Fitness Sessions

Our fitness session is an un-coached, un-lead session that allows you to practice your open-water swimming at your own pace, completing as many laps of the lake as you like in within the times specified.

This session is only for experienced open-water swimmers.



***Please check the booking link before paying for sessions as sessions are filling up.***


Please register no earlier than 30 minutes before your start time.

Price & Booking

£10 single session

£40 for a 5 session Fitness Card – Sessions are non transferable between clients.

£70 for a 10 session Fitness Card – Sessions are non transferable between clients.

Please note we operate a registration system called Lakemate. It will cost you £10 to receive a band. If you lose or break your band you will have to purchase another one. You will need a band to swim with us.

Alternatively if you own a PoolMate Plus, this has the chip in to use the scanner so you will not have to purchase a band. 

To purchase please make your £10 payment to:
Barclays: Swim For Tri Ltd. Account number: 20625280. Sort code: 20 46 60. Please use your name as a reference.

(If you already have a Lakemate band you do not need to purchase another band.)

All sessions purchased in 2021 must be used in 2021.

Please buy your sessions online:

Book FITNESS sessions


Fitness sessions is for swimmers who have competed in open-water. You will need to be able to swim 1k without stopping to swim in the fitness group. If you have not swum in open water before then you will have to attend a minimum of one skills session.

Please remember to bring your own swim hat. SFT will have £5 hats for sale. Any bright colour apart from red will be allowed.

Lou Parker open-water charity race: Date to be confirmed. Full details can be found HERE.

2021 at Stubbers

Please do not turn up unless you have pre booked your place. You will be refused entry if you have not pre booked.

You need to book in advance a time slot of your choice. Please use the BLUE book fitness sessions button to make your booking.
This will help keep queues down and smooth out the flow of people. Please observe the 2m distancing as you approach registration.
*** If you can not attend your session, please cancel your booking giving the system 24 hours notice so someone else can take your place.***
If you do not turn up or cancel giving less than 24 hours notice for your pre booked session, you will lose your session.

Please queue, register and then continue onto the grassy area to get changed and enter the water.

You can still swim until the end of the session ie book to swim at 7:00am you can exit at 8:30am, book to swim at 7:30am and you can exit at 9:00am. Your choice. Arrive at 6:30am and you can start your swim at 7:30am, up to you. This is just to help spread out registration.

Please use the hand gel on exiting the water and report your name manually to the member of staff on the beach.

Get changed on the grassy area as this will provide the space you need.

Sadly there will be no refreshments until further guidance suggests it is safe to do so.

Changing rooms will not be available. Showers will be available after 08:30am but you will need to pay £2 to enter the main park at Stubbers.

If you need basic first aid please come to registration. Any other emergencies while in the water will be dealt with by the kayaks and lifeguards as normal who will be equipped with PPE for all your safety.

Please adhere to social distancing to keep all of the SFT family safe at this time.

Swim For Tri at Stubbers Lake


Stubbers Adventure Centre
Ockendon Rd
RM14 2TY