Immerse yourself in the heart of Stockholm for an unforgettable aquatic adventure with the 46th annual Riddarfjärd Swimming Race, set to take place on August 16th, 2025. This unique open water event offers swimmers a rare opportunity to glide through the serene waters that flow right through the city’s vibrant core. The race course stretches for exactly one mile (1609 meters), starting at the iconic City Hall and finishing at Rålambshovsparken, providing participants with an unparalleled view of Stockholm's historic landmarks. Early registration not only guarantees a spot in this prestigious event but also comes with significant discounts, including a generous 30% off for early birds. Adding to the excitement is the Swim Test Race, open to all competitors and non-competitors alike. This shorter sprint over 200 meters at the finish line allows swimmers of all levels to test their skills in a scenic setting. For those looking to enhance their swimming experience with top-quality gear, Riddarfjärdssimningens sponsor swimshop.se offers an extensive range of equipment including goggles and other essential items. Visit the official website for more information on race details and how you can participate in this celebrated event that has been a beloved part of Stockholm’s summer traditions since its inception. Experience the blend of history, natural beauty, and competitive spirit as you take to the waters surrounding one of Europe's most picturesque cities.
Races Offered
Riddarfjärdssimningen 2026 - 3200m
Aug 22, 2026
straighten
Distance —
3.2K
terrain
Type —
Water sports
timer
09:05
sell
€59.09
Riddarfjärdssimningen 2026 - 1609m
Aug 22, 2026
straighten
Distance —
1.6K
terrain
Type —
Water sports
timer
11:00
sell
€50.00
Weather History
These values represent the 3-year monthly averages for August in Stockholm.
thermostatTemperature
13.4° / 20.3°
wb_sunnyFeels like
12.0° / 18.6°
light_mode
Avg sunshine hours
10h 46m
water_drop
Avg rainfall
2.4 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
11.4 km/h (Light breeze)
opacity
Sweat loss rate
Moderate
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Moderate (4.9)
humidity_mid
Humidity
77.6%
wb_twilight
Sunrise
05:07
nightlight
Sunset
20:35
About Stockholm
Learn more about the host city, Stockholm.
Stockholm is Sweden's capital and largest city, with nearly a million inhabitants in the city, and 2.4 million within Stockholm County. The inner city is made up of 14 islands across Lake Mälaren and three streams into the brackish Baltic Sea, with the Stockholm archipelago with some 24,000 islands, islets and skerries. Over 30% of the city area is made up of waterways, and another 30% is made up of green areas. Air and water are said to be the freshest of any European capital. Stockholm hosts the Nobel Prize ceremony and has around 70 museums.