The 2025 Summer open water swimming season is almost upon us.
We will be ready to go on Saturdays from 3rd May 8-10am, then Wednesdays from 7th May 6-8pm, until the end of August, then Saturdays only until 27th September.
Thank you to all swimmers who participated in our sessions in 2024, but especially to those who volunteered to Swim Manage or help out. Your continued support is greatly appreciated.
Jason – your Summer OWS manager
Open Water Swimming Information
Tri-Anglia offer open water swimming sessions for club members in Whiltingham Country Park’s Great Broad. Sessions run every Saturday morning and Wednesday evening from the beginning of May until the last Saturday of August and then just Saturday mornings in September.
This page outlines the normal operating procedure for the Whitlingham Adventure (WA) provided Open Water Swim Sessions for Tri-Anglia Triathlon Club to be held during 2025. This page should be used in conjunction with WA Emergency Action Plan.
2025 Procedures: How To Book
Book Your Slot – IMPORTANT
All swims must be pre-booked and paid for on the website. Go to the Training -> Adult Training Sessions Page then click on the green ATTEND button.
Numbers will only be limited by the kayak cover in place. At busy times swimmers may have to wait for an earlier swimmer to exit the water before they can start their swim, but we will do our best to get the numbers right.
Online bookings for the month will be opened up, before the end of the month for the next block. Once sessions are full there will be a waiting list so if you sign up and then decide to cancel you may do so without charge up to 6pm the night before your swim for Saturday sessions and up to 4pm on the day for Wednesday swims. Keep your eyes on your Junk/spam email inbox as a lot of our automated waiting list confirmations are going to spam!
I will always aim to post on the club Facebook page when sessions are open to book.
There may on some dates be spaces available on the day, but this can never be guaranteed. The only way to guarantee yourself a swim is to sign up in advance. Pre-booked swimmers will always take priority.
Session Costs & Payment
Each swim costs £6.50 and the payment will be initiated following members booking up for a swim. Payment for sessions will be automatically taken via GoCardless Direct Debit. You will be notified by email that a payment will be attempted. Please ensure you have set up your GoCardless Direct Debit payment for training sessions. You can check to see if you have a valid Direct Debit set up by going to your Session Payments page.
2025 Procedures: What To Do On Arrival
Location and Parking
The swim starts from Whitlingham Adventure (WA), Trowse, Norwich, NR14 8TR, which is the series of cabins under the large white canopy at the end of the largest Broad.
Members who drive to Whitlingham are encouraged to park in the Whitlingham Country Park car parks rather than on Whitlingham Lane. In fact parking on Whitlingham Lane within the park will incur a fine and parking elsewhere on Whitlingham Lane leads to congestion. Tri-Anglia members are able to buy a year’s cark parking at a discounted rate, enquires to RCP@rcpparking.com. You must be able to show proof of current membership.
For more information: Parking (whitlinghamcountrypark.com)
Changing
Please change before signing in, do not leave any equipment in the changing rooms. There is limited space on the deck to leave personal belongings, so please be mindful of others and their space. Put your bag in a clear area / locker / table space on the deck.
Check in and check out
All swimmers, once fully ready to swim, must have their membership card which will be exchanged for a numbered wristband and placed in the correspondingly numbered pouch in the swimmers file. Upon exiting the water the swimmer must immediately return the band and retrieve their membership card. This will enable the OWS manager to check all swimmers in and out of the water and ensure that we hold appropriate medical and emergency contact details for those in the lake
NO CARD = NO SWIM
Check out the safety information / water temperature on the board. If you are new to the lake, make yourself known to the TA Swim Manager who will be able to talk you through normal operating procedures.
Put on your swim hat and enter the water from the deck.
What you will need
You need your:
- membership card,
- Wetsuit (or confirmed Non wetsuit option in your Membership profile)
- a red, purple, bright (neon) green or white swimming hat (SEE SWIM HAT SECTION FOR WHICH COLOUR TO BRING)
The use of wetsuits in Tri-Anglia Open Water training sessions.
Wearing a wetsuit in our open water swim sessions is recommended for all adult members and is compulsory for all junior members.
It is possible to swim without a wetsuit in our open water sessions but serious consideration and an understanding of all the health risks is required before you do so.
Please read ALL of this guide, and the Self Assessment that follows, as they very important for your safety. You will be asked to confirm this when signing up and renewing your Membership and will be asked to choose from three options:
- Always swim a wetsuit – this is our recommended option.
- Swim with out a wetsuit but with a tow float.
- Swim without a wetsuit and without a tow float.
Your choice will shown on your membership card.
Choosing to swim without a wetsuit doesn’t prevent you from opting to use one if you think it may be better on any particular the day. However, if you opt to always use a wetsuit but then want to go without at some time you must update your decision in the Membership form and allow up to 7 days
Benefits of wearing a wetsuit:
- Protection from cold water whilst swimming. Cold water can cause a drop in your core body temperature and lead to health risks such as cold water shock and hypothermia. Wetsuits can help you acclimatise to the cold water and keep your core temperature stable and help prevent/minimise post swim ‘after drop’.
- Protection from weather conditions such as cold air temperature, rain, hail, cold winds or changes in temperature during your swim. Wetsuits also give good sun protection.
- Increased buoyancy and hydrodynamic nature of the rubber and the coated neoprene can improve your body position in the water and can lead to improved efficiency and speed.
- Increased visibility – for the safety rescue team and other lake users. Wetsuits can allow for a more buoyant body position and some wetsuits have brightly coloured panels.
- Protection from other water inhabitants such as duck fleas and, if swimming in the sea – jelly fish.
Wetsuit swimming in warm water – also requires very serious consideration.
If the weather has been hot and the air and water temperature is warm, swimming
in a wetsuit can lead to your core body temperature rising, which puts you at risk of experiencing hyperthermia, heat exhaustion, dehydration, cardiovascular problems and the very serious risk of heat stroke. You should be aware of these risks, check the water temperature on our information board when you arrive to swim and consider reducing the duration of your swim.
Non-wetsuit
Following guidance from Beyond Swim and British Triathlon, anyone wishing to swim without a wetsuit in our open water sessions has a duty of care to take additional precautions for their own safety, for the safety of other swimmers and for the safety rescue team. The decision to swim non-wetsuit is the responsibility of the swimmer alone and should be well informed and seriously considered.
Swimming non-wetsuit is only permitted in our sessions if the water is 14 degrees or above. –
Extra additional precautions required for swimming non-wetsuit in our sessions:
- Make a personal assessment of your swimming experience, competency and health. See below for guidance.
- Compulsory bright green swimming hat for increased visibility and to inform the safety rescue team that you are a non-wetsuit swimmer.
- Recommended tow float – tow floats are optional but are recommended by Beyond Swim and British Triathlon. Their main safety feature is they make you highly visible to all other lake users and the safety rescue team. They can give confidence to a new or nervous open water swimmer. Tow floats should not be used as a flotation device during your swim, but in an emergency they may be used as a buoyancy aid and will make you visible to the rescue team.
- Stay within your own personal limits – different people are affected differently by cold water. You personally might not be able to swim without a wetsuit for very long before you start feeling the signs of cold water shock, whereas others may be able to swim for longer periods. Everyone is different and you need to understand your body and be aware of the signs of cold water shock.
- Check weather forecast – plan ahead and be prepared for the weather conditions on the day of your swim.
- Check the temperature of the lake water – you will find this on our information board on the deck at Whitlingham. Depending on the temperature and your experience, you should consider adjusting your swim duration.
- Pack essential kit – bring warm clothing, hats, snacks and hydration for after your swim.
- Research and educate yourself on the risks of cold water swimming without a wetsuit. Find out about acclimatising to cold water, the signs of cold water shock, peripheral vasoconstriction, hypothermia, after drop, warming up gradually and dehydration. Useful website links are provided below.
Self Assessment for Non-Wetsuit swimming in Tri-Anglia open water sessions
- For the 2026 membership season, we have replaced the old paper forms and have included it as part of the online Membership application.
- The default option is to wear a wetsuit in all open water sessions.
- There are non-wetsuit options for with or without a tow-float.
- Anyone who elects to swim without a wetsuit is not bound by that decision and they are free to wear a wetsuit anytime they wish to.
- Anyone who opts to always use a wetsuit but then decides they want to go without at some time you must update your decision in the Membership form and allow up to 7 days for the change to be processed.
- Swimmers must make a personal assessment of their open water swimming capability and any health conditions they may have before opting for non-wetsuit options.
- They are also required to complete a ‘Statement of Responsibility’ confirming their choice to swim without a wetsuit.
- Please read through the lists of considerations below and use these and the above guidance to inform your decision to swim non-wetsuit.
OPEN WATER SWIMMING EXPERIENCE QUESTIONS |
1. Have you any previous experience of open water swimming? |
2. When did you most recently swim in open water? |
3. How long were you in the water? |
4. Have you any previous experience of winter swimming (water temperature below 11oC)? |
5. Do you normally wear a wetsuit? |
6. Have you previously experienced any problems when swimming in cold water? |
7. Have you experienced any problems after leaving the water e.g. fainting, hypothermia? |
Medical History
If any of the below are relevant to you, then you should carefully consider whether to swim without a wetsuit and possibly seek advice from your doctor. If you do decide to swim without a wetsuit then a tow float is recommended. You should also ensure that any medical conditions are disclosed in the Medical section of the Membership Form.
MEDICAL HISTORY QUESTIONS |
1. Do you or your immediate family (parents, siblings, grandparents) have any cardio-vascular conditions e.g. high blood pressure, dizziness or palpitations? |
2. Do you have any respiratory conditions e.g. asthma – Do you use an aspirator? |
3. Do you have a neurological condition e.g. epilepsy? |
4. Do you have any allergies e.g. bee stings – do carry an epi-pen? |
5. Are you pregnant? |
6. Do you have mobility issues or impaired sight or hearing requiring additional support? |
7. In the event of an emergency is there any information that the medical services should be made aware of? |
Compulsory Non-wetsuit events
Some Triathlon or swim events can be declared compulsory non-wetsuit on race day. Different governing bodies like World Triathlon or British Triathlon have their own rules. For example: British Triathlon ban wetsuits if the water temperature is above 24.6 degrees. Rules can differ for age groups over 60yrs.
Our own club event – Norwich Triathlon which is in June each year, has been a compulsory non-wetsuit swim many times. It is advisable to research and choose your events and/or get some non-wetsuit training in beforehand if there is a chance of it being declared non-wetsuit.
Please follow these links for more information and to educate yourself about swimming safely in open water.
Beyond Swim
https://beyondswim.org/discover/
Whitlingham Adventure is a ‘Beyond Swim’ accredited venue. ‘Beyond Swim’ is part of Triathlon England. As a British Triathlon Club, we adhere to ‘Beyond Swim’ guidelines for all our open water sessions. They are experts in open water swimming and help triathletes get the most out of their training and educate them on the safety guidance they need to take part:
Outdoor Swimming Society
https://www.outdoorswimmingsociety.com/category/survive/
Royal Life Saving Society
https://www.rlss.org.uk/blog/top-recommendations-for-safer-open-water-swimming
All members wishing to swim without a wetsuit will be required to complete an application form. Members should download and complete the application and bring it with them to the OWS session. Please use the link below for the correct form. This is due to new guidance from Beyond Swim, British Triathlon, Swim England and the RLSS, regarding the recommended use of a tow float when non-wetsuit swimming. Members who have already completed this form do not need to complete it again each season.
Swimming Caps:
A swim cap must be worn when swimming in the lake with specific colours indicating the following:
- Red swim hat indicates a regular wetsuit swimmer partaking in normal swim session activities.
- Bright green swim hat indicates an approved non-wetsuit swimmer.
- Purple indicates juniors and novice open water swimmers.
- White swim hat indicates a participant within a training race.
- Other colours to be used to indicate other special requirements such as tethered swimmers and visually impaired swimmers. Use of other colours to be communicated to the WA Duty Manager by the TA Swim Manager.
- Members should bring their own hat if possible.
Swimming Caps can now be bought via contactless payment on deck for £6
In The Water – Swimming Etiquette
Enjoy your swim and be considerate of other swimmers. Always leave space between yourself and other swimmers.
If you’re fast and skilled, use your skills and judgement to pass others wide and reduce your kick temporarily, give others space, don’t cut people up. The lake is large and there is space for everyone to enjoy their swim at their own pace.
Don’t draft – spread wide.
Do not stop or gather by the buoys, if you do need to stop, please swim out of the loop slightly to not to become an obstacle.
If at any time you are in trouble, feel anxious or panic, put yourself on your back to float and wave your arms or call to attract the attention of the safety team on kayaks, the safety boat or watching from the pontoon – someone will come over to you and offer the necessary assistance.
In order to respect the safety of the WA team we ask you to swim within your limits. Take it easy and enjoy being in the water.
At the end of your swim exit the water at the deck and go straight to the sign in/out desk, return your band, and collect your membership card. A warm shower is often a good idea especially in lower temperatures.
Tea and coffee will be available for you to make in Cabin 8, but please bring your own cup.
You will still be charged if you fail to attend. When you book a slot to swim, you are taking someone else’s chance.
OWS General Information
Dates of Tri-Anglia OWS 2026
Sessions will take place Saturday mornings and Wednesday evenings between the first Saturday in May and the last Saturday in August, then just Saturday’s in September, dependant upon water quality and temperature.
WA is booked to Tri-Anglia from 07:30 until 10:30 on Saturdays with access to the water between 08:00 and 10:00; and from 17:30 until 20:30 on Wednesdays with access to the water between 18:00 and 20:00 (or dusk, whichever is first).
Itinerary for each session as follows:
- TA OWS manager and assistants to arrive and set up, meet with Duty Manager. DM to advise of water temperature and any water quality issues. (Saturday 07:30, Wednesday 17:30)
- Kayak support will begin escorting last swimmers towards the deck prior to finish times in order to ensure the water is clear by 10.00 / 20.00, please do not attempt to start a “loop” if you think you may be close to the cut off time, choose a shorter option.
- TA OWS co-ordinator and WA Duty manager review and close session (Saturday 10:20, Wednesday 20:20)
- TA to be clear of the deck (Saturday 10:30, Wednesday 20:30)
Briefing:
All swimmers will be briefed as they sign in. First time lake swimmers must identify themselves and will have the rules, the course and safety procedures explained to them. The usual briefing information will include: any change of course, any unusual water quality or temperature, if there is a threat of lightening what the emergency procedure is.
Swim Courses


Volunteers
We could not run any of our sessions without you as volunteers. Each session needs a swim manager. This role can be split between two people, but please allow enough time for a thorough handover when sharing the session, (Wednesday 5.30 – 8.30, and Saturday 7.30-10.30) and 2 helpers, half a session each (Wednesday 5.45-7.00 & 7.00-8.15, Saturday 7.45-9.00 & 9.00-10.15).
You will be rewarded with a free swim and the opportunity to gossip with everyone who has to cross your path. Full instructions can be emailed to you in advance, and all paperwork is available on site. Please offer your services to Jason at OWS@tri-anglia.co.uk or sign up via the OWS Volunteer rota page.
Water Evacuation Procedure:
If it proves necessary to evacuate swimmers from the lake, then the alarm will be sounded. The alarm will be continuous sounding of whistles and/or horns. Swimmers on hearing the alarm, MUST make their way to the South bank (or return to WA deck or boat launch if closer), leave the water and walk back to the OEC to be counted.
Junior open water swimming rules and procedures
British Triathlon and Beyond Swim introduced new guidelines for Juniors in summer 2024. Tri-Anglia have a Junior Open Water Swim policy which all Junior club members wishing to swim in our Open water sessions must adhere to.
ALL Junior swimmers (new or experienced) need to book into a Competency test and Safety briefing and complete a signed Parent/Guardian Permission form before they can swim in our open water sessions.
Tri-Anglia Junior Open Water Policy:
Attachments
Risk Assessments from Whitlingham Adventure available on request.
End To End Swims 2025
The End to End provides a rare opportunity to swim the full length of Whitlingham Broad, which is just under one mile.
Each End to End follows the same format and timings, with two mass starts, each with their own pre-swim briefing. This allows everyone the opportunity to swim E2E if they wish.
The E2E swim is roughly 2 miles long. You can if you wish exit the lake at the far end, after one mile and walk back to the WA. Shoes will be transported for you to the far end of the lake.
The WA/sign-in desk will be open from 7.45am.
Safety cover moves with the pack of swimmers, this means you will only be permitted to start swimming with one of the mass starts. We cannot allow any exceptions to this rule. So please ensure you get to the lake in good time to sign-in, change and attend the relevant swim briefing.
Swim Start Times
8.15am for any swimmers who wish to allow 35 minutes + to swim a mile. If you wish to join this start please ensure you have signed in by 8.00am and that you are ready to listen to the 8.10am briefing.
8.30am for swimmers aiming for sub 35 minute miles. Swim brief will take place at 8.25am.
All swimmers must be out of the lake by 10am.

FAQs
Open Water Swim Coordinator 2025
Our 2024 Open Water Swim Coordinator is Jason Rix. He can be contacted via OWS@tri-anglia.co.uk. Jason is the point of contact for Whitlingham Adventure into Tri-Anglia and will be recruiting the volunteers to operate each of our club open water swims through 2025. Please contact Jason to offer your assistance or with any queries, but before the emails start flooding in do have a good read of the information on the website.