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World’s longest unsupported swim

500km Swim Stockholm-Helsinki

-Name: Jari Cennet Tammi

-Currently: Alicante, Spain training.

-Age: 63

-What: World’s longest unsupported Swim

-Where: Stockholm – Helsinki across Baltic Sea

-Start: 11th of June

-Distance: 500km

-Duration: 37 Days

-Daily swim: 13,7 km

-Calories burnt/Day: 4850

-Weight loss: 12kg (333gram/Day)

-Bags: 2x PRO DRYBAG 55L

-Total weight bags: 46 kg

Packed with tent, dryfood, watermaker and other essential gear

Photos: ©Jari Cennet Tammi.

Jari will on 10th of June begin the world’s longest unsupported swim from Stockholm, Sweden 500 km to Helsinki, Finland. A 37 day long extreme adventure where he will be averaging 13,7 km day.

In order to complete his really impressive challenge he will need to bring two 55 Liter bags with a total weight of 46 kg. Packed with tent, watermaker, dry food to cover all meals, swim gear and other essential gear.
The bags will then be placed on top of a Ruckraft in order to glide as smooth as possible behind Jari while swimming where each raft is attached with a bungy cord with safe distance behind him in heavy seas.
The bag float fully packed with Jari on top by itself and could be attached to each other as a raft in case of an emergency.
Jari is currenlty living down in Allicante, Spain where he’s training daily be filling up big jugs of water to get proper weight in the bags.
This is not the first adventure for Jari as he last summer swam 328km along the east coast of Sweden, Oaxen to Öregrund. A 32 day long adventure where Jari had to take one day off due to back problems.

Follow Jari’s preparation for the world’s longest unsupported swim, 500km across the Baltic Sea:

Jari Facebook @stockholmhelsingfors
Jari Instagram @swim_trek

GPS Position for 2023 world record attempt Länk

We will also update our social media regularly about Jari Länk.

Stay tuned for more information.

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