finish earlier than 8:00pm depending on the time of the year due to daylight hours. Swimming will close at 8pm or dusk (which ever is first).

Last entry into the lake on evening sessions is 7:30pm.

New To The Lake?

First time at the Lake this season? Fill out our Waiver Form before your first swim.

Before your first open water swim of the season at Marlow Open Water Swim we ask all swimmers to complete an online waiver form. (You will only need to complete the waiver form once for the season.)

Click Here To Complete A Waiver Form


Westhorpe Water Sports Centre, Westhorpe Farm, Westhorpe Farm Lane, Little Marlow, Bucks, SL7 3RQ

Please note: As the venue is located by a private working farm unfortunately NO Dogs are allowed on site.