Do you host this event?

Visit your Organizer Dashboard to manage your events and reviews.

UltraSwim 33.3 Greece The Mamma Mia Edition - cover image

4.9

(70)

UltraSwim 33.3

UltraSwim 33.3 Greece The Mamma Mia Edition

Name: UltraSwim 33.3 Greece The Mamma Mia Edition
Start: 2026-09-18
End: 2026-09-18
Location: Skopelos, Greece
Rating: 4.93

Location

Skopelos, Greece

Date

18th September '26

3 Entry Options

11.1 DISCOVERY

22.2 BUILD

33.3 CLASSIC

Rating Highlights

5.00 /5

Event Logistics

5.00 /5

Event Safety

5.00 /5

Aid Stations

Rating Overview

All Time Average

4.93

2025 Average

4.91

Rating Breakdown

Pre-event communication

4.93

Event Logistics

5.00

Supporting Staff

5.00

Event Safety

5.00

Course Navigation

4.80

Water Quality

4.97

Aid Stations

5.00

Swag

4.84

Sustainability

4.87

Facilities

4.91

Finish Area

4.96

HideShow full rating breakdown

Features & Characteristics

Degree of Challenge

Challenging

54% of reviews

Atmosphere

Small & Intimate

65% of reviews

Location

Remote Nature

87% of reviews

Swimming

Sea

100% of reviews

Awards & Accolades

Racecheck Gold Award - 2025

Racecheck Top Rated Award - 2025

Racecheck Gold Award - 2024

Racecheck Top Rated Award - 2024

HideShow event information

Frequently asked questions

When is UltraSwim 33.3 Greece The Mamma Mia Edition?

The next edition of UltraSwim 33.3 Greece The Mamma Mia Edition takes place on 18 September 2026.

Where does UltraSwim 33.3 Greece The Mamma Mia Edition take place?

UltraSwim 33.3 Greece The Mamma Mia Edition takes place in Skopelos, Greece.

What distances does UltraSwim 33.3 Greece The Mamma Mia Edition offer?

Entry options include: 11.1 DISCOVERY, 22.2 BUILD, 33.3 CLASSIC.

How is UltraSwim 33.3 Greece The Mamma Mia Edition rated by runners?

UltraSwim 33.3 Greece The Mamma Mia Edition has an average rating of 4.93 out of 5 from 70 verified participant reviews on Racecheck.

What is UltraSwim 33.3 Greece The Mamma Mia Edition like?

Based on participant reviews, runners describe it as: Challenging (54% of reviews), Small & Intimate (65% of reviews), Remote Nature (87% of reviews), Sea (100% of reviews).

Taken part? Write your review

4.9

(70)

Andy B.

4.6

· 2025 33.3 CLASSIC ·

We did Monte Negro in 2024 and loved it but said we wouldn't do another one. So we signed up for Greece a few months later and are just about to sign up for Greece in 2026!! You go for the swimming which you know is going to be hard - but nothing great is easy - but with the support you get pre, during, and post swim you feel anything is possible. Mark and his team are always there to answer your questions and support you even though they must have an incredible amount to do to ensure the event runs as smoothly as it does. So if you love swimming and fancy a real challenge do not hesitate speak to the team discuss it with them and I will see you in Greece next year.

Read less

See translation

See original

Sean W.

5.0

· 2025 33.3 CLASSIC ·

This was hands down the best event across any sport I have ever attended. The organisers' attention to detail across preparation, travel, accommodation, safety, nutrition, navigation, race management, athlete recovery and engagement was second to none. It was not only an incredibly well run set of races in a beautiful location, but the information sharing a build-up to the event built a sense of inclusion and belonging months in advance, so that by the time we all arrived many people knew each other already and it resulted in a real community that supported each other through all 33.3km. Highly recommend and I will be doing this again.

Read less

See translation

See original

Silvan M.

5.0

· 2025 33.3 CLASSIC ·

A beautifully organized four-day swim in stunning waters, combining adventure, community, and top-notch support — truly the perfect mix of challenge and joy.

See translation

See original

Jocie E.

4.9

· 2025 33.3 CLASSIC ·

The level of care and attention to detail that went into all aspects of this event was simply exceptional. I have taken part in a huge number of sporting events in my life and UltraSwim 33.3 is one of, if not THE best experience I've ever had. Faultless. I will be back for mor...

Read less

· 1

See translation

See original

Louise M.

4.8

· 2025 27km ·

Absolutely fantastic event with seamless organisation!

See translation

See original

David M.

5.0

· 2025 33.3 CLASSIC ·

Brilliant, first class from start to finish. The presence of kayakers made the course feel safe and mitigated my inexperience. I saw it as a once in a lifetime event but now would do it again and again.

See translation

See original

Angelina S.

4.8

· 2025 33.3 CLASSIC ·

Amazing course and support, everything was top-notch. Can’t wait to race again next year!

See translation

See original

Pamela C.

5.0

· 2025 33.3 CLASSIC ·

This was my 1st 33.3 event, and my sister and I had a Wonder time! Everything was so well organized before, during, and after the event. Amazing course and support, everything was top-notch. The energy was electric. The views were stunning. Everyone was so nice including the organizers, support staff, and hotel staff. It was great to connect with others who love swimming as much as I do, so I really liked meeting so many from different places that share the same passion. Can’t wait to race again next year!

Read less

· 1

See translation

See original

REGINA R.

4.7

· 2025 33.3 CLASSIC ·

Overall a solid event. I’d do it again! The staff and volunteers were amazing...

See translation

See original

Mikael E.

4.9

· 2025 33.3 CLASSIC ·

This is a wild swimmer's dream. Nice water, excellent swimming routes, and to topp it. You meet new and inspiring people who will take you to the next level.

See translation

See original

Allow Racecheck to use cookies on this browser?

UltraSwim 33.3 Greece The Mamma Mia Edition