After checking in to your hotel, you’ll have the opportunity to join the event's online group to receive the latest race updates. The transfer to the Bosphorus boat cruise and dinner departs from all hotels at 17.45 - please arrange flights and arrival times to allow for this. While the light is still good, we head upstream for familiarisation with the race course, learning the importance of which route to follow during the swim. You'll then have the chance to chat with your SwimTrek guides and fellow swimmers for a drink, dinner and informal catch-up to kick off your trip.

To avoid long waiting times at race registration on Day 2, we highly recommend taking advantage of the early race registration on Day 1 if you've arrived early and have free time.

In the morning, after breakfast, we head to the race village to complete local registration. Please note that the race registration is compulsory. Failure to attend this will mean you will be unable to enter the swim. During race registration, all competitors will be given their swim hats, athlete's pass and timing chips in preparation for the swim. Jewellery and watches, of any kind, are strictly prohibited during the race.

In the afternoon, you will have the time to relax in preparation for the following day's race or take this opportunity to book an optional sightseeing tour of Istanbul.

We've arranged for a special early breakfast before your check-out on race day, and then it’s time for the main event! We transfer to Kurucesme Cemil Topuzlu Park ready to board the ferries that take us north to the race start point. The race starts at around 10:00 and we swim down the 6½km course, taking in the sights of the city of Istanbul while having the swim of a lifetime!

The race and awards ceremony is expected to be over by 13:00, giving us time to catch an evening flight or stay on to enjoy the hospitality of Istanbul.

Once you’ve made your booking, you must complete the required profile information in your SwimTrek account.

Without this information, we will be unable to enter you into the race and your booking may be cancelled.

To complete the required profile information, log in to your SwimTrek account and fill out the ‘Personal Details’, ‘Travel Details’ and ‘Health Details’ sections for all swimmers on the booking (required information will be highlighted in red). If you need help to complete the required profile information, please contact the SwimTrek office.

If your booking includes additional swimmers, we will need an individual email address for each swimmer in order to send any essential race related information. Please go into your profile and invite your fellow SwimTrekker(s) to create an account and/or link their account to the booking, or email us their name and email address to info@swimtrek.com to assist.

IMPORTANT: Please note that the first name and surname on your SwimTrek account must match those in your passport in order to take part in the Bosphorus event. If these names do not match, you might not be able to complete the official race registration in Istanbul prior to the event.

In early 2027 we’ll email you the official race application form. You’ll need to complete the event paperwork (including a swim coach sign off and a declaration from a medical practitioner) and return it to SwimTrek by the deadline, which we will confirm once published by the Race organisers in 2027.

As part of your application form, you will need to have a medical examination by a certified medical practitioner. Please Note: There will likely be a fee for doctor sign off and this may need to be done privately, as not all medical practitioners are able to sign off a declaration. It is your responsibility to book and pay for your medical appointment with sufficient time to complete your form and return it to us before the agreed deadline.

Once you return your application form to us, we’ll check to make sure that it has been completed correctly. We’ll then send you an email to confirm that we have received your application and it will be submitted for the event, so that you can begin making plans for your trip to Turkey. We recommend not booking any flights or making other travel arrangements until you've received this confirmation.

In 2027 the following documents will need to be returned to SwimTrek:

• 1 x passport style photo taken within the last six months
• 1 x copy of the photo page of your passport (with at least six months validity)
• 1 x signed official race medical form (signed by a medical practitioner)
• 1 x signed official race ‘Fit for participation’ form (signed by a certified swim coach)
• 1 x copy of your swimming coach’s qualification certificate

IMPORTANT: A qualified swim coach will be required to sign off your registration form in order to confirm that you are ‘Fit for participation’ in the Bosphorus swim. A copy of this coach’s qualification (e.g. certificate from national governing body) will also need to be submitted with your official paperwork in order to register for the event. If you do not have a swim coach, it is your responsibility to enquire with local pools or swimming clubs in order to find a suitable person to assist with this process.

All of the above information is required by the Turkish Olympic Committee and no exceptions can be made.

Is my place in the Bosphorus Cross-Continental Swim guaranteed?

Yes! Your SwimTrek booking includes a guaranteed race entry, so you no longer need to wait to find out whether you've secured a place.

However, you must still complete all required personal information, official documentation and registration procedures to be eligible to participate.

When will I receive my official race paperwork?

We expect to send your official race application paperwork in early 2027.

This will include the forms you need to complete and details of the submission deadline, once this has been confirmed by the Turkish Olympic Committee.

What race paperwork will I need to complete?

You will need to complete your SwimTrek profile by 31 December 2026. The following documents are then required by the Turkish Olympic Committee (these documents will be sent to you for completion in early 2027):

• 1 x signed official race medical form (signed by a medical practitioner)
• 1 x signed official race 'Fit for participation' form (signed by a certified swim coach)
• 1 x copy of your swimming coach's qualification certificate
• 1 x passport-style photograph taken within the last six months
• 1 x copy of the photo page of your passport (with at least six months' validity)

When do I need to complete the paperwork by?

Please complete your SwimTrek profile as soon as possible after booking, with a deadline of 31 December 2026.

For the paperwork for the Turkish Olympic Committee, these documents will be sent to you in early 2027 alongside the completion deadline.

All required documentation must be submitted by the specified deadline.

If you fail to provide the necessary information or paperwork, we may be unable to complete your official race registration, and you may lose your place in the event. Your deposit will be forfeited.

What happens if I can no longer attend the event? Can I get a refund or transfer my place to another year?

As your race entry is purchased on your behalf when you book, special booking conditions apply. A 40% deposit is required at the time of booking and is non-refundable if you cancel at any point after making your booking.

Race entries are also non-transferable.

If you cancel less than 90 days before departure, an additional cancellation charge equal to the remaining per-person package price will apply.

We strongly recommend arranging comprehensive travel insurance that covers cancellation, illness and participation in open water swimming events.

For full details, please refer to our Terms and Conditions.

What happens if the event is cancelled or the date changes?

The Bosphorus Cross-Continental Swim is organised by the Turkish Olympic Committee, which is responsible for race operations, safety decisions and event logistics.

If the event is cancelled or rescheduled, we will communicate any updates from the organisers as soon as they become available and advise you of the applicable arrangements and options.

Race Organisers

Please be aware that whilst SwimTrek organise the tour part of your package, the Turkish Olympic Committee are the event organisers and are fully responsible for the entry procedures as well as race safety decisions and logistics.

Extra Activities

If you would like to add a guided tour of historic Istanbul or an evening with Whirling Dervishes for information on prices and availability, contact our partners in Turkey on info@swiminturkey.com. These activities are booked and paid for directly with our Turkey partners Wilusa Tur and do not form part of your SwimTrek contract.

Supporters Package

There are a limited number of supporter’s packages available which include shared accommodation with a race participant, the pre event boat tour and dinner, also all transfers. Please note that, on the day of the event, supporters will be at the finish line and will not be able to see the start of the race live, however, several big screens at the finish point will broadcast the race start for supporters to see.

Race Equipment

Due to the nature of the event and the mild water temperature, wetsuits are not allowed. Jewellery, watches and smart bands of any kind are strictly prohibited during the race. At registration you will receive an official swim cap which must be worn during the swim along with the timing chip ankle band.

Equipment Checklist

For your basic, essential packing list, please see our Packing List page on the website. For all additional location specific items please see the table below

*Try to bring one clear lens and one tinted lens for different light conditions.

Bosphorus Cross-Continental Swim

The world’s most concentrated shipping lane is closed to all traffic as we participate in this annual race. You can either race to win it or just go along at your own pace.

We have given this trip a ‘Moderate’ grading. Most swimmers comfortable in the open water will be able to take part and enjoy one of these trips.

Group Size and Boat Support

The Bosphorus Cross-Continental Swim is a mass start event. Boat support on this trip includes a flotilla of small boats arranged by the event organiser.

Swimming Conditions

An interesting feature of the Bosphorus strait is its curious water flow. On the surface, the Bosphorus usually flows from the Black Sea towards the Sea of Marmara (carrying our Bosphorus swimmers along with it). However, at greater depths, the current flows in the opposite direction, carrying huge volumes of water back towards the Black Sea.

You should note that conditions in this large body of water may become more challenging. This race involves a mass start, but despite the large number of participants it is possible to take your time and wait for a quieter period to enter the water.

Swimming in the sea is a fantastic experience, however you should be aware that certain marine life such as sea lice, jellyfish and sea urchins could be present during the swim. If you suffer from anaphylaxis, please consult the office prior to booking.

Race Distance

Race Time Limit

There is a time limit of two hours to complete the course. The Turkish Coast Guard will remove swimmers from the water if they do not finish the crossing within this time.

Temperatures

*Please note that these temperatures are indicative and should be used as a guide only.

Weather Caveat

For safety reasons, the event organisers rely on decent weather conditions in order to carry out the swim. In the event of bad weather and the swim being cancelled, there are no reserve/alternative times or days available.

Istanbul is a popular travel destination and there are a wide range of scheduled flights operating to the city’s two main airports, Istanbul Airport and Sabiha Gokcen International Airport. As SwimTrekkers come from all over the world, and join our swimming holidays in numerous destinations, we don't currently offer flights as part of our SwimTrek packages. We do however want to do as much as we can to ensure that our guests get the best deals when travelling to one of our trips so check out SwimTrek's tips to help you get the best deals for your flights page on the website.

Flights to Istanbul Airport (IST) and Sabiha Gokcen (SAW) Airport

Istanbul’s new airport, ‘Istanbul Airport’ replaced Istanbul Atatürk Airport as the city’s International Airport. Istanbul Airport is located north of the now permanently closed Atatürk Airport, on the European side.

Shared & Private Transfer from Istanbul Airport to Hotel

If you would like to book a private transfer from Istanbul Airport to your hotel, or to check availability of shared transfers, this can be arranged via our partners in Turkey on info@swiminturkey.com

Taxi from Istanbul Airport and Sabiha Gokcen Airport to Hotel

Taxis are readily available from both Istanbul Airport and Sabiha Gokcen Airport to Istanbul city centre for approximately €50 (600TRY - 1000TRY).

Public Transport from Istanbul Airport and Sabiha Gokcen Airport to Hotel

The cheapest way to get from both airports into the centre of Istanbul is by using public transport, although this can be a more complicated option.

From Istanbul Airport, central Istanbul is reachable by public transport through IETT buses or HAVAIST shuttles.

The city also has a well-renowned metro and tram system. The new metro line (M11) runs regularly from Istanbul Airport to Levent in central Istanbul, and provides much shorter journey times. In just 30 minutes, it brings you to Gayrettepe, the last stop on the line, which is just a few hundred metres from the Point Hotel or Divan City Hotel. For more information please visit Instanbul Airport Metro.

SwimTrek Transfers

SwimTrek will provide transfers between your accommodation and the race village for registration and the boat tour, as well as to and from the race meeting point on Race Day. 

Your SwimTrek package includes two nights’ accommodation at one of the below hotels which are located around the Sisli area of Istanbul. Our accommodation is based on twin-share rooms with en suite facilities. There are a limited number of single supplement rooms which can be reserved during the booking process, subject to availability.

Please note, although the official check-out time at the hotel will be around 12:00, it is important to check-out prior to leaving for the race on Race Day as you will not arrive back at the hotel until after the race at about 13:00.

Pre/Post Trip Accommodation and Trip Extension Options

If you would like to extend your stay in Istanbul and need to book additional nights’ accommodation before or after your trip, contact our partners in Turkey on info@swiminturkey.com or get in touch with the hotels directly using the links above. Please note that when booking extra nights, it may not be possible to reserve the same room and you may be required to check out and check in to a different room before or after your SwimTrek trip.

Food and Drink

Breakfast is included in your package. Lunch and evening meals are at your own expense, which gives you a fantastic opportunity to explore and experience your choice of Istanbul’s street food, cafes and restaurants. On race day there is ‘fast food’ available in the Race Village at Kurucesme Cemil Topuzlu Park. Be prepared as the restaurants and cafes close to the park may be busy after the event.

For more information, please visit our Food and Drink page on the website

For more information on any of the following sections please visit the Travel Advice page of our website.

Money, Extra Expenses and Tipping

You should bring extra money with you to cover such items as dinners, drinks, entertainment, souvenirs, etc. The local currency in Turkey is Turkish Lira (TRY). Cash machines, bars and restaurants are plentiful in Istanbul city centre.

Extra expenses not covered within your package price include your medical as part of the race entry and any city tours and airport transfers you require.

Responsible Travel

SwimTrek is conscious of the importance of protecting the world’s natural wonders. We are acutely aware of our responsibility to not only take care of the natural environments which we are lucky enough to explore, but also to educate our guests about the importance of conservation efforts and responsible tourism. It’s for this reason that we have worked so closely with our partners to ensure that our trips are conducted in the most responsible and sustainable way possible, working tirelessly to minimise the impact of our presence on local marine life and the natural habitat.

For more information, please visit our Responsible Travel page on the website.

Passports and Visas

Turkey is not part of the European Union. Most foreign nationals entering Turkey must purchase a visa before entering the country. Residents of the EU, alongside UK and US citizens, do not need a visa to enter Turkey and stay for a period of up to 90 days. Non-residents of Turkey require a full passport to enter the country, which should be valid for six months beyond the expected length of stay. It is important that you purchase your visa through the official website, www.evisa.gov.tr and avoid purchasing through third-party providers, as these can be considerably more expensive. As of 17 April 2026, Australian ordinary passport holders are exempt from visa requirements for Türkiye and can enter for tourism or transit for up to 90 days within any 180-day period. New Zealand ordinary passport holders are also visa-exempt for stays of up to 90 days, though this exemption was already in place before the recent Australian change.

Please note that visa regulations are subject to change and it is important that you check your own visa requirements prior to travel.

Travel Insurance

We consider comprehensive travel insurance to be essential, and we strongly recommend that you purchase insurance which includes, but is not limited to, cover for illness, accident, emergency repatriation, ambulance, air ambulance, helicopter rescue services, cancellation, lost luggage and delays. Your travel insurance should also cover you for open water swimming and any other activity listed in your trip itinerary (including races and competitions, where applicable). Please read your policy details carefully and remember to take them with you on your trip for your own reference.

For further information, please visit our Travel Insurance page on the website.

Health Information and Recommended Vaccinations

For comprehensive health information for people travelling to Turkey, including all recommended and required vaccinations, please visit www.travelhealthpro.org.uk/countries. Please note that this information is subject to change and you should re-check this site regularly prior to your trip.

Please Note: It is your responsibility to arrange your medical appointment, in order to obtain sign off from your medical practitioner, as part of your application.

Internet Access, Electricity and Travel Plugs

Please note that, while Wi-Fi is available at all SwimTrek hotels, extra roaming charges may apply for guests who choose to use a SIM card from their home country while they are in Turkey. Local SIM cards are available for purchase upon arrival at both major airports in Istanbul, as well as throughout the city.

For a useful source of information on the different electrical outlets, electrical plugs, and electric sockets, please visit www.worldstandards.eu.

eSIM's

An alternative to buying a SIM card when you land, is to purchase an eSIM before you travel. It is important to check whether your device is compatible, and able to accept an eSIM before committing to a provider.

The advantage of having an eSIM is that you can have data, calls and messages, depending on the package you choose, as soon as you land.

Popular providers include Holafly, Nomad eSIM, Saily eSIM, Airalo and Lycamobile.

It is recommended that you install your eSIM on your device 1-2 days prior to travel as you'll need a solid WiFi (or data) connection to complete the eSIM instillation process. Installation instructions will be given by the provider that you choose and depend on the handset you use.

A 40% deposit is required for this event, if you cancel at any point after making a booking your deposit of 40% of the total price is non-refundable, and the entry is non transferrable, as race entries are purchased on your behalf and are normally non-refundable by the race organiser.

If you cancel less than 90 days before departure, an additional cancellation charge equal to the remaining per person package price applies

For more information read our Terms and Conditions.