Hokkaido is Japan's northern island and the one place in the country where you can ride for a full day without meeting a traffic light. The riding season is short. The high roads open once the snow clearance crews finish in spring and shut again in late autumn, and the island's best-known mountain road, the Shiretoko Pass on National Route 334, is a good marker for the whole calendar: it closed on 4 November 2025 and reopened at 09:30 on 28 April 2026. Plan on roughly late April to early November for the passes and late May to early October for comfortable touring weather. This guide covers the main routes, the deer problem, the season window and what renting a bike in Japan actually requires (verified August 2026).
Why Hokkaido rides differently to the rest of Japan
Most of Japan is tight valleys, short sightlines and villages every few kilometres. Hokkaido is not. It was settled late and thinly, its road network laid out in the modern era rather than inherited from footpaths, and the result is long straights, gentle curves and horizons. Riders from Honshu describe the change in one sentence: the roads stop being technical and start being open.
That has a practical consequence. On Honshu you plan around traffic; in Hokkaido you plan around distance and fuel. Between Daisetsu Lake and the settlement of Mitsumata in Kamishihoro, along National Route 273 over the Mikuni Pass, there is not a single house.
Hokkaido at a glance
| Practical season | Late April to early November for the passes; late May to early October for comfortable weather |
| Shiretoko Pass window | Closed 4 November 2025, reopened 09:30 on 28 April 2026; night closures precede the full winter shutdown (as of August 2026) |
| Highest national-highway pass | Mikuni Pass, 1,139 m (3,737 ft), National Route 273, Daisetsuzan National Park |
| Northernmost point | Cape Soya, Wakkanai, 45°N, about 43 km (27 miles) from Sakhalin |
| Deer collisions | 6,705 reported in Hokkaido in 2025, a ninth consecutive record year |
| Riskiest deer window | About 41 percent of the year's collisions fall in October and November; over 70 percent happen between 16:00 and 24:00 |
| Licence for visitors | Japan accepts only 1949 Geneva Convention international driving permits, valid one year from entry |
Open the Sapporo to Kushiro route via Mikuni Pass in Google Maps — it strings together Sapporo, Asahikawa, Kamikawa, Kamishihoro and Kushiro, so you can send the whole central crossing to your navigation before you leave the last town with reliable coverage.
The Shiretoko Pass, and why its dates matter
National Route 334 crosses the Shiretoko Peninsula between Utoro on the Sea of Okhotsk and Rausu on the Nemuro Strait. The crossing section — 23.8 km (14.8 miles) from Yunosawa in Rausu to the prefectural road junction at Iwaobetsu in Shari — is the only road over the peninsula, and it is closed every winter from around early November until the end of April. It is often described as the national highway with the shortest open period in Japan, and the reopening date moves by days or weeks depending on how much snow the clearance crews have to move.
The pattern before the full closure catches people out. Night restrictions start first, while the days are still mild, and only then does the full-day closure begin. In the 2025 to 2026 cycle the road was under restriction from 27 October, went to full winter closure on 4 November, and did not reopen until the morning of 28 April.
The two sides ride completely differently. From Utoro the road is wide with medium to fast curves; from Rausu it is a sequence of hairpins that gains the height quickly. At the top a car park and viewpoint look straight at Mount Rausu with Kunashir Island across the strait. Clear weather is the catch — this is one of the foggiest corners of Japan and plenty of riders reach the top and see nothing.
Mikuni Pass and the central crossing
National Route 273 over the Mikuni Pass is the highest point on any national highway in Hokkaido, at 1,139 m (3,737 ft), and it sits inside Daisetsuzan National Park. Unlike Shiretoko it is open year-round — the summit section was still unpaved and closed in winter until improvement work finished in 1994, and it has been passable all year since. That does not make it a winter road for a motorcycle, but it does mean the shoulder seasons are usable.
There is a specific restriction to be aware of. The 12 km on the Kamikawa side is designated a special traffic-restriction section and closes when cumulative rainfall passes 100 mm. In a wet week that is not a theoretical number. The Mikuni rest house at the top is the obvious stop, and the view from the observation deck over an unbroken sea of fir and spruce is the reason most people ride the road. Late September into early October is when that forest turns.
North of the pass, National Route 273 links to the Sounkyo gorge and the Daisetsu Dam; south, it runs past Horoka onsen and the Nukabira reservoir toward Obihiro. Brown bear, Ezo deer and red fox all live in the forest either side of the tarmac. Fill up before you commit to it.
The coastal runs, and the far north
Two coastal roads carry most of the long-distance touring traffic. The western one runs up the Sea of Japan coast from Rumoi toward Wakkanai on National Route 232, a road so straight and so exposed that riders talk about it in terms of crosswind rather than corners. The eastern one, National Route 238, follows the Sea of Okhotsk around the top of the island through Monbetsu and Esashi.
They meet at Cape Soya, the northernmost point of the Japanese mainland and, for most visitors, the whole point of riding this far. It sits at 45°N — the same latitude as Milan, Lyon and Montreal — with the southern tip of Sakhalin about 43 km (27 miles) across the water and visible on a clear day. The weather record from the Soya observation point explains what to pack better than any packing list: since 1978 there have been just five days above 30 °C, the average daily temperature range is only 5.4 °C, and wind of 10 m/s or more is recorded on an average of 232.6 days a year.
Inland, the other classic Hokkaido landscape is the farmland around Biei and Furano — rolling hills, single trees on skylines, and a lattice of narrow farm roads that reward wandering more than route planning. It is also the one part of the island with real summer congestion, so ride it early.
Deer are the real hazard, not the corners
Ezo deer collisions in Hokkaido have risen every year for nearly a decade. Hokkaido Police recorded 6,705 deer-related traffic accidents in 2025, up 1,245 on the previous year and a ninth consecutive record. The distribution is what matters for planning: roughly 41 percent of the annual total falls in October and November, during the rut, and more than 70 percent of collisions happen between 16:00 and 24:00.
Finishing the day early in autumn is therefore arithmetic rather than caution. Deer rarely travel alone, so one crossing in front of you usually means another is about to. They come from the verge rather than the open field, and Hokkaido's verges are often two metres of grass against a wall of forest.
Renting a bike and the licence problem
This trips up more foreign riders than any road condition. Japan recognises only international driving permits issued under the 1949 Geneva Convention, and a recognised permit lets you ride for a maximum of one year from the date you enter the country. Permits issued under the 1968 Vienna Convention are not valid in Japan, no matter how official they look, and a great many countries issue only the Vienna version.
There is a separate arrangement for six places that do not issue 1949 permits — Belgium, France, Germany, Monaco, Switzerland and Taiwan. Licence holders from those countries can ride in Japan for up to a year using an official Japanese translation of their home licence, obtained from the Japan Automobile Federation or in some cases from their consulate in Japan. Riders from countries in neither group cannot ride on a foreign licence at all and would need to obtain a Japanese licence. Check the current position with JAF before you book anything, because the list is a legal arrangement rather than a courtesy and it does change.
On the practical side, minimum riding age is 18, rental operators want the permit and your home licence together, and Japanese licence classes are engine-capacity based, so the class endorsed on your home licence determines what you can be given. Note also that hire vehicles picked up in Hokkaido are generally not allowed to be dropped off outside Hokkaido, and the reverse, so a one-way trip involving the Honshu ferry needs to be arranged as such from the start.
Gear notes for long gaps and cold mornings
Two things about Hokkaido punish a setup built for dense countries. The first is mobile coverage. Large parts of Daisetsuzan, the Shiretoko peninsula and the northern coast have patchy or no data, so navigation that depends on a live connection stops being navigation exactly where the alternatives are hardest to find. Downloading the route before you leave Asahikawa or Kushiro, and running it on a display that copes with rain and cold, is the difference between navigating and guessing — our guide to choosing a motorcycle GPS setup explains what offline capability really means, and a JADO S6 riding system keeps route, cameras and music on one screen so the phone stays in your jacket.
The second is temperature swing. A June morning at Cape Soya can start near single digits and a July afternoon at Biei can hit the high twenties, and the passes add their own drop on top. Cold air lowers tire pressure, and there is nobody with a gauge at the top of Mikuni — why tire pressure falls in cold weather covers the physics, and a TPMS sensor tells you about a slow leak while there is still a town in range. Charging is the third gap, since the roadhouses and rest areas along Route 273 and Route 238 are not reliable places to find a socket, and a bi-directional fast charger that pulls power from the bike and pushes it into a phone or camera earns its space in the tank bag.
FAQ
When is the Hokkaido motorcycle season?
Practically, late April to early November for the mountain roads and late May to early October for weather you will enjoy. The Shiretoko Pass reopened on 28 April in 2026 and closed on 4 November the previous autumn, which is a fair guide to the outer limits. Snow is possible at altitude outside those months.
Do I need an international driving permit to ride in Hokkaido?
Yes, and it must be a 1949 Geneva Convention permit, valid for one year from your date of entry. Vienna Convention permits are not accepted. Holders of Belgian, French, German, Monegasque, Swiss and Taiwanese licences use an official Japanese translation instead.
How dangerous are deer in Hokkaido?
Common enough to plan around. There were 6,705 recorded deer collisions in 2025, with about 41 percent of them in October and November and more than 70 percent between 16:00 and midnight. The practical response is to avoid riding at dusk in autumn and to expect a second animal after you see the first.
Which is the best road in Hokkaido?
The two that come up most are the Shiretoko Pass on National Route 334 for the drama and the Mikuni Pass on National Route 273 for the forest. They are at opposite ends of the island, so most itineraries link them through the lakes and farmland of the centre rather than choosing between them.
Can I take a rental bike from Hokkaido to Honshu?
Usually not on a one-way basis. Japanese rental operators generally do not allow vehicles hired inside Hokkaido to be returned elsewhere. Arrange it explicitly before booking rather than assuming the ferry solves it.
