GREECE [Skopelos]

Open Water Swimming in the Greek Sporades Islands

Greece's greenest island, Skopelos, the crown jewel of the Sporades Islands, offers stunning waters, wild coastlines, and great hospitality - famous for its Mamma Mia! film locations.

Welcome to Greece’s greenest island,  Skopelos in the Sporades archipelago - home also to the cult film Mamma Mia! You’ll be singing Abba songs whether you like or not all the way around!

This racecourse takes us around the unspoilt wild coastlines, both exposed and sheltered from a regular strong north wind and of course, passing the famous filming locations like the clifftop island church Agios Ioannis

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from US$4,500

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RACECHECK|5.0
★★★★★

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Panormos, Skopelos

GREECE [Skopelos]

23-26°C (73-79°F)

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Places are limited and held on a first come basis. The booking team will confirm your spot and answer any questions.

common Questions

When does the Skopelos, Greece event take place?

Skopelos, the Mamma Mia Edition, runs in mid-September.

How warm is the water?

Temperatures from 23-26°C on Skopelos in September, the warmest water anywhere in our calendar.

Which formats are offered?

Full 33.3 CLASSIC and the 33.3 / 2 BUILD, on which no single swim exceeds 5km.

What do the packages include?

All inclusive packages start from €2,250 (but from just €1,794 as a group of 4) and cover 4 nights accommodation, breakfast and pre-fuel lunches on swim days, daily boat support and the full event experience. See the Editions below for pricing.

Where do we stay?

The event base is the small village of Panormos on the south west side of Skopelos island. Apart from ULTRA level single-occupancy at the nearby Blue Green Hotel, everyone is accommodated across the Adrina Hotel suite of Resort and Spa, Grand and Beach [ULTRA]. Friendly family owned and run hotel that feels like part of the UltraSwim family these days - and its where the Hollywood starts of Mamma Mia! stayed of course! The beach is never more than a minute from your door.

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UltraSwim 33.3 #17 Barcelona, Cami de Ronda coastal path on the Costa BravaUltraSwim 33.3 #17 Barcelona, Cami de Ronda coastal path on the Costa Brava

UNIQUE TO this event

Unique to our Skopelos venue

  • Swim between film set locations of the Mamma Mia! film! …our  2024 Pioneer event fave spot? The Mamma Mia church on a rock finish line.
  • Our main hotel base, Adrina Resort, family owned and run, hosted the film stars…but more importantly we feel, is that its off-grid with own solar electricity, and installed a filtered water supply just for us (no need for the plastic bottles prevalent in Greece!)
  • Warmest water temperatures of all our saltwater swims
  • At least one island to island crossing planned
  • Fly via Athens to visit the Acropolis, or direct into Skiathos the next door island
  • Arrive directly at the beach of the hotel by water taxi [ULTRA+ only]
  • Optional night sunset swim and beach drink, weather permitting.

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prep camp

The UltraSwim 33.3 Prep Camp takes place two days before the event and is designed to help swimmers arrive feeling confident, prepared and ready for the challenge ahead. Over two days, swimmers can familiarise themselves with the location and course, take part in guided swims and training sessions, and receive practical advice on pacing, nutrition, equipment, recovery and managing four consecutive days of open-water swimming. It is also a great opportunity to meet fellow swimmers, coaches and the UltraSwim team before race day, creating connections and helping everyone settle into the UltraSwim 33.3 experience. The Prep Camp provides the perfect bridge between training and racing — allowing swimmers to prepare both physically and mentally before embarking on their 33.3km journey.

UltraSwim 33.3 #10 Montenegro, preparation camp training swim

Race formats

what formats are available at this venue?

33.3km

CLASSIC

The full English Channel distance spread across 4 days with 6 swims. The original. The one that started it all. Swims can vary from 2km to a marathon day 3 of 10-11km.

33.3 /2

BUILD

This 'Half Channel' non-competitive format aims to cover c. 17km over the same 4 days as the CLASSIC, but with all swims less than 5km. A great stepping stone to the full.

Packages and Pricing

4 package levels - but one world class delivery

Every package includes a full premium swim race experience over 4 days - the service package choice defines the extra support options like post-swim sports massage, the accommodation rating and room size, the airport transfers and many other extras.

ALL PACKAGES INCLUDE:

  • Hotel 4 nights twin shared accommodation including early breakfasts.
  • Pre-event training plan, training support channel and webinars
  • Finish line refuel lunches (excluding drinks)
  • Guided stretching sessions post race
  • Upcycled  Participation and Finisher's medal
  • Swimmer’s Pack (towel, water bottle)
  • Tow float and drybag loan (refundable €50 euro cash deposit to pay on collection)
  • Professional photos and video content
  • Group of 4 discount (4th swimmer half price) book at same time, including two new swimmers
  • Optional partner (F3, Family, Friends, Fans) supporter activity package, and accommodation package
ULTRA
Everything you need without the frills of the + packages
Everything listed above is included in the ULTRA package. It is important to note that you will be responsible for your own airport transfers except for Montenegro and Milos where they are exceptionally included.
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ULTRA+[4*]
Recommended
4* Hotel for four nights (shared accommodation, single occupancy available as an extra)

Dedicated airport transfers from/to airport to the event, except in Switzerland where there are fantastic train connections from Geneva and Zurich which make it easy for you to get to Lausanne.

Personal 1:1 Video Analysis pre-event (you must provide the video)

Swimmer’s Pack (towel or poncho, water bottle, woolly / sun hat, dry bag)

Post race sports massage (days 1-3)

Top sports injury physio on-site injury assessment (fee if further services required)

Single occupancy option guaranteed
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ULTRA+[5*]
All inclusive
All the benefits of the 4* Package

5* Hotel for four nights (single occupancy included in price)

Direct access to boutique hotels and upgrade options.
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ULTRA++
All inclusive
For the VIP experience, the ULTRA++ package, upgrades everything to a premium level.
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This comprehensive package includes everything from specialist coaching to luxury hotel accommodation, concierge service and dedicated support. It includes 5 nights of accommodation instead of 4 and includes a space on the F3 package for your partner.
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Email us for a personal consultation
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Event Format

HOW to get there?

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Where is it?

Skopelos is a beautiful and authentic Greek island, surrounded by the crystal-clear waters of the Aegean and known for its lush green landscapes, secluded beaches and charming whitewashed villages. As an UltraSwim 33.3 destination, it offers a spectacular setting for four days of open-water swimming, with swimmers taking on the challenge against a backdrop of pine-covered hills, rugged coastline and turquoise sea. Away from the water, Skopelos has a relaxed island atmosphere, wonderful local food and plenty to explore, making it an ideal destination for swimmers, friends and families. The combination of endurance, adventure and the natural beauty of the island makes Skopelos a truly memorable UltraSwim 33.3 experience.

Getting there

Fly to Skiathos (JSI), around forty minutes from Athens, then join a water taxi [ULTRA+] to Adrina Hotels or a scenic ferry from Skiathos and land transfer from the northern port of Glossa/Loutraki [ULTRA]. Aim to arrive on the morning of Thursday 17 September, and no later than 14:25; departures from 14:30 on 21 September from Skiathos.

Nearby

  • Sarakiniko, the moon like white rock bay on Milos
  • Klima, a village of colourful fishermen's houses
  • Kleftiko, the sea caves and rock formations of southern Milos
  • Agios Ioannis clifftop church on Skopelos
  • The island of Alonissos and its marine park
  • Athens and the Acropolis for a longer stay
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events

Choose your EVENT

Each running of this location has its own dates, price and booking. Pick the edition that suits you.

Open

#20

The 'Mamma Mia' Edition

17 - 20 September 2027

from €1,969

Water temperatures: 23 - 26°C (73-78°F)

Formats available: 33.3 CLASSIC, 33.3/2 BUILD

View this event

Open

#15

The 'Mamma Mia' Edition

18 - 21 September 2026

from €1,794

Water temperature: 22 - 26°C

Formats available: 33.3 CLASSIC

View this event

Event Format

HOW DOES THE EVENT WORK?

Every event follows the same simple rhythm. A supported swim each morning, an easy afternoon to rest and explore, and evenings together with the group. It is this shape, repeated across four days, that turns 33.3km into something you build towards rather than survive.

Download the full event packEXPLORE THE FORMAT ›
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Start early, swim strong

Every edition follows the same simple rhythm over a long weekend. Early starts for the best weather and safety, a post swim refuel, recovery massage*, and return to the hotels for an easy afternoon to rest or explore, and evenings together cementing new friendships.

Build distance, build confidence

As the event progresses, distances build from 4km, with a marathon (10km+) swim on day 3 weather permitting - and what feels like a celebration c.4km final day course.  You'll be tired some days, you'll feel like superman on others - in the moments of doubt on or off the water, the group energy will carry you forward.

More than just a swim

The overall experience will mark you positively, and for many even life-changing and you'll give your very best whether you finish every leg or not. Our aim is to send you home a better swimmer, person or both.

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* ULTRA + / ++ packages only

All our events so far have won awards. See reviews from other swimmers.

Gold Award 2025 RaceCheckGold Award 2024 RaceCheckGold Award 2023 RaceCheckTop Rated 2024 RaceCheck

Our events

Seven events across six countries, all built around the iconic 33.3km English Channel distance.

GREECE [MILOS]

Swim the volcanic coastline of Milos in the Cyclades over four days of warm Aegean water. Dramatic sea caves, hidden coves and some of the clearest water in the series, in early June when the island is at its best.

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Switzerland for léman hope

A 33.3km 4-day event including a crossing of Lake Geneva, from France to Switzerland, in one of the world's most iconic freshwater settings. Warm, flat water and a dramatic Alpine backdrop.

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Greece [Skopelos]

Swim the island-hopping route through the Northern Sporades, one of the most beautiful corners of the Aegean, with warm late-summer water and golden light that makes every session memorable.

Discover event

Montenegro [Bay of Kotor]

The founders' favourite. The Bay of Kotor combines warm, sheltered water with a UNESCO World Heritage setting that stops swimmers mid-stroke. Warm swimming well into October.

Discover event

Barcelona [Costa Brava]

Pioneer edition

The first UltraSwim 33.3 along the Costa Brava, one of Europe's most dramatic coastlines. Warm Mediterranean water into late autumn and a host city that needs no introduction.

Discover event

Caribbean [Nevis]

Pioneer edition

The first UltraSwim 33.3 in the western hemisphere. Turquoise Caribbean water, a historic volcanic island, and a sunrise-to-sunset rhythm that will stay with you for life.

Discover event

Croatia [Hvar]

Completed 2026

Three sold out years swimming from Stari Grad to Hvar Town through secret bays and clear Adriatic water. The Islands Edition pauses for 2027.

Discover event