trithings

Events calendar

Triathlons, sportives, runs and swims worth planning a season around, from IRONMAN and Challenge to the Dutch favourites. 36 events in 10 countries so far.

A date is shown only when the organiser has published it (tap it to see where). Otherwise you see the month the event is usually held, so check the official site before you book. Planning a race? The race time and pacing and fuelling tools help.

36 events

January

  • Egmond Halve Marathon

    Run · Half marathon · Egmond aan Zee, Netherlands

    21.1 km

    Beach and dunes in midwinter.

    Usually JanuaryOfficial site

March

  • NN CPC Loop

    Run · Half marathon, 10 km and 5 km · Den Haag, Netherlands

    Usually MarchOfficial site

April

  • Amstel Gold Race Toerversie

    Bike · Sportive · Valkenburg, Zuid-Limburg, Netherlands

    Ride the Limburg hills the day before the pro race.

  • TCS London Marathon

    Run · Marathon · London, United Kingdom

    42.2 km

    Two days in 2027, for a record 100,000 runners.

  • NN Marathon Rotterdam

    Run · Marathon · Rotterdam, Netherlands

    42.2 km

    Over the Erasmusbrug.

    Usually AprilOfficial site
  • Paris-Roubaix Challenge

    Bike · Sportive · Roubaix, France

    The cobbled sectors of the Hell of the North, finishing in the Roubaix velodrome.

    Usually AprilOfficial site
  • Ronde van Vlaanderen Cyclo

    Bike · Sportive · Oudenaarde, Flanders, Belgium

    The Flemish cobbles and climbs the day before the Tour of Flanders.

    Usually AprilOfficial site
  • Schneider Electric Marathon de Paris

    Run · Marathon · Paris, France

    42.2 km

    Usually AprilOfficial site

May

  • IRONMAN 70.3 Mallorca

    Triathlon · Middle distance · Alcúdia, Mallorca, Spain

    Usually MayOfficial site
  • IRONMAN Lanzarote

    Triathlon · Full distance · Puerto del Carmen, Lanzarote, Spain

    Usually MayOfficial site
  • RideLondon

    Bike · Sportive · London and Essex, United Kingdom

    Usually MayOfficial site

June

  • DTS Grand Prix ZandvoortBrian’s pick

    Triathlon · Sprint and Olympic distance · Zandvoort, Netherlands

    Swim in the sea, then bike and run on the Circuit Zandvoort F1 track.

    Usually JuneOfficial site
  • Great North Swim

    Swim · Open water · Windermere, Lake District, United Kingdom

    Usually JuneOfficial site
  • IRONMAN 70.3 Westfriesland

    Triathlon · Middle distance · Hoorn, Netherlands

    1.9 km swim, 90 km bike, 21.1 km run

    Sells out fast.

    Usually JuneOfficial site
  • IRONMAN Hamburg

    Triathlon · Full distance · Hamburg, Germany

    Usually JuneOfficial site

July

  • DATEV Challenge Roth

    Triathlon · Full distance · Roth, Germany

    3.8 km swim, 180 km bike, 42.2 km run

    Famous for the crowds on the Solarer Berg climb.

  • Maratona dles Dolomites

    Bike · Sportive · Alta Badia, Italy

    Closed Dolomite passes; 2027 is the 40th edition.

  • L'Étape du Tour

    Bike · Sportive · A Tour de France mountain stage (changes every year), France

    Ride a real Tour de France stage on closed roads.

  • 10 van NoordwijkBrian’s pick

    Run · 10 km and 5 km · Noordwijk, Netherlands

    Starts on the boulevard and runs through the dunes with sea views.

    Usually JulyOfficial site
  • DTS HLMRMEERBrian’s pick

    Triathlon · Middle, Olympic and Sprint distance · Haarlemmermeerse Bos, Hoofddorp, Netherlands

    Middle: 1.9 km swim, 90 km bike, 21.1 km run

    Swim in the Haarlemmermeerse Plas; the middle distance bike takes in the Rondje Ringvaart.

    Usually JulyOfficial site
  • IRONMAN Vitoria-Gasteiz

    Triathlon · Full distance · Vitoria-Gasteiz, Spain

    Usually JulyOfficial site

August

  • IRONMAN Copenhagen

    Triathlon · Full distance · Copenhagen, Denmark

    Usually AugustOfficial site
  • IRONMAN Kalmar

    Triathlon · Full distance · Kalmar, Sweden

    Usually AugustOfficial site
  • IRONMAN Tallinn

    Triathlon · Full distance · Tallinn, Estonia

    Usually AugustOfficial site

September

  • Amsterdam City Swim

    Swim · Open water (charity) · Amsterdam canals, Netherlands

    Swim through the canals for ALS research; a record 3,300 swimmers in 2026.

    Usually SeptemberOfficial site
  • BMW Berlin Marathon

    Run · Marathon · Berlin, Germany

    42.2 km

    Usually SeptemberOfficial site
  • Challenge Almere-AmsterdamBrian’s pick

    Triathlon · Full and Middle distance · Almere, Netherlands

    Full: 3.8 km, 180 km, 42.2 km. Middle: 1.9 km, 90 km, 21.1 km

    One of the oldest long distance triathlons; flat polder roads below sea level.

    Usually SeptemberOfficial site
  • Dam tot Dam Cycling Classic

    Bike · Sportive · Amsterdam and Zaandam, Netherlands

    Part of the Dam tot Dam weekend.

    Usually SeptemberOfficial site
  • Damloop by NightBrian’s pick

    Run · 8 km (5 miles) · Zaandam, Netherlands

    Through the lit-up streets of Zaandam on the eve of the Dam tot Damloop, up to 15,000 runners.

    Usually SeptemberOfficial site
  • Great North Run

    Run · Half marathon · Newcastle to South Shields, United Kingdom

    21.1 km

    Usually SeptemberOfficial site
  • IRONMAN Wales

    Triathlon · Full distance · Tenby, United Kingdom

    Usually SeptemberOfficial site
  • NN Dam tot Damloop

    Run · 10 miles · Amsterdam to Zaandam, Netherlands

    16.1 km

    From the Prins Hendrikkade in Amsterdam, under the IJ, to the Peperstraat in Zaandam.

    Usually SeptemberOfficial site

October

  • IRONMAN Barcelona

    Triathlon · Full distance · Calella, Spain

    Usually OctoberOfficial site
  • TCS Amsterdam Marathon

    Run · Marathon, half marathon and 7.5 km · Amsterdam, Netherlands

    Finishes in the Olympic Stadium.

    Usually OctoberOfficial site

November

  • Zevenheuvelenloop

    Run · 15 km · Nijmegen, Netherlands

    Usually NovemberOfficial site

December

  • Valencia Marathon

    Run · Marathon · Valencia, Spain

    42.2 km

    Flat and fast, popular for personal bests.

    Usually DecemberOfficial site