Saint Arnaud Loop Walk

Loop

* The Glacial Terraces: One of the most fascinating aspects of this walk is the geology. As the trail rises 150m, you are literally walking on the footprints of the ice age. The interpretive panels along the way do a brilliant job of explaining how the massive glaciers carved out the lake and dumped the gravel terraces you are standing on. * The Rotoiti Nature Recovery Project: You are walking through a "mainland island." This area is part of an intensive pest control program, and the results are visible everywhere. Look for the beech mistletoe (pikirangi). These hemi-parasitic plants produce stunning red and yellow flowers in the summer. Because they are a favourite snack for possums, their abundance here is a proud badge of honour for the local conservation efforts. * The Lake Rotoiti Viewpoints: While much of the walk is under the canopy, there are several "windows" through the trees on the upper terraces. These spots offer breathtaking photo opportunities of the lake and the St Arnaud Range. On a still day, the symmetry of the mountains reflecting in the water is nothing short of magical. * The Jetty Jump: While not technically on the trail, no visit to Kerr Bay is complete without walking to the end of the long wooden jetty. It’s the iconic Nelson Lakes photo spot, and if you’re feeling brave (and it’s summer), it’s the local "rite of passage" to take a plunge into the icy glacial waters.

Getting There

Getting to the trailhead is remarkably straightforward. From the main road in the St Arnaud village (Highway 63), turn onto Kerr Bay Road. Follow this to the very end, where you will find the shores of Lake Rotoiti.

There is ample parking available at the lake edge in Kerr Bay. You’ll find plenty of space near the boat ramps and the jetties. The trailhead starts adjacent to the Department of Conservation (DOC) campground. If you are staying in the village, it is a very short, pleasant walk or a one-minute drive to the bay. There are public toilets and fresh water available at the car park area, making it a very convenient "base camp" for your afternoon.

Wildlife Spotting

Thanks to the intensive trapping and predator control in the area, the birdlife on the Saint Arnaud Loop Walk is some of the best you will find on an easy-access track in the South Island.

As soon as you enter the forest, you’ll likely be greeted by the inquisitive South Island Robin (toutouwai). These friendly birds often hop down to the track to see if your boots have stirred up any delicious grubs in the dirt. You’ll also hear the melodic, bell-like chimes of the Bellbird (korimako) and the complex, flute-like songs of the Tūī.

Keep your eyes peeled for: * Kākā: These large, charismatic forest parrots are occasionally seen (and often heard) screeching overhead or tearing at bark to find sap. Fantail (pīwakawaka*): They will likely follow you for part of the walk, flitting around to catch the insects you disturb as you walk. Kererū: Listen for the heavy whoosh-whoosh* of wings; the New Zealand Pigeon is a frequent visitor to the fruiting trees in the area. * Kākāriki: If you see a flash of bright green and hear a rapid chattering, you’ve likely spotted a Red-crowned Parakeet.

Tip: The best time for birdwatching is early morning or late afternoon when the "dawn and dusk choruses" are at their peak. Bring a pair of binoculars if you have them, but often the birds are so bold here that you won’t even need them.

Seasonal Magic & Practical Tips

This is truly a walk for all seasons, with each offering a unique perspective: * Spring: The forest is at its most vibrant, and the birdlife is incredibly active. You’ll see the new growth on the beech trees and hear the forest come alive with song. * Summer: The perfect time for the shade of the forest. The mistletoe is in bloom, and the lake is (almost) warm enough for a swim after your walk. * Autumn: The air is crisp and clear, often providing the best visibility for views of the surrounding ranges. The light is softer, making for stunning photography. * Winter: This is a hidden gem in winter. The peaks of the St Arnaud Range are capped in thick snow, providing a dramatic backdrop. While the track might have a dusting of snow or frost, it generally remains accessible and magical.

Practical Tips: * Start Time: I recommend starting mid-morning to catch the light filtering through the beech canopy, or late afternoon to enjoy a golden hour glow on the mountains as you finish at the lakeshore. * What to Wear: Even on a warm day, the beech forest can be cool. Bring a light windbreaker or fleece. Sturdy walking shoes or sneakers are fine, but if it has been raining, hiking boots are better for the muddy patches. * Sun & Sandflies: Even under the trees, the NZ sun is strong—apply sunscreen. Also, be aware that the lakeside is home to the infamous New Zealand sandfly. They are harmless but itchy; bring a bit of repellent for when you are standing still at the viewpoints or the jetty. * Dog Policy: Please note that because this walk is within a National Park and a sensitive nature recovery area, dogs are not permitted. This helps protect the native birdlife that makes this walk so special.

Local & Regional Context

The area surrounding Lake Rotoiti (the "little lake") is steeped in history. For Māori, the lake is known as Te Roto-iti-whenua-a-Poutu. It was a significant site for gathering food and a key link in the travel routes between the east and west coasts of the South Island.

Geologically, you are standing in a landscape shaped by massive forces. The Alpine Fault, New Zealand’s most significant geological feature, runs very close to here. Over millions of years, tectonic movement and glacial advances have carved the deep U-shaped valleys that now hold the lakes.

The Saint Arnaud Loop Walk is a microcosm of the wider Nelson Lakes region—a place where the rugged Southern Alps meet the lush forests of the north. The village of St Arnaud itself has a lovely, old-world "alpine village" feel, having served as a gateway for trampers and hunters for generations. Walking this loop gives you a sense of being part of that long history of people coming to this place to find peace and fresh mountain air.

After the Walk

After 90 minutes of fresh air, you’ll likely have worked up an appetite. St Arnaud might be small, but it punches well above its weight for post-hike refueling:

* The Alpine Lodge: Located just 500m from the lake, this is a local institution. It’s cozy, charming, and features a cracking fireplace in the winter. Their menu uses great local ingredients, and it’s the perfect spot for a hearty lunch or a celebratory drink at the full bar. * St Arnaud Alpine Store: If you’re looking for something a bit more casual, this is your go-to. They serve excellent coffee and have a great café menu. It’s also the place to grab a classic Kiwi pie or some basic groceries if you’re heading off on a longer adventure. * The Clinker Café: For those with a sweet tooth, the Clinker is a must. It’s a European-style café with a fantastic array of cakes and sweets. The atmosphere is warm and inviting—ideal for sitting back and scrolling through the photos you just took on the trail.

Whether you're finishing with a coffee or a cold beer, the slow pace of life in St Arnaud is the perfect way to wrap up your day in the Nelson Lakes National Park.

500m away

Offers takeaway food, a café menu, and excellent coffee, along with basic groceries for stocking up before or after your walk.