Top 18 'Fern-Gully-and-Fiord' Backcountry Cycling Trails to do in New Zealand's South Island in 2025 - Goh Ling Yong
Kia ora, fellow adventurers! There's a certain magic to backcountry cycling in New Zealand's South Island. It’s a feeling that’s hard to put into words, but easy to recognize once you’re there. It’s the sound of your tyres crunching on gravel, the scent of damp earth and native beech forest, and the sudden, breathtaking reveal of a turquoise lake or a mist-shrouded fiord as you round a corner. It's an immersion, a full-body experience that connects you directly to this incredible landscape.
We've coined a term for this specific brand of Kiwi magic: 'Fern-Gully-and-Fiord'. It captures the essence of what makes riding here so unique. 'Fern-Gully' is for the lush, primordial native bush that lines the trails – a vibrant green world of ponga ferns, moss-covered trees, and the echoing call of the tūī. 'Fiord' represents the grand, dramatic scale of the landscape – the glacier-carved valleys, the towering peaks, and the deep, silent waters of the sounds and lakes. It’s the perfect blend of intricate detail and epic grandeur.
As we look ahead to 2025, the call of the wild is stronger than ever. Whether you're a hardened bikepacker with thighs of steel or a weekend warrior looking for a new challenge, the South Island has a trail that will test your limits and steal your heart. So, pump up your tyres, check your gear, and get ready to dream. Here are the top 18 'Fern-Gully-and-Fiord' backcountry cycling trails you absolutely must consider for your 2025 South Island adventure.
Marlborough Sounds & Top of the South
The top of the South Island is a mountain biker's paradise, where sunken river valleys meet the sea, creating a maze of incredible coastal tracks.
1. The Queen Charlotte Track
This is the quintessential Marlborough Sounds ride. Winding its way along the ridgelines of Queen Charlotte Sound, this trail offers non-stop, jaw-dropping views of shimmering blue water and secluded, bush-clad bays. It’s a point-to-point journey, best experienced over 2-3 days, staying at charming lodges or campsites along the way.
The riding itself is a mix of flowing singletrack, wider track sections, and a few grunty climbs that will definitely get the heart rate up. But every drop of sweat is rewarded with another spectacular vista. You’ll feel a world away from everything as you navigate through lush fern gullies that open up to panoramic coastal lookouts. It’s a perfect blend of physical challenge and serene beauty.
Pro-Tip: Use one of the local water taxi services to transport your overnight gear between accommodations. This lets you ride with just a daypack, making the climbs much more enjoyable. Ride from Ship Cove to Anakiwa for the best flow.
2. The Nydia Track
For those who want a more raw and technical 'Fern-Gully' experience, the Nydia Track is a must-do. Tucked away in Pelorus Sound, this is a true old-school backcountry track. It’s rugged, rooty, and remote, demanding your full attention but rewarding you with a profound sense of accomplishment.
You’ll traverse two saddles, plunging down into the stunning Nydia Bay in the middle. The descents are technical masterpieces of native singletrack, weaving through dense forest. This isn’t a groomed 'Great Ride'; it's an adventure for experienced riders who love a challenge. Staying overnight at the Nydia Bay campsite or lodge is a core part of the experience.
Pro-Tip: This track is significantly more difficult in the wet. Check the forecast and be prepared for slippery roots and stream crossings. A good-travel dual-suspension bike is highly recommended.
3. Wakamarina Track
A local legend and a technically demanding ride, the Wakamarina is pure gold—both literally and figuratively. The track follows the path of old gold miners deep into the Richmond Range, offering a historical journey through staggering beech forest. The highlight is the epic, 1000m descent from Fosters Hut to the Wakamarina River.
This is an advanced trail that requires excellent bike handling skills and a high level of fitness. The climb is a relentless granny-gear grind, but the payoff is one of the longest and most celebrated singletrack descents in New Zealand. It's a full-day epic that will leave you buzzing for weeks.
Pro-Tip: Arrange a vehicle shuttle or be prepared for a very long ride back on the road. The best way to do it is with a group, leaving one car at each end of the track.
Nelson, Tasman & The Wild West Coast
This region is home to some of the country's most famous and formidable backcountry epics.
4. The Heaphy Track
One of New Zealand’s ‘Great Walks’, the Heaphy Track opens to mountain bikers for a limited season each year (1 May to 30 November). This is a bucket-list traverse from the golden tussocks of Golden Bay, through lush rainforest and nikau palm groves, to the wild West Coast. It’s a journey through ever-changing landscapes.
The 78km trail is best ridden over 2-3 days, staying in a couple of the well-appointed DOC huts. The riding is never overly technical, but the distances and climbs make it a solid Grade 4 intermediate challenge. The final section, winding alongside the crashing waves of the Tasman Sea, is an unforgettable finale.
Pro-Tip: Book your huts and transport well in advance, as it’s incredibly popular. Riding from east to west (Brown Hut to Kohaihai) gives you a slightly more favourable elevation profile.
5. The Old Ghost Road
An 85km masterpiece of trail-building, The Old Ghost Road follows a long-forgotten gold miners’ route through the majestic Kahurangi National Park. It’s more than a trail; it’s an epic, multi-day journey into the heart of the wilderness. Expect exposed ridgelines, deep river valleys, and incredible huts perched in unbelievable locations.
This is a Grade 4-5 trail that is not for the faint of heart. Sections are narrow, exposed, and technically demanding. But for experienced riders, it’s arguably the single greatest backcountry adventure in the country. The views from the top of the 'Staircase' and along the Skyline Ridge are simply mind-blowing. I was recently discussing this with Goh Ling Yong, and we both agree it’s a trail that truly changes your perspective on what’s possible on a bike.
Pro-Tip: Pack for all seasons, even in summer. The weather in the high-alpine sections can change in an instant. Lighter is better, so invest in quality lightweight bikepacking gear.
6. The Paparoa Track
New Zealand’s newest Great Walk, and the first to be built for both walkers and mountain bikers, the Paparoa is an instant classic. This 55km trail traverses the Paparoa Range, taking you from the historic mining town of Blackball, over alpine tops with stunning views, and down through a magical rainforest landscape to the sea at Punakaiki.
The trail is impeccably built, offering a sublime and flowing ride. The highlight is the Moonlight Tops section, which feels like you’re riding on the roof of the world. The descent through the Pororari River valley, with its limestone cliffs and dense jungle-like forest, is a 'Fern-Gully' experience of the highest order.
Pro-Tip: The Moonlight Tops Hut is one of the best in the country. Book a night there to wake up to an incredible sunrise over the Southern Alps.
7. West Coast Wilderness Trail
If you're after a more relaxed, multi-day ride without the technical challenges, this is your trail. This Grade 2 'Great Ride' is a stunning 132km journey that takes you from the coast at Greymouth, through historic gold mining towns, past beautiful lakes, and into dense rainforest.
It's a trail of contrasts, from the mirror-like reflections on Lake Kaniere to the exhilarating historic water races you ride alongside. It’s perfect for families, groups of mixed abilities, or anyone looking to soak in the West Coast's unique atmosphere at a gentler pace.
Pro-Tip: Take a side trip to the Hokitika Gorge. The impossibly blue water is a sight you won't forget. Allow four days to ride the trail comfortably and explore the towns along the way.
Canterbury High Country & Alpine Passes
Swap the dense ferns for golden tussock and wide-open valleys. The scale here is immense.
8. St James Cycle Trail
Located near the alpine village of Hanmer Springs, the St James was one of the first cycle trails to showcase New Zealand’s high country. This 64km loop takes you through vast tussock lands, over soaring mountain passes, and alongside crystal-clear rivers.
It's a challenging one or two-day ride that feels truly remote. You’ll be navigating through classic station country, complete with river crossings and climbs that top out with 360-degree views of the surrounding mountain ranges. The sense of isolation and raw beauty is what makes the St James so special.
Pro-Tip: The trail is best ridden clockwise, tackling the biggest climb up to Maling Pass early on. Be prepared for multiple river crossings that can be impassable after heavy rain.
9. Molesworth Road
This is less of a trail and more of a backcountry gravel epic. For a short period each summer, the road through Molesworth Station—New Zealand’s largest farm—is opened to the public. It’s a 207km gravel road journey from Blenheim to Hanmer Springs through a landscape so vast it feels like another continent.
This is an unsupported adventure for self-sufficient bikepackers. You'll need to carry all your food, water, and camping gear. The reward is experiencing a part of New Zealand that few get to see, with endless rolling hills and the profound silence of the high country.
Pro-Tip: A gravel bike or a hardtail mountain bike with fast-rolling tyres is the ideal weapon of choice. Plan your water stops carefully, as sources can be scarce.
10. Rainbow Road
Similar to the Molesworth, the Rainbow Road is a private road that opens to the public over summer, offering a 112km gravel adventure from St Arnaud to Hanmer Springs. It follows the path of powerlines through stunningly remote and rugged alpine terrain.
This is another serious undertaking for experienced backcountry riders. The road is rougher and the climbs are steeper than the Molesworth, but the scenery is arguably even more dramatic. You'll pass by historic farm huts and feel like a true pioneer exploring this untamed landscape.
Pro-Tip: Check the road status before you go, as it can be closed at short notice. The best direction is north to south, finishing in the comfort of Hanmer Springs with a well-earned soak in the thermal pools.
Queenstown, Wānaka & Central Otago
The adventure capital's backyard is a playground of gold mining history and epic alpine singletrack.
11. The Lake Dunstan Trail
One of the newest and most spectacular cycle trails in the country. Connecting Clyde and Cromwell, this trail clings to the side of the Cromwell Gorge, with incredible cantilevered platforms bolted directly to the rock face high above the turquoise Clutha River.
While only a Grade 2-3 trail, the engineering is mind-boggling and the scenery is world-class. It’s a fantastic day ride that showcases the unique semi-arid beauty of Central Otago. It’s an absolute must-do for any cyclist visiting the region.
Pro-Tip: Ride from Cromwell to Clyde. This gives you a slightly downhill gradient and you finish in the historic town of Clyde, which is a perfect spot for a post-ride meal and local pinot noir.
12. Macetown Track
This is a classic Queenstown adventure. The 15km ride from Arrowtown to the abandoned gold rush town of Macetown is a journey back in time. The 4WD track crisscrosses the Arrow River over 20 times, making for a fun and splashy ride.
The challenge isn't technical, but you need to be confident with river crossings, which can be swift and cold. Reaching the ghost town of Macetown, with its restored schoolhouse and scattered ruins, feels like discovering a hidden world. It's a fantastic half-day mission.
Pro-Tip: The river level is key. Don't attempt this after heavy rain. The best time to go is mid-summer when the water is lower and warmer.
13. Moonlight Track
A rugged and challenging singletrack connecting Arthurs Point to Moke Lake, this is a trail for fit, experienced riders. It’s a true backcountry mission right on Queenstown’s doorstep, with steep, technical climbs and narrow, exposed sections.
The views back towards the Shotover River and across to Ben Lomond are phenomenal. This is a tough ride, but the sense of accomplishment and the stunning alpine scenery make it a local favourite. It offers a taste of real wilderness without having to drive for hours.
Pro-Tip: The climb out of Arthurs Point is notoriously steep. Don't be ashamed to walk a few sections. The views from the saddle before you descend to Moke Lake are the ultimate reward.
14. Welcome Rock Trails
Located on a privately owned high-country station in Southland, Welcome Rock offers a unique and handcrafted trail experience. The main attraction is the 27km 'Roaring Lion' trail, which follows a historic water race built by Chinese gold miners.
This is mountain biking with a story. The trail is narrow and exhilarating, with incredible views over the Mataura Valley. You can book overnight stays in remote backcountry huts, complete with outdoor bathtubs, for a truly unforgettable experience. It’s a commercial operation, but one that’s been built with immense passion and care.
Pro-Tip: Book the 'Mud Hut' or 'Slate Hut' for an overnight stay. Soaking in the outdoor bath under a sky full of stars after a day of riding is pure bliss.
Fiordland & Southland
Welcome to the deep south, where the landscapes are raw, the weather is wild, and the adventures are legendary.
15. Borland Road to Percy Saddle
For the truly adventurous gravel grinder, this is one of New Zealand’s ultimate backcountry road rides. The Borland Road is a gravel track that cuts through the southern part of Fiordland National Park. The ride up to the 991m Borland Saddle is a challenge in itself, but the real prize lies beyond.
A rougher 4WD track continues up to the breathtaking Percy Saddle. Here, you’re surrounded by the towering granite peaks of Fiordland. It’s a raw, remote, and incredibly humbling place. This is an out-and-back ride that requires full self-sufficiency and a deep respect for the mountains.
Pro-Tip: This is a summer-only ride. The road is closed in winter, and the weather can be extremely volatile. Check with the Department of Conservation (DOC) for the latest conditions before you even think about heading out.
16. The Around the Mountains Cycle Trail
This 186km trail offers a journey through the dramatic and lesser-visited landscapes of Southland. While the full trail is a multi-day tour, specific sections offer incredible 'Fiord' country experiences. The section from Walter Peak Station to Mavora Lakes is a particular highlight.
You’ll ride through expansive tussock valleys flanked by the jagged Eyre Mountains. The trail is mostly gentle, allowing you to soak in the immense scale of your surroundings. A stay at the Mavora Lakes campsite, a famous Lord of the Rings location, is a must. As a writer for the Goh Ling Yong blog, I seek out these immersive experiences, and this one is top-tier.
Pro-Tip: You can start this section by taking the historic TSS Earnslaw steamship across Lake Wakatipu from Queenstown to Walter Peak, which is an amazing start to the adventure.
17. The Clutha Gold Trail
Following the mighty Clutha Mata-au River, this 73km trail is a journey through the rich gold mining history of Otago. It's a gentle (Grade 1-2) ride, making it accessible to almost everyone, but it doesn't skimp on the scenery.
You'll ride through a beautiful and fertile river valley, past historic mining relics, and through charming small towns like Roxburgh and Lawrence. It’s a perfect trail for a relaxed two-day ride, focusing on history, local food, and beautiful river views rather than technical challenges.
Pro-Tip: Combine it with the neighbouring Roxburgh Gorge Trail for a longer and even more spectacular journey. The jet boat transfer that connects the two sections of the Roxburgh Gorge trail is a highlight.
18. The Tuatapere Hump Ridge Track (Future Epic)
Keep your eyes on this one for 2025! Currently a famous 'Great Walk', the Hump Ridge Track is being upgraded and is set to become New Zealand's next premier ride for both walkers and bikers. Located at the very bottom of the South Island, it promises a wild and rugged coastal and sub-alpine experience.
The trail will take you along the coast, up over the sub-alpine zone of the Hump Ridge with 360-degree views of Fiordland and Stewart Island, and back down through stunning beech forest. Given the quality of recent trail developments like the Paparoa, expectations are sky-high for this to become an iconic 'Fern-Gully-and-Fiord' adventure.
Pro-Tip: Start following the official DOC and trail trust websites for updates on its opening date for mountain bikers. Being one of the first to ride this will be a true badge of honour.
The South Island is a treasure chest of world-class cycling adventures, a place where every trail tells a story and every climb reveals a new, more stunning vista. This list is just the beginning, a starting point to fuel your daydreams and kickstart your planning for 2025. The real magic happens when you get out there, feel the dirt under your tyres, and breathe in that pure, wild air.
So, what are you waiting for? Pick a trail, start training, and get ready for an unforgettable journey.
Which 'Fern-Gully-and-Fiord' trail is calling your name for 2025? Share your plans or your own favourite South Island rides in the comments below! We'd love to hear from you.
About the Author
Goh Ling Yong is a content creator and digital strategist sharing insights across various topics. Connect and follow for more content:
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