Three and a half hours across one of the roughest stretches of water in the southern hemisphere, with your motorcycle lashed to a car deck below you. It is the best value sightseeing on a New Zealand trip and it needs more thought than people give it.
The gap in the middle of the country
New Zealand is two islands and there is no bridge. Between them sits Cook Strait, twenty-two kilometres at the narrowest point, where the Tasman Sea and the Pacific meet and where the water funnels through a gap between two mountain ranges.
That geography does two things. It makes the crossing one of the more scenic short ferry journeys anywhere, because the run into Marlborough Sounds at the southern end takes you through drowned river valleys with bush coming down to the waterline on both sides. And it makes the strait itself genuinely rough, often enough that anybody prone to seasickness should take it seriously.
For a rider on a fifteen-day tour running Auckland to Christchurch, this crossing is the hinge. It is where the North Island ends, where the terrain changes character completely, and where a motorcycle spends three and a half hours in somebody else’s hands.
The two operators
Two companies run the route between Wellington and Picton. Interislander is the long-established one, operating the larger vessels. Bluebridge runs the alternative service. Both carry motorcycles, both take roughly three to three and a half hours depending on the ship and the conditions, and both run multiple sailings a day.
The differences that matter to a rider are the terminal locations in Wellington, which are not the same and are a few minutes apart, and the specifics of how each handles bikes on the deck. Neither is dramatically better. Booking the one with the sailing time that fits the day is more important than choosing between them.
Motorcycles are cheap on both, considerably cheaper than a car, which is one of the few places in New Zealand travel where being on two wheels saves real money.
Book it, and book it early
The single most important operational point in this article.
Cook Strait sailings sell out. Not occasionally, routinely, particularly in the summer months and around public holidays when the entire country appears to be moving between islands at once. A rider turning up at the Wellington terminal hoping to get on the next boat in January is going to have a long wait.
Vehicle space is the constraint rather than passenger space, and motorcycles compete for it with campervans, which occupy a great deal of deck. Booking weeks ahead is normal practice and booking months ahead is sensible in peak season.
Sailings also get cancelled. This is a rough stretch of water and when the wind gets up beyond a threshold, the ships do not go. That happens several times a year, occasionally for a day or more, and it has stranded a lot of travel plans.
Which is why any well-built itinerary keeps a buffer around this day rather than scheduling a tight connection on the far side.
What happens to your bike
The part riders worry about, and the answer is that it is handled competently and you should still pay attention.
You ride onto the vehicle deck and a crew member directs you to a spot, usually along a bulkhead or in a designated motorcycle area. You put it on the side stand, in gear, and the crew lash it down with straps, typically over the seat or across the bars depending on the vessel and the bike.
Then you leave it and go upstairs, because passengers are not permitted on the vehicle deck during the crossing. Whatever happens down there for the next three hours happens without you.
The practical implications: take everything you want off the bike before you leave it, including documents, valuables and anything you will want during the crossing. Empty the top box of anything that matters. And take a moment to check how it has been strapped, because a badly lashed bike on a rolling deck is the one scenario that produces damage.
Some riders bring their own soft ties, which is not unreasonable on a fully loaded touring machine. The crew do this all day and are generally good at it; on a rough crossing with a heavy bike, a second set of straps costs nothing.
The rough water question, honestly
Cook Strait has a reputation and it is earned. The strait funnels wind between the two islands, the tidal flow through the gap is strong, and the interaction between the two produces short steep seas that are unpleasant on a ship of any size.
A calm crossing is a beautiful three hours. A rough one is a long three hours during which a significant proportion of the passengers are unwell and the rest are trying not to look at them.
If you are prone to seasickness, treat this as a real risk rather than a joke. Take something before you board rather than after you feel it, because motion sickness medication does not work retroactively. Stay on deck in the air if you can, look at the horizon, and stay out of the enclosed lounges at the stern.
The Marlborough Sounds section at the southern end is sheltered and calm regardless, so even a bad crossing ends well.
What to actually do for three hours
Do not go to sleep in a seat. This is one of the more scenic journeys in the country and it is included in the price.
Leaving Wellington you get the harbour and the city receding, then the open strait, and if the weather is clear the mountains of the South Island appear ahead well before you reach them. Dolphins are common. Albatross and other seabirds follow the ship routinely, and on a good day the sight of a wandering albatross working the wind off the stern is worth the whole crossing.
Then, about forty minutes out from Picton, the ship turns into Queen Charlotte Sound and the character changes completely. Steep bush-covered slopes on both sides, coves, the occasional isolated house reachable only by boat, and the water flat. That final stretch is the bit everybody photographs and it deserves the deck rather than a window seat.
The ships have food, coffee and, on the larger vessels, decent facilities. Nobody is going hungry.
Getting off, and the first hour in the South Island
Disembarking is quick and slightly chaotic, and there is one specific thing to be careful about.
You come off a steel deck, possibly damp, onto a steel ramp, on a bike with cold tyres and cold brakes after three hours of sitting. The ramp has a gradient. There are vehicles moving around you and crew directing traffic. This is a low-speed, low-grip, high-distraction moment and it is where the occasional undignified drop happens.
Take it slowly, feet down, no throttle inputs on the ramp, and get onto the flat before you start thinking about where you are going.
Picton itself is a small port town at the head of the sound and it is a pleasant place to have a coffee and let the group reassemble. From there the road south runs through the Marlborough wine country, which is flat, fast and green, and then the terrain starts to build.
Biosecurity, which is taken seriously
New Zealand’s biosecurity regime is among the strictest in the world and it applies internally as well as at the border, particularly around agricultural pests moving between islands.
For a rider this rarely amounts to more than a question, but it is worth knowing that riding a bike caked in mud from a farm track onto a ferry is not appreciated, and that any food, plant material or soil being carried is subject to rules.
The bigger version of this applies on arrival in the country. If you bring your own riding boots, they will be inspected, and boots with soil in the tread have been confiscated or required to be cleaned at the airport. Clean your boots before you fly. This catches out adventure riders constantly.
Where it sits in the trip
On our fifteen-day route the crossing falls on day six, Palmerston North to Wellington and then the ferry, after the North Island half has done its work.
The placement is deliberate. By day six you have ridden the Coromandel, the volcanic plateau, the Forgotten World Highway and the country around Ohakune, you are used to the bike and used to riding on the left, and the ferry gives you an afternoon off the machine before the South Island starts.
It also functions as a genuine transition. People step off that boat feeling like the trip has begun again, which is a real and useful thing for a fortnight-long trip to have in the middle of it.
The alternative, which exists and is worse
You can fly between the islands and have a bike waiting on the other side, and some operators do exactly that.
It is faster on paper and it costs more, it means two bike handovers instead of one, and it removes one of the more memorable half-days of the trip. It also introduces a failure mode, because a bike that is supposed to be waiting for you in Christchurch and is not is a problem the ferry version cannot have.
The ferry keeps you and your machine together, which for a fortnight-long tour matters more than the three hours it costs.
Wellington, which deserves the evening before
The crossing usually means a night in Wellington, and it is worth treating as more than a hotel by a terminal.
New Zealand’s capital is a small, dense, hilly city wrapped around a harbour, and it has a reputation among New Zealanders for two things: wind and coffee. Both are earned. The wind funnels through Cook Strait and hits the city broadside, regularly at speeds that would close a road elsewhere. The coffee culture is serious and predates the global one.
Te Papa, the national museum on the waterfront, is free and is one of the better museums anywhere, with a section on the Gallipoli campaign built with the Weta workshop that is extraordinary and difficult. The Mount Victoria lookout gives you the whole harbour and the strait beyond it, and it is a short and enjoyable ride up.
The practical point for a rider is that the wind that makes Wellington famous is the same wind that cancels ferries, so an evening looking at the harbour whitecaps tells you something about tomorrow.
Riding in the wind, since this is where you meet it
The lower North Island and the Marlborough coast are among the windiest riding in the country, and visitors underestimate it.
A steady crosswind is manageable and you stop noticing it within a few minutes: you lean into it and the bike tracks straight. What catches people is the gust, and worse, the gap. Riding along an exposed coast behind a line of trees or a cutting, the wind is blocked, and then the shelter ends and you are hit sideways with no warning at all.
The habits that work: loose grip on the bars, because a rigid rider transmits everything straight into the steering. Weight low and relaxed. Eyes reading the landscape for cues, the bent grass, the streaked water, the truck ahead crabbing slightly. And a lower speed than the road would otherwise justify, because a gust at a hundred is a different event from a gust at eighty.
A tall screen and a heavily loaded top box both make it worse, which is one more quiet argument for a supported guided tour where the luggage travels in the van and you ride light.
What the South Island does differently
Worth setting up, because the contrast is the reason the crossing feels significant.
The North Island is green, populated, volcanic and rolling. The roads wind through farmland and bush, the towns are frequent, and you are rarely far from somewhere.
The South Island is bigger, emptier and considerably more dramatic. The Southern Alps run down the spine of it, the West Coast gets several metres of rain a year and grows rainforest, and forty kilometres east of the divide it is dry tussock country. The distances between towns stretch out. The passes are real passes.
Riders who have only seen photographs expect the South Island to be better. It is more spectacular, which is not the same thing, and a fair number of people come off a fortnight preferring the North Island roads. Doing both is the only way to have that argument properly.
Marlborough, and the first hour south
What you ride into off the boat deserves more than a mention, because it is a complete change of register from the North Island.
Picton sits at the head of Queen Charlotte Sound, and the immediate country south of it is the Wairau plain and the Marlborough wine region: flat, wide, gravelly soil, and something like thirty thousand hectares of vines. It is the largest wine region in New Zealand by a distance and it produces the sauvignon blanc that put the country on the international wine map in the 1980s.
For a rider it is easy, fast, open road with mountains on the horizon, and it functions as a decompression after three hours on a boat. It is also a good lunch stop on a route that is about to get considerably more demanding.
The alternative first hour is the Queen Charlotte Drive, which runs west from Picton along the sound toward Havelock. It is narrow, twisty, slow and spectacular, hugging the water with bush on both sides. It adds time and it is the better ride by a wide margin, which is exactly the sort of choice a well-built motorcycle tour makes and a schedule optimising for arrival does not.
From there the road runs south toward Kaikōura and the coast, or inland toward the Lewis Pass and the West Coast, depending on which way the route goes. On our fifteen-day big biking tour it is inland, over the Lewis, and into the wet country on the far side of the divide.
Practical checklist for the day
Book ahead, weeks not days. Arrive at the terminal with time; check-in for vehicles closes well before sailing and they do not wait.
Fuel up before you board rather than after, because the queue at the Picton station when a ferry has just unloaded is long.
Take a warm layer upstairs even in summer. The open deck in the middle of Cook Strait is windy and cold in a way that a sunny Wellington morning does not prepare you for.
Take your documents, your phone and anything valuable off the bike. Assume you cannot get back to it.
And if the forecast is bad, check the sailing status before you set off for the terminal rather than after you arrive.
If the sailing is cancelled
It happens, and knowing the drill removes most of the stress.
Cancellations are almost always wind rather than sea state, and they are announced with as much notice as the forecast allows, usually several hours. Both operators rebook affected passengers onto later sailings, and the backlog clears over the following day or two rather than instantly.
What that means for a rider on a fixed itinerary is a lost day, which is why an unhurried route keeps something in reserve around the crossing rather than scheduling a tight connection on the far side.
The consolation is that Wellington is a good place to be stuck. It has more to do on a wet day than most cities twice its size, and a spare afternoon at Te Papa or in the Cuba Street cafes is not a punishment.
What you should not do is try to outrun it by riding to a different port, because there is not one. This is the only vehicle crossing between the islands.
Riding New Zealand for real
Our fifteen-day New Zealand motorbike tour runs Auckland to Christchurch and takes in both islands properly, with the Cook Strait crossing on day six and the ferry, the bikes and the timing all handled rather than left to you. The North Island half covers the Coromandel, the volcanic plateau, the Forgotten World Highway and Taranaki; the South Island half runs the West Coast, the alpine passes, Queenstown, Milford Sound and the Mackenzie Country.
Small group, road captain, tour guide, mechanic and support vehicle carrying the luggage. Have a look at the 15-day New Zealand Forgotten World tour and the tour dates page for the current season. If you want to know which departure gives you the best odds of a flat crossing and clear weather over the passes, message us on WhatsApp and we will tell you what the season actually does.
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