Bantham Boomerang

How far can you swim before the tide turns? Our new event for 2021!

Tim Bridges

FRIDAY 9th JULY 2021


How far can you swim before the tide turns? The Bantham Boomerang swim is a new swim for 2021: a 7-10km swim on the Aune Estuary in Devon, taking place on a Friday afternoon.

The Boomerang swim starts at Bantham (home to the Swoosh), with swimmers heading upriver on the incoming tide. When the tide turns, so do the swimmers, swimming back downriver with the outgoing tide, swooshing into Bantham Beach and the finish line.

Suitable for previous Swoosh-ers, Dart10k and Hurly Burly swimmers.

The distance swum will depend on how fast you swim, but all swim speeds are welcome. Swimmers will be set off according to their speed, which you are asked to know by the day. Some swimmers will make it all the way to the turnaround pontoon upstream before the tide turns, others will have a shorter journey. Our fantastic safety team will be there to support you every step of the way.

The Bantham Boomerang is the sister event to the Sunrise Swoosh –  check out the event report and gallery for the 2019 Swoosh event for a preview of what our events are all about.


The Bantham Boomerang will take place on Friday 9th of July 2021. Registration is open in the early afternoon at Bantham Beach, with the swim starting after 5pm. High tide is at 6.50 pm and the swim finish is expected between 7 and 8.30 pm – just in time for food at the finish. 

Registration packs will be sent by post, but you will still need to leave time to register before your swim – detailed event timings will be shared with swimmers in the event information pack, around 2 months before the event. 


The Bantham Boomerang was cancelled in 2020 due to coronavirus. You can find information on the cancellation here. If you have a Seasonaire ticket (a ticket for all of our events in 2020) please read the latest update here.

All 2020 tickets for the Bantham Boomerang have automatically been carried over to the 2021 event, unless a refund was applied for. The refund window is now closed, but the free transfer window is open until 23rd May 2021 – the recipient of a ticket transfer can confirm the transfer here.

Tim Bridges


We recommend that swimmers are able to swim 7km confidently. There’s a gentle pull in both directs as the tide comes in and then goes out, which makes life easier, but a bad weather day (chop or a headwind) can counteract that, so come prepared for less favourable conditions – this means practicing swimming in chop, headwinds and tidal currents.

A key test of the swim for most swimmers is the water temperature. The swim is early in the season, so while water temperature is not that dissimilar to the end of season (12-15 °C is expected), most swimmers aren’t so well acclimatised. Getting out in open water in May & June before the event is the way to prepare for this. 

Please note – the Swoosh occurs as the estuary narrows at the very end, you will be swooshed for the last 500m of the swim, not from start to finish!

Vivienne Rickman Poole
Tim Bridges
Toms Majors


We have worked with a remarkable professional water safety team for over 10 years, who deliver the best water safety and support at all our events. Swimmers are flanked by professionally qualified employed lifeguards throughout the swim. You will be given food to transport with you on the swim, and food and water will be available from the lifeguards. 


We welcome skins and suits swimmers at our events, but Skin Swimmer Passes must be applied for and are not guaranteed. All tickets are sold on the basis that participants will wear full length swimming wetsuits or full length sleeveless wetsuit. 

WETSUITS: Your wetsuit must, at least, cover you from shoulders to below the knee, be made of neoprene and be designed for swimming / triathlon / swim-run (i.e. not scuba diving or surfing). Surf wetsuits do not offer the same mobility or buoyancy balance as swim wetsuits, which leads to physical issues completing longer swims. 

SKIN SWIMMER PASS: Skin Swimmers Passes are awarded on the basis of suitable experience and must be applied for by the 16th May 2021 using this form. Once granted, the pass is valid for all 2021 OSS events. Applications are vetted by the Events Managers and decisions are non-negotiable. If you filled in the skins swimmer application prior to 2020 events we ask that you fill it in again to provide your most up to date experience. 

Swimmers who completed a 2019 event with The Outdoor Swimming Society in skins will automatically be granted a 2021 Skins Swimmer Pass. 

If you are fairly new to skins swimming, but think you’ll want to swim the event  without a wetsuit please fill in the Skins Swimmer Pass application form nearer to the deadline so you can provide the experience you have had to date, rather than what you expect to do.  If you don’t get a pass and don’t want to swim in a wetsuit you can transfer your ticket to a friend. Cut off for ticket transfers for the Bantham Boomerang is 23rd May 2021, one week after the Skins Swimmer Pass application deadline. 

Vivienne Rickman Poole


Most people swim our events using front crawl, but we do have swimmers that do butterfly and breaststroke. Breaststroke is not generally recommended because it’s hard on the knees to swim this distance in a wetsuit. As this swim is not set distance and instead depends on how far you get before the tide turns, please be prepared to do a shorter distance overall if you swim breaststroke or are a more leisurely swimmer. If you are planning to do this swim fly, please let us know – We would love to follow your journey! 


We welcome and can aim to accommodate all swimmers with additional needs who would like to swim as much as we can. It is essential that those with additional needs, or anyone who has concerns about their ability to take part in this event, seek their doctor’s advice before taking part, and please contact us email the event manager prior to buying a ticket or as soon as possible once you have a ticket, to discuss how we can accommodate you. Swimmers with additional needs will be accommodated within the existing water safety provision wherever reasonable adjustments are possible (no separate arrangements can be made), and will need to attend an additional safety briefing prior to the swim.


Events run by The Outdoor Swimming Society are tow-float free. We have ample safety cover who watch swimmers via their brightly coloured hats. Tow floats makes sighting swimmers more difficult by doubling the number of brightly coloured objects in the water, and may entangle other swimmers. It is sometimes stated that tow floats make retrieving an unconscious swimmer easier, however tow floats are not tested or rated to act as a safety device in this way. Snorkels and fins are not permitted as the hard edges risk injuring other swimmers at the swim start in particular.

There is a turnaround pontoon at around 5km upriver from Bantham Beach, and lifeguards will have emergency food and water suppliers. You will also be provided with a stash of jellybabies to carry up the leg or sleeve of your wetsuit. Most swimmers with personal medication tuck it up the sleeve of their wetsuit – however, if this doesn’t cover your needs and you want to use a tow float for this purpose please contact the event manager.

Graham Wynne


All swimmers and their supporters will park at Bantham Beach (car parking charges apply and are taken by Bantham Estate when entering the estate). 

Bantham Estate, where this event is held, is offering camping to Boomerangers ONLY on the Friday night. In 2021 this camping is NOT available to Swoosh swimmers. This is a change to previous years, and is to avoid outgoing Boomerangers meeting incoming Swooshers and causing gridlock in the lanes on a Friday night, and outgoing Swooshers disturbing villagers before sunrise on Saturday. Camping fees will be collected by Bantham Estate on entry to the estate, and prices will be shared with swimmers when they are sent their information pack.

Food will be available to purchase at Bantham before and after the swim. We’ll also be looking to organise a celebratory BBQ following the event – look out for tickets, to be advertised via an email to swimmers nearer to the event. 

Please do NOT rely on Sat-Nav to reach the event – use the printable maps below instead. Don’t rely on the following postcodes: The end of the swim (for those who’s ticket states this, and all spectators) is Bantham Beach near TQ7 3AN. Aveton Gifford parking (for those who’s ticket states this) is near TQ7 4LF .

Please note, spectators will not be able to see swimmers in Aveton Gifford – the turn around point will be out of sight and downriver of the Aveton Gifford end of the route. 


Our events are run, on land, by a small but fantastic army of volunteers. If you or your supporters would like to join the #OSSteam for event day or a day around the event, please read this Bantham Boomerang and Sunrise Swoosh volunteering factsheet. #OSSteam members will receive a free T-shirt, free parking during the event and free Friday camping, a discount on a future swim entry and 2021 Bantham Boomerang event merchandise, early-bird access to 2022 tickets for all OSS events, and a whole lot of love from The Outdoor Swimming Society Events team and swimmers ,as they make this swim possible for others.




We will do everything we can to run the 2021 events. As part of event preparation for 2021 our event team will undertake planning of all aspects of the event to make sure they are Covid-19 secure and can meet changing circumstances.

We will communicate all information to you by email: this year more than any, please save to your address book to ensure you receive and read event communications. An Event Information Pack will be issued to all participants 2 months prior to the event and will include any special measures we are taking.

Please be aware we can only run events if all WHO and UK Government guidelines in place at the time of the event can be met, and the event is supported by local councils and event stakeholders. If the event is unable to run due to a local lockdown or change in national or local circumstances due to Covid-19, we will do our best to provide a suitable alternative to the event (at a different venue or on a different weekend), but this may not be possible. One foreseeable scenario is that we have to restrict spectators to reduce social transmission, increase the ability to physically distance entrants, and to enable effective tracking and tracing. We advise you to check the terms and conditions of associated bookings such as accommodation and travel so you are fully aware of their cancellation policy if changes to the event do happen.

Whatever changes are introduced, we hope to deliver the same feel-good events as ever.



After the statutory 14 day cooling off period, tickets cannot be refunded or deferred. 

If you decide you will not be able to attend the event:

We realise that situations change and you might get injured, change jobs, or get invited to your best friend’s wedding. As your entry is NON refundable we suggest you consider taking out insurance to cover any costs you incur if you are not able to attend the event. Please check the conditions of your policy carefully to make sure it provides the cover you require.

You may be able to transfer your ticket to another swimmer. The transfer window is open now and will run until midnight on the 23rd May 2021. If tickets do not sell out, transfers will not be offered.

You will need to find a recipient for your ticket (we recommend advertising you ticket on the Official Bantham Boomerang Facebook page) and you will need to arrange for the transfer of payment for the ticket between yourselves. You are responsible for making sure the recipient is aware of all of the terms of the ticket, including any fundraising or volunteer commitments included within the ticket. 

The recipient of the transfer should visit the Bantham Boomerang ticket page and select a “Bantham Boomerang 2020 ticket transfer”. After the 23rd May 2021, your ticket is yours to keep and no transfers are possible. 

If the event is cancelled by The Outdoor Swimming Society:

No refunds are given if we have to cancel or curtail the event due to adverse weather, pollution, government orders or other factors outside of our control.

The OSS has a robust attitude to both safety and risk and works with an extremely professional water safety crew to ensure that the event will run if it is safe to do so. In the unlikely event we have to cancel on the event day or immediately before the event due to, for example, storms, lightning, or heavy rain that impedes the view of the safety team then you will not be offered a refund or a deferred entry to the next year’s event. At this point, everything will be in place for the event to take place and most, if not all, event expenses will have been incurred.

The OSS does not hold cancellation insurance to cover this eventuality as insurance of this nature is extremely expensive and would not cover all costs incurred by the event. 

Please see our Event Terms and Conditions for more information. 


Swimmers are free to raise money for any charity (or none), and we are delighted to partner with Level Water once again as our primary event partner charity.

Level Water is a young and fast growing charity whose fortunes were changed overnight by involvement in the Dart 10k. The charity provides one-to-one swimming lessons for disabled children across the country, teaching them the basics then help them to join mainstream lessons and competitive clubs.

To help support its work, The Outdoor Swimming Society receives funds from sales of tickets for branded OSS events and merchandise. Every purchase you make supports the running of the society, which is a not-for-profit organisation in it’s self defined role as the UK’s (and the world’s)  best inspirer and informer on the art and sport of swimming.

A huge thank you for the continued support of our sponsors: 


Thank you for the continued support of our supporters: Bantham Estate, Aveton Gifford Parish Council, Michael Tucker, Bantham Harbour Master, for their continued support for the Sunrise Swoosh and Bantham Boomerang events.