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3 Marathons in 3 Days Grand Slam

Kuranda QLD, Australia
7/18/2026 - 7/18/2026
Official site
Last updated: 15 July, 2025

In its fourteenth year, this event is held on the Atherton Tablelands, Queensland and finishes in Cairns on the Sunday.

Registrations close at 11.59pm on Sunday 13 July 2025. No late entries will be considered.

Date: Friday (Cairns Show Day) – Sunday, 18-20 July 2025 
Length: 42.2km to 126.6km
Event Organiser: Dynamic Running Ltd.
Race Director: Lorraine Lawson

Races

3M3D Grand Slam (126.6km), 18-20 July 2025. Competitors will complete the same course as the Cairns Marathon on the third day (we call that race ‘Marathon 3’).

Other entry options are:

  • Marathon 1, 18 July 2025
  • Marathon 2, 19 July 2025
  • Cairns Marathon, 20 July 2025

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