The Eudunda Sporting Complex serves as the start and finish for the trial, which extends into the surrounding areas before returning. The 2025 HARDI 24 Hour Trial holds significant standing: 101 years after the inaugural 24 Hour Trial began on King William Street, it remains described as “Australia's ultimate reliability trial” and a “true test of endurance.”
The format is straightforward: four lengthy laps, each designed to take approximately six hours. This means rhythm, patience, and machine longevity are as crucial as raw speed. Expert solo riders, sidecars, Clubman categories, Veterans, Masters, Ladies All Powers, and sweep riders all participate in the same intense enduro environment, with the Eudunda Sporting Complex as the destination they strive to return to.