A thru-tramp takes somewhere between 50-80 days per island. The time depends on fitness, tenacity, weather, and how quickly you want to progress. 50 days is quick and would need a high degree of fitness and some luck with the weather. 80 days is leisurely.

To walk the entire length of the South Island of New Zealand via the Te Araroa Trail, most hikers should budget between 50 and 80 days. This roughly 1,300 km (800 mile) journey is a high-fidelity test of endurance, crossing rugged mountain passes, river valleys, and coastal forests. A grounded "through-hiker" pace usually averages about 20–25 km per day, but you must factor in "zero days" for rest and re-supplying in towns like Wanaka or Queenstown. The trail is significantly more challenging than the North Island, with sections like the Richmond Range requiring supportive focus and backcountry skills. For a 2026 hiker, the "Gold Standard" window to complete the South Island is from December to March, when the weather is most settled and river levels are lower. A supportive peer tip: don't rush the experience; the South Island features some of the most breathtaking, "Pura Vida" landscapes on Earth, and taking the full 80 days allows you to truly "soak in" the majesty of the Southern Alps and the turquoise waters of the Marlborough Sounds.