GW - 08 Kepler Track

The GW - 08 Kepler Track is a 60 km loop trail in Fiordland National Park, New Zealand, climbing roughly 1,300 m of elevation over 3 to 4 days. Rated moderate, it is the only Great Walk built specifically for hiking, threading from beech forest up to an exposed 1,400 m alpine ridge before dropping back to lakeside flats.

About the GW - 08 Kepler Track

The Kepler Track is one of New Zealand's nine official Great Walks, a network of premier multi-day trails managed by the Department of Conservation (DOC). Unlike most New Zealand long-distance routes, which were stitched together from old mining, stock and tramping paths, the Kepler was purpose-built for walkers. It opened in February 1988 as part of the National Parks Centennial, and the surveyor James McKerrow named the surrounding Kepler Mountains after the 17th-century German astronomer Johannes Kepler.

The trail forms a 60 km loop starting and finishing near Te Anau, the gateway town to Fiordland on New Zealand's South Island. From the Lake Te Anau Control Gates it climbs through dense red and silver beech forest, breaks out above the treeline onto a long, dramatic ridge with panoramic views over Lake Te Anau and the South Fiord, and then descends to the U-shaped Iris Burn valley before returning along the shores of Lake Manapouri. That combination of ridgetop alpine walking, glacier-carved valleys, wetlands and lakeside forest in a single circuit is what gives the Kepler its reputation.

The route is graded moderate: the surface is well-formed and benched throughout, but the long alpine section between Luxmore Hut and Iris Burn Hut is fully exposed to Fiordland's notoriously fast-changing weather. The highest point, the Luxmore Saddle, sits at 1,400 m, while the lowest point on Lake Manapouri is just 178 m above sea level. Construction was assisted by Operation Raleigh expedition volunteers in 1986–87, and the track has since become so iconic that it hosts the annual Kepler Challenge, a 60 km mountain run whose winners complete the entire loop in under five hours.

Route Overview & Stages

Most walkers tackle the Kepler over three or four days, sleeping in DOC huts. The table below breaks the standard clockwise direction into its natural sections. A popular three-day variant exits at the Rainbow Reach swing bridge instead of returning to the Control Gates, trimming the final lakeside leg.

The crux of the whole walk is Stage 3, the 14.6 km traverse from Luxmore Hut to Iris Burn Hut. Almost the entire leg runs above the treeline on a knife-edge ridge, with no shelter beyond two emergency huts (Forest Burn and Hanging Valley). In good weather it is the most spectacular day on any Great Walk; in bad weather it is the most serious. Most walkers leave Luxmore Hut early to cross the ridge before the afternoon wind picks up, then enjoy a long, knee-testing descent of around 700 m through tussock and beech to the sheltered Iris Burn valley floor.

The Kepler can be walked in either direction, but the clockwise route described here — climbing to Luxmore first — is the most popular because it tackles the big ascent on fresh legs and saves the gentle lakeside stages for the end. Allowing four days rather than three lets you bank a weather day for the ridge, summit Mount Luxmore at leisure and swim at the Iris Burn Waterfall, turning a fast tramp into a far more relaxed circuit.

Highlights & Points of Interest

• Luxmore Saddle (1,400 m) — the highest point on the track, with a 360-degree sweep over Lake Te Anau, the Murchison Mountains and the Jackson Peaks.
• Mount Luxmore summit (1,472 m) — a short, optional 20-minute climb from the main trail to the true peak, well worth it on a clear morning.
• Luxmore Caves — a cluster of around 30 limestone caves a few minutes from Luxmore Hut; bring a headtorch to explore the larger chambers.
• Luxmore Hut deck — perched at 1,085 m above Lake Te Anau, arguably the finest sunset viewpoint of any New Zealand hut.
• The alpine ridge — the exposed traverse past the Forest Burn and Hanging Valley emergency shelters, with views down into glacier-carved hanging valleys.
• Iris Burn Waterfall — a 15-minute side trip from Iris Burn Hut to a cascade with a cold but tempting swimming pool.
• The Big Slip — a massive 1984 landslide scar in the Iris Burn valley that the trail crosses, now slowly regenerating.
• Lake Manapouri & Moturau Hut — a sandy beachfront on New Zealand's second-deepest lake, perfect for a final-night swim.

Best Time to Hike the GW - 08 Kepler Track

The official Great Walk season runs from late October to the end of April, when DOC fully services the huts, staffs them with rangers and operates a booking system. This is also when the weather is most cooperative, though Fiordland is one of the wettest inhabited regions on Earth and rain can arrive any month — Te Anau averages over 1,200 mm of rainfall a year.

The single best month to hike the Kepler Track is February. By late summer the alpine ridge is reliably clear of lingering snow, daylight is long (around 14–15 hours), settled high-pressure systems are more frequent, and night-time temperatures at Luxmore Hut stay above freezing. December and January are warmer but busier and bring the heaviest sandfly activity at the lake-level campsites; March offers crisp, stable conditions with thinning crowds.

As of 2026, hiking outside the Great Walk season (May to mid-October) is only recommended for experienced, well-equipped alpine trampers. The exposed ridge between Luxmore and Iris Burn carries genuine avalanche and whiteout risk in winter, the bridges may be removed, and huts run on a reduced backcountry-hut standard with no gas or wardens. Whatever month you choose, check the DOC forecast the morning of your ridge crossing — strong winds, not rain, are the most common reason walkers turn back.

Practical Information

Accommodation

During the Great Walk season you must stay in DOC huts or designated campsites, and both require advance booking through the official DOC Great Walks system. There are three main huts on the loop:

The huts are equipped with bunks and mattresses, gas cookers, running water and flush or composting toilets, but no cooking utensils or lighting. Note that there is no camping at Luxmore Hut, so the high alpine section must be done as a hut night. Before and after the walk, Te Anau itself has a full range of hostels, holiday parks and hotels from roughly €25 for a dorm bed.

Getting There & Back

The trailhead at the Lake Te Anau Control Gates is about 4.6 km (a one-hour walk or short shuttle) from the town of Te Anau. Te Anau is reached by road from Queenstown, roughly a 2-hour 15-minute drive (170 km), and Queenstown Airport is the nearest airport with domestic and trans-Tasman flights. Invercargill is about a 2-hour drive to the south. Daily bus services connect Queenstown and Te Anau in summer.

Because the loop ends back near where it starts, logistics are simpler than on a true point-to-point Great Walk. Local operators run shuttles between Te Anau, the Control Gates and the Rainbow Reach exit, and water-taxis cross Lake Te Anau to Brod Bay for walkers who want to skip the first flat stage. Planning your daily distances and shuttle pick-ups is easy to map out in the HikeLoad hike planner.

Permits & Fees

No separate wilderness permit is required, but during the Great Walk season every night in a hut or campsite must be pre-booked through DOC, and bookings for the peak summer period typically open several months ahead and sell out fast. Budget roughly €110–€165 for two hut nights plus any shuttle or water-taxi transfers. Full pricing, booking dates and hut details are published by the Department of Conservation, the official authority for the track.

Gear & Packing List

The Kepler demands gear that copes with everything from beech-forest humidity to a wind-blasted 1,400 m ridge in a single day. A fully waterproof shell, warm midlayers, gloves and a hat are non-negotiable even in February. Because the huts supply mattresses and cookers, you can travel relatively light — a 45–60 litre pack is ample for a three-night Great Walk.

For an ultralight hut-based loop like this, a frameless or minimal-frame pack works well; the 2400 Windrider and the larger 3400 Windrider are popular Dyneema choices that shrug off Fiordland rain. If you prefer a more structured carry with a hipbelt for the long descent days, the Aircontact Lite 45+10 is a comfortable option. For ideas on which packs hold up best on multi-day alpine routes, see our roundup of the best ultralight backpacks of 2026. Because hut kitchens have gas but no food, plan your meals carefully — our guide to how many calories you need hiking a full day will help you carry enough fuel without overpacking, and you can build your menu in the HikeLoad food planner.

Similar Trails You Might Like

If the Kepler's mix of alpine ridges and lake views appeals, Fiordland's other showcase Great Walk is the obvious next step. The neighbouring trail offers rainforest, waterfalls and a famous mountain pass, and the two are often combined into a single South Island trip. For a completely different alpine adventure, our guide to a celebrated Balkan crossing pairs well with a Kepler-style itinerary.

• GW - 07 Milford Track (New Zealand) — the "finest walk in the world" through Fiordland's rainforest and Mackinnon Pass.
• How to Hike the Theth to Valbona Trail in Albania (2026 Guide) — a dramatic alpine pass crossing in the Albanian Alps.

Frequently Asked Questions

When is the best time to hike the Kepler Track?
February is the single best month. By late summer the 1,400 m alpine ridge is reliably clear of snow, daylight lasts around 14 hours and settled weather is more common. The full Great Walk season runs from late October to the end of April, when DOC services the huts and the booking system operates.

How difficult is the Kepler Track?
It is rated moderate. The track is well-formed and benched throughout, so no technical skill is needed, but the 14.6 km alpine traverse between Luxmore and Iris Burn huts is fully exposed to Fiordland's fast-changing weather. Reasonable fitness and proper wet- and cold-weather gear are essential for the ridge crossing.

How many kilometres do you walk per day?
Over a standard three- to four-day loop you cover the 60 km in legs of roughly 14 to 16 km. The longest day is usually Iris Burn Hut to Moturau Hut at 16.2 km, while the alpine ridge day is 14.6 km. The first and last lakeside sections are shorter, around 6 to 10 km each.

Where do you sleep on the Kepler Track?
You stay in DOC huts at Luxmore (54 beds), Iris Burn (50 beds) and Moturau (40 beds), all bookable for around €55 a night. Camping is available at Brod Bay and Iris Burn campsites for about €13, but there is no camping at Luxmore, so the alpine night must be spent in the hut.

Do you need a permit for the Kepler Track?
There is no separate wilderness permit, but during the Great Walk season every hut and campsite night must be pre-booked through the Department of Conservation. Peak summer bookings open months ahead and sell out quickly, so reserve early. Budget roughly €110 to €165 for two hut nights plus any shuttle transfers.