Last updated July 2026
Embark on an adventure along the Dun Mountain Trail, also known as the Coppermine Trail, in Nelson, New Zealand. This iconic route follows the alignment of New Zealand’s first railway and offers rewarding experiences for both cyclists and walkers through diverse landscapes and historic sites. The full circuit spans approximately 39 to 43 km with a maximum elevation of 878 m at Coppermine Saddle. Cyclists enjoy flowing singletrack descents while walkers appreciate the steady pace and panoramic views. The trail provides a direct link from central Nelson into the surrounding hill country.
Practical Information
| Location | Nelson, New Zealand |
| Trail Length | 38.7–43 km full circuit |
| Max Elevation | 878 m at Coppermine Saddle |
| Difficulty | Moderate to hard |
| Activities | Cycling, walking, trail running |
| Access Points | Maitai Dam car park (11 km from Nelson CBD), Brook Street trailhead |
| Best For | Fit cyclists and walkers seeking history and views |
About the Coppermine Trail
The Coppermine Trail, commonly referred to as the Dun Mountain Trail, follows the route of the historic Dun Mountain Railway. This narrow-gauge line operated from 1862 to 1901 to transport chromite from mines on the eastern slopes of Wooded Peak. The trail preserves remnants such as spoil piles, railway sleepers, and historical markers including a lime kiln from 1863.
Starting near central Nelson, the route climbs steadily through Codger’s Mountain Bike Park and along the old railway alignment. It passes through beech forest before reaching the exposed mineral belt with its distinctive ultramafic rocks and stunted vegetation. At Coppermine Saddle the trail offers 360-degree views across the Maitai Valley and Tasman Bay.
The descent features approximately 10 km of singletrack back toward Maitai Dam, followed by a riverside section along the Maitai River. The trail is maintained as part of the New Zealand Cycle Trail network and suits experienced users who prepare for variable weather and remote sections.
Cycling the Coppermine Trail
Cycling the full loop typically takes 4 to 6 hours for fit riders with intermediate technical skills. The route begins with a consistent climb on gravel and old railway formation before transitioning to singletrack near the saddle. The 9.6 km descent from Coppermine Saddle to Maitai Dam provides flowing sections through rock gardens and forest.
Riders should carry repair kits, spare tubes, food, water, and wet-weather gear. Mobile coverage is limited in upper sections. The trail forms part of the official Coppermine Trail Great Ride and connects with Codger’s Mountain Bike Park for additional options.
Walking the Coppermine Trail
Walking allows a more immersive experience and can be completed as a full-day outing or in sections. The steady gradient of the historic railway formation makes the ascent manageable for those with good fitness. Highlights include storyboards detailing the mining history and viewpoints at Windy Point and Coppermine Saddle.
Walkers share the trail with cyclists on the descent, so awareness of other users is important. Many choose to start from the Maitai Dam car park or Brook Valley for shorter out-and-back options or combine sections with nearby tracks such as Black Diamond Ridge.
History and Heritage
Copper deposits were discovered in the Maitai River area in the 1850s, leading to the formation of the Dun Mountain Copper Mining Company. Although copper mining proved uneconomical, chromite extraction became the focus. Approximately 200 workers constructed the railway in under a year, creating New Zealand’s first railway line.
The line closed in 1901. Today, interpretive signs and physical remnants along the trail provide insight into this early industrial activity. The route also connects with the Te Araroa Trail at Coppermine Saddle.
Terrain, Ecosystems and Views
The trail traverses several distinct ecosystems. Lower sections pass through beech forest and pine plantations. Higher elevations feature the mineral belt scrubland with hardy native plants adapted to ultramafic soils. The descent includes kānuka, southern rātā and beech forest.
Scenic highlights include views of the Waimea Plains, Tasman Bay, and the dramatic reddish-brown rocks of the mineral belt. Bullock Spur offers a lookout and picnic area. The final riverside section provides a gentle conclusion along the Maitai River.
Access, Parking and Logistics
The primary access is via Maitai Valley Road, 11 km from central Nelson. The Maitai Dam car park provides the main starting point with additional parking available nearby when gates are open. The Maitai Valley Motorcamp offers another option.
Well-signposted routes guide users through the various sections. Check current conditions and any gate closures before departing. The trail is free to use with no booking required.
Safety and Preparation
Users require moderate to good fitness due to the 878 m elevation gain. Sudden weather changes are possible at higher elevations. Carry a personal locator beacon, first aid kit, sufficient food and water, and layers for changing conditions.
Intermediate mountain biking skills are recommended for the technical descent. Inform someone of your plans and check weather forecasts. The remote nature of upper sections means self-sufficiency is essential.
What Visitors Often Say
Many cyclists describe the descent from Coppermine Saddle as a highlight, praising the flow and variety of terrain while noting the need for good bike handling skills.
Walkers frequently mention the rewarding views at the saddle and the interesting historical markers, appreciating the steady climb and peaceful riverside return.
Where to Learn More
Nelson Trails: Detailed maps, distances, and descriptions for the Coppermine Trail and connected routes.
NZ Cycle Trail: Official information on the Coppermine Trail as a Great Ride, including route details and partner services.
Nelson City Council: Local parks and reserves information relevant to trail access and management.
Frequently Asked Questions
What is the best time of year to ride or walk the Coppermine Trail?
Spring and autumn generally offer milder temperatures and fewer weather extremes, though the trail can be enjoyed year-round with appropriate preparation.
Are guided tours available?
Local operators offer guided mountain bike tours that include the Coppermine Trail and provide historical context.
Is camping permitted along the trail?
No formal camping facilities exist on the trail itself. Overnight accommodation is available in Nelson or at the Maitai Valley Motorcamp near the trailhead.
What wildlife might be seen?
Native birds such as bellbirds and tūī are common, along with occasional sightings of weka and lizards in the mineral belt area.
Are toilets available?
A toilet is located at Coppermine Saddle. Facilities are also available at the Maitai Dam car park and other trailheads.
Do I need a permit or booking?
No permit or booking is required. The trail is open to the public with standard shared-use etiquette expected.
What is the elevation gain for the full loop?
The route involves approximately 1,100–1,200 m of total elevation gain depending on the exact start point chosen.
Is the trail suitable for beginners?
The full circuit is best suited to fit, experienced users. Shorter sections or the Codger’s Mountain Bike Park offer more accessible options for those building skills.
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