
Zakynthos Small Boat Tour to Keri Mizithres and Marathonisi
Traveler rating
4.9/5
Based on 121 traveler reviews. Ratings and reviews provided by Viator and Tripadvisor.
Quick answer
Is Zakynthos Small Boat Tour to Keri Mizithres and Marathonisi worth booking?
Zakynthos Small Boat Tour to Keri Mizithres and Marathonisi is a 5.5-hour experience in Zakynthos, Greece, from $106 per person. It scores 87 out of 100 on the Outty Ranking, which we label “Exceptional”, based on a 4.9/5 rating across 121 reviews. Cancellation is free up to 24 hours before the start time. Same-day spots are currently showing.
- Outty Ranking
- 87 / 100
- Rating
- 4.9/5 (121)
- Duration
- 5.5 hours
- From
- $106 per person
Enjoy a small boat trip to the caves of Keri, Mizithres, and Marathonisi and see the beautiful turtles swimming next to the boats on the amazing beaches of Zakynthos. After you have been picked up from your accommodation or the closest meeting point by our air-conditioned bus, you will set off from the port of Agios Sostis. Let a cool breeze waft across your face on a three-hour boat trip. Take home impressive memories as you discover the Keri Caves and Marathonissi. Do not fail to refresh yourself in the Ionian Sea. Bath and snorkel before making your way back to the port of Agios Sostis. Keep an eye out for the well-known Caretta-Caretta turtle, which, with some luck, will accompany you on the crossing. Your well-deserved lunch with local dishes awaits you in a traditional tavern near the harbor.
What you get
About this experience
Enjoy a small boat trip to the caves of Keri, Mizithres, and Marathonisi and see the beautiful turtles swimming next to the boats on the amazing beaches of Zakynthos. After you have been picked up from your accommodation or the closest meeting point by our air-conditioned bus, you will set off from the port of Agios Sostis. Let a cool breeze waft across your face on a three-hour boat trip. Take home impressive memories as you discover the Keri Caves and Marathonissi. Do not fail to refresh yourself in the Ionian Sea. Bath and snorkel before making your way back to the port of Agios Sostis. Keep an eye out for the well-known Caretta-Caretta turtle, which, with some luck, will accompany you on the crossing. Your well-deserved lunch with local dishes awaits you in a traditional tavern near the harbor.
What's included
Included
- Lunch
- In-vehicle air conditioning
- Tour guide in-person: English
Not included
- Gratuities
- Drinks
What you'll see and do
Keri Caves
Pass by the Keri Caves during the 3hour boat cruise
Pass by without stopping
Marathonisi
Pass by Marathonisi during the 2.5 hour boat cruise
Pass by without stopping
Where it starts and ends
Hotel pickup
Pickup is included for all travelers. Pickup begins about 30 minutes before departure.
Before you book
- Cancellation
- For a full refund, cancel at least 24 hours before the scheduled departure time.
- Languages
- en
- Ticket
- Mobile Only
- Runs on
- Wed, Fri
- Group size
- Up to 10 travelers per booking
- Operated by
- Cretan Holidays
Know before you go
- Infants are required to sit on an adult’s lap
- Suitable for all physical fitness levels
- Guests with sea sickness
- Please note that there are no restroom facilities at the Agios Sostis port or on the boat. Additionally, there are no options to purchase snacks or drinks at the port, so we recommend bringing any refreshments you may need with you for the tour.
Photos






What travelers are saying
Outty’s summary of the themes that recur across 121 traveler reviews. Written by us, not quoted from reviewers.
The guide
4 mentionsTravelers single out the guide as the reason the experience works.
Food and drink
3 mentionsThe tastings and food stops are a highlight for most reviewers.
Traveler reviews
121 verified traveler reviews for Zakynthos Small Boat Tour to Keri Mizithres and Marathonisi. Ratings and reviews provided by Viator and Tripadvisor.
Unforgettable day
Great experience! People friendly! Places unforgettable!!
via Tripadvisor
Absolute Paradise
What a fantastic day. Fabulous touring of the beautiful caves and water. 2 amazing swim stops. Our guide played a great and appropriate playlist through the beauty spots and even guided us swimming through a cave which was a great experience. The food at the El Greco was amazing too as a meze of different authentic Greek cuisine. The food just kept coming and all in woth the price.
Response from the operator: Dear Tina, Thank you for sharing your experience. It’s wonderful to hear that you enjoyed such a memorable day exploring the stunning coastline, crystal-clear waters, and beautiful caves. Excursions like this are a fantastic way to experience the natural beauty of the destination. It sounds like a day filled with great moments, and we're very happy it became such a highlight of your holiday with Cretan Holidays.
via Tripadvisor
Wonderful experience
Very nice experience Very relaxing trip and the staff was very friendly
via Tripadvisor
5 stars
Really great boat tour beautiful sights and a great guide had a lovely time
via Tripadvisor
Best Sea in the world
Beautuful day and beautyful Sea. All valuable places and people
via Tripadvisor
Good to know
- Duration
- 5.5 hours
- Free cancellation
- Up to 24h before
- Minimum age to book
- All ages
- Availability
- Bookable today
- Runs on
- Wed, Fri
- Hotel pickup
- Included for all travelers
- Booked in 30 days
- 42
- Verdict
- Exceptional
Who runs this experience
Operated by Cretan Holidays, who run 37 experiences we rank across 7 cities, with an average Outty Ranking of 58.6.
See everything Cretan Holidays runsWhy this scores 87
The Outty Ranking is a weighted composite. Here is how this experience performed on each component.
Zakynthos Small Boat Tour to Keri Mizithres and Marathonisi: questions travelers ask
Practical detail on this experience, plus the wider planning questions for Zakynthos.
How much does Zakynthos Small Boat Tour to Keri Mizithres and Marathonisi cost?
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Prices start at $106 per person. The final price depends on the date, the time slot and the number of travelers, and peak weekends in Zakynthos usually price higher than midweek mornings. Live pricing and remaining availability are confirmed on the booking screen before you pay.
How long does Zakynthos Small Boat Tour to Keri Mizithres and Marathonisi take?
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Plan for about 5.5 hours from start to finish, not counting travel to the meeting point. Most travelers leave another 30 minutes on either side so the rest of the day in Zakynthos is not rushed.
Is Zakynthos Small Boat Tour to Keri Mizithres and Marathonisi worth it?
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It holds an Outty Ranking of 87 out of 100, which we label "Exceptional". That score blends traveler sentiment (4.9/5 across 121 reviews), the depth of that review evidence, recent booking momentum, value for money against comparable most highly reviewed in Zakynthos, and how flexible the cancellation terms are.
Can I cancel or reschedule Zakynthos Small Boat Tour to Keri Mizithres and Marathonisi?
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Yes. Cancel free up to 24 hours before the start time for a full refund. Inside that window the booking is non-refundable, and no-shows are not refunded.
Is Zakynthos Small Boat Tour to Keri Mizithres and Marathonisi suitable for kids and families?
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Yes, all ages are welcome. Families should still weigh the 5.5-hour running time, and strollers are easier on the earlier, quieter departures.
How far in advance should I book Zakynthos Small Boat Tour to Keri Mizithres and Marathonisi?
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Around 42 people booked this in the last 30 days, so popular slots go early. Two to three weeks ahead is comfortable in shoulder season, while summer weekends and holidays in Zakynthos can sell out a month out. Same-day spots do open up when other travelers cancel, so it is worth checking if you are already in town.
What should I bring or wear?
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Bring photo ID, your booking confirmation on your phone, a refillable water bottle and comfortable shoes. Dress for the weather in Zakynthos and add a light layer if any part of the 5.5-hour experience runs outdoors or after sunset.
Where does Zakynthos Small Boat Tour to Keri Mizithres and Marathonisi start and how do I get there?
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The exact meeting point and directions are on your voucher once you book, and they sit in central Zakynthos within reach of public transport. Arrive 15 minutes early: late arrivals are treated as no-shows by most operators.
What are the best things to do in Zakynthos?
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On Outty we rank every Zakynthos experience on the same 0 to 100 scale, and alongside this one the highest scorers right now include Ceramic Making Experience in Zakynthos, Half-Day Greek Cooking Class of Zakynthian Culture with Lunch, Zakynthos Turtle Tour Small Group Turtle Spotting & Turtle Island. The city page groups everything into most popular, highest reviewed, last minute and family-friendly so you can build a day around what actually delivers.
When is the best time to visit Zakynthos?
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Booking patterns follow the same curve: prices and queues climb in peak weeks, while shoulder season gives you better availability on the top-ranked experiences and more room to change plans.
How many days do you need in Zakynthos?
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Three full days covers the headline sights without sprinting. A workable rhythm is one anchor experience each morning, such as this one, an unhurried afternoon in a single neighborhood, then a food or nightlife booking in the evening. Five days lets you add a day trip outside the city.
Do I book through Outty or through the operator?
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Outty ranks and explains the experiences, then hands you to Viator to complete the booking with the operator directly. The price is the same as booking on Viator yourself, and Outty earns an affiliate commission on the referral, which is how the rankings stay free to read.
What is included in Zakynthos Small Boat Tour to Keri Mizithres and Marathonisi?
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Included: Lunch; In-vehicle air conditioning; and Tour guide in-person: English. Not included: Gratuities; and Drinks. Always check the voucher for the final list before you travel.
Does Zakynthos Small Boat Tour to Keri Mizithres and Marathonisi include hotel pickup?
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Yes, pickup is offered for every traveler from 208 listed pickup locations in and around Zakynthos. Be ready about 30 minutes before the start time.
What languages is Zakynthos Small Boat Tour to Keri Mizithres and Marathonisi offered in?
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It runs in English. Pick your language when choosing a date and time, as not every departure runs in every language.
Will I get instant confirmation and a mobile ticket for Zakynthos Small Boat Tour to Keri Mizithres and Marathonisi?
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Confirmation is sent by the operator after booking, usually within 48 hours; if it is not confirmed you are not charged. Mobile tickets are accepted, so you can show the voucher on your phone.
Is Zakynthos Small Boat Tour to Keri Mizithres and Marathonisi wheelchair or stroller accessible?
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The operator notes: Infants are required to sit on an adult’s lap. If accessibility is critical, contact the operator after booking to confirm arrangements for your date.
What happens to Zakynthos Small Boat Tour to Keri Mizithres and Marathonisi if the weather is bad?
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This experience depends on good weather. If it is canceled because of poor weather, you are offered a different date or a full refund.
What do travelers say about Zakynthos Small Boat Tour to Keri Mizithres and Marathonisi?
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Across 121 reviews averaging 4.9 out of 5, recurring themes include the guide, food and drink. Travelers single out the guide as the reason the experience works.
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