Marathon 1 and Marathon 2 are mostly on trails and dirt roads.
Marathon 3 / Cairns Marathon is on dirt roads and bitumen.
Grand Slam Marathon 1
Last updated on 9 July 2025.
Elevation Gain 1,303 m, Elevation Loss: 1611 m
AllTrails map for Marathon 1: https://www.alltrails.com/explore/map/3m3d-marathon-1-new-course-for-2020-onwards-c494d95?u
Grand Slam Marathon 2
Last updated on 9 July 2025.
AllTrails map for Marathon 2 https://www.alltrails.com/explore/map/3m3d-marathon-2-course-2020-onwards-cbc462e?u=m&sh=vvy4ph
Grand Slam Marathon 3 and Cairns Marathon
Last updated on 9 July 2025
AllTrails map for Cairns Marathon / Marathon 3: https://www.alltrails.com/explore/map/3m3d-marathon-3-373cb8c?u=m&sh=vvy4ph