Open Water Calendar 2026

Calendar information includes dates, name, swimming distances and link to race/camp or adventure swims. You may forward us requests of adjustments/extra material sending e-mail to following address openwatercalendar@openwatercalendar.com .

MAY: 
2-9 > Trektoes Swim Camp Turkey (Kas) https://elamyssport.com/muut-lajit/avovesiuintileiri-kasissa/ (Cancelled)
9-10 > Oceanman Costa Azahar Spain (Benicassim) 2 km/5 km/10 km https://oceanmanswim.com/costaazahar-spain/
15-18 > Ultra Swim 33.3 km Croatia (#12) 33,3 km https://ultraswim333.com/2026croatia
23-24 > Oceanman Cattolica Emilia Romagna 2 km/5 km/10 km https://oceanmanswim.com/cattolica-italy/
23-29 > Best Fest Swim Festival Spain (Mallorca) 10 km/7 km/5 km/3,8 km/3 km https://bestopenwater.com/
30 > La Gran Fondo Italy (Sicilia) 12 km/20 km https://siciliaopenwater.com/eventi/la-gran-fondo/
30 > UltraOceanman Spain 21 km https://oceanmanswim.com/tabarca-spain/

JUNE:
8 > Open Water Vantaa Triathlon Finland (Vantaa) 1,5 km https://vantaatriathlon.fi/
10 > Zeus Open Water Grand Prix Portugal (Tomar) 1,5 km/3 km/25 km https://www.swim-together.com/open-water-race-calendar
12-14 > Open Water Swim Camp Tampere (Varala) https://varala.fi/avovesiuintileiri/
12-14 > Great North Swim Weekend England (Windermere) 5 km/10 km https://greatswim.org/great-north-swim/
12-14 > Oceanman Lago Dórta Italy 2 km/5,5 km/14 km https://oceanmanswim.com/lagodorta-italy/
15 > Stockholm Open Water Race Sweden 1,9 km/3,8 km https://raceid.com/sv/races/14192/about
20-21 > Neptune Challenge Denmark Copenhagen https://neptunechallenge.dk/ (Backyard)
23 > Open Water Swim 2 km Espoo (Kaitalampi) 2 km https://heltri.fi/harjoituskilpailut-heltri-cup/ 
26-28 > Lane 4 Swim Camp Finland (Pajulahti) https://www.lane4.fi/lane4-avovesiuintileiri-pajulahdessa-26-28-6-2026/ (Camp)
26-27 > Saimaa Puruvesi (Naaranlahti) 2,5 km/5 km/10 km https://naaranlahti.com/p/68/puruvesi-uinti-2762025
26-28 > Verdon Swim Experience France (Lac de St Croix) 6 km https://verdonswimexperience.fr/?lang=en
28 > OWEF Jussarö Open Water 7 km https://www.instagram.com/openwaterexperiencefinland/ (Day trip)
28 > Vansbrosimningen Sweden 10 km https://vansbrosimningen.se/
13/19/26 > Capri Napoli Ultra-Marathon Italy 36 km https://web.caprinapoli.com/ (Elite Swimmers)

JULY:
5 > Achensee Long Distance Event Austria (Tirol) 1 km /5 km/9 km https://www.achensee.com/en/long-distance-swim-event-tyrol/
5 > Lestijoen elämysuinnit Finland (Lestijärvi)  8 km https://visitlestijarvi.fi/ (No competition)
10 > The Dart 10k England (South Devon) 10 km https://www.levelwater.org/dart10k
12 > Swim The Arctic Circle (Juoksengi) 2 km/3 km https://swimac.eu/fi/
18 > Lake Balaton Hungary 2,6 km/5,2 km https://www.balaton-atuszas.hu/en/
24-27 > Ultra Swim 33.3 km Switzerland #14 (Lake Geneva) https://ultraswim333.com/2026switzerland
26 > Viikinsaaren ympäriuinti Finland (Tampere) 2,1 km https://tatu.fi/viikinsaaren-ympariuinti/
29 > Savonlinnan halkiuinti 0,8 km https://savonlinnanuimaseura.fi/

AUGUST:
1 > Downhill Swim Kuusamo 12 km/24 km https://downhillswim.fi/
1 > Ärjä Arctic Swim Challenge Finland (Kajaani) 10 km https://visitkajaani.fi/palvelu/arja-arctic-swim/ (20 participants)
1 > Glommadyppen Norway (Oslo) 11 km/6 km/2 km https://www.glommadyppen.no/en/
8 > Vuoksi Swim Finland (Imatra) 4km/8km/10 km https://vuoksiswim.fi/
8 > Kaukajärven yliuinti Finland (Tampere) n. 1 km/ 1,8 km https://www.kaukajarvensauna.fi/kaukajarven-yliuinti/
8 > Ärjä Arctic Swim Finland (Kajaani) 2 km https://luonnollisesti.fi/arja-arctic-swim-8-8-2026/
9 > Ärjä Arctic Swim Challenge 2 Finland (Kajaani) 10 km https://visitkajaani.fi/palvelu/arja-arctic-swim/ (20 osallistujaa)
8 > Vidösternsimmet Sweden (Värnamo) https://vidosternsimmet.com/
9 > Thames Marathon England (London) 5,5 /9/13 km https://www.facebook.com/HenleySwim
15 > Napapiirin uitto Finland (Rovaniemi) 8,5 km/4 km/1,5 km https://napapiirin-uitto.webnode.fi/
16 > Open Water Finnish Championships (Espoo) 5 km https://www.uimaliitto.fi/uinti/avovesiuinti/avovesiuinnin-sm-kilpailut-2026/
16 > Savonlinna-ympäriuinti Finland 3,3 km https://tapahtumat.savonlinna.fi/fi-FI
18-21 > Ultra Swim 33.3 km Greece (Skopelos) #15 https://ultraswim333.com/2026greece
21-30 > European Masters Aquatics Slovakia (Samorin) https://europeanaquatics.org/
28-29 > Copenhagen Swim Denmark 10 km/2 km/1 km https://copenhagenswim.com/en/

SEPTEMBER: 
2-5 > Ultra Swim 33.3 km Montenegro #16 https://ultraswim333.com/2026montenegro
4-5 > Wörthersee Austria (Klagenfurt) 34 km/17 km/10 km/5 km/3 km https://woerthersee-swim.com/en/woerthersee-swim-event/
6 > X-Waters Lake Bled Slovenia 5 / 10 km https://x-waters.com/events/slovenia/?lang=en
12 > Dock2Dockm England (London) 5/10/15/20 km https://lovesportsevents.co.uk/
12 > Swim Party Portugal (Algarve), https://swimparty10km.com/
13-19 > Trektoes Swim Camp Croatia (Seget Donji) https://www.trektoes.fi/ulkomaanleirit/kroatianavovesiuintileiri
14-21 > Lane 4 Swim Camp Italy (Puglia) https://www.lane4.fi/open-water-swimming-camp-puglia-region-italy-8-15-9-2025/

OCTOBER:
17-18 > Ultra Swim 16,65 km Barcelona (Costa Blanca) #17 https://ultraswim333.com/2026barcelona

(Last update 23.04.2026)