Onehunga Bay Reserve shapes this event: a coastal run and walk on a flat Auckland shoreline route, featuring road, path, and park surfaces. The Onehunga Half Marathon is part of the Run21 coastal half marathon series, offering a practical approach: arrive, find your wave, and run or walk at your chosen pace.
The course follows a flat, accessible route along the shoreline, suitable for those aiming for a fast road time and those preferring a steady pace. Competitive road runners, casual walkers, families, beginners, veterans, and hybrid athletes share the morning. Highly organized wave starts, based on expected finish time and discipline, facilitate this. A notable feature is the hybrid run/walk category, integrating run-walkers into the race plan from the start.