Kansai Self-Drive Routes: Wakayama, Shirahama and Awaji Island — Why You Should Not Combine Them

Kansai Self-Drive Routes: Wakayama, Shirahama and Awaji Island — Why You Should Not Combine Them

The two drives worth renting a car for in Kansai run in opposite directions: south to Wakayama and Nanki-Shirahama, or north-west across the water to Awaji Island. Every season GoodCars sees the same itinerary — both routes, same day. This guide does not repeat the "should I even rent in Kansai" question (our complete Kansai car rental guide covers that). Instead it breaks both routes down to the level that actually decides whether your day works: leg-by-leg driving, parking capacity at each stop, and the hard cut-off times. Distance is rarely the problem in Kansai. Capacity and timing are.

The part of Kansai worth driving starts the moment you leave the cities (illustrative image)

First conclusion: these are opposite directions, not one trip

Get the geography straight and every scheduling rule below follows from it. Kansai Airport sits on the southern rim of Osaka Bay. Wakayama is directly south of it. Awaji Island is north-west, on the far side of the bay. There is no shortcut between them — by road you must loop back through Osaka and Kobe, which means spending a driving day returning to where you started.

The GoodCars rule of thumb: on a Kansai trip of three days or less, pick one. If you genuinely want both, put Awaji on your arrival or departure day — it is close to Kobe and fits the airport corridor — and keep the Wakayama run as its own overnight.

The Shirahama run: tolled first, free later, and the variable is night closures

The final stretch south runs through continuous tunnels — also where overnight maintenance closures happen (illustrative image)

This route has a structure most visitors do not expect: the tolled section comes first and the free section comes last. Heading south from Kansai Airport you take the Hanwa Expressway (tolled) as far as Nanki-Tanabe IC. Past that point you are on the Kisei Expressway, which is a toll-free section, currently open through to Susami-minami IC — and Nanki-Shirahama IC sits inside that free stretch.

It is also why GoodCars does not recommend Shirahama as a day trip: you would have to dodge night-works restrictions in both directions, leaving only the middle of the day to actually see anything. Leg distances and overall drive times are tabulated in our complete Kansai car rental guide.

Shirahama's real constraint: 30 spaces at Sandanbeki, none at Shirarahama

Nanki's signature coastline photographs beautifully — and every viewpoint has a tiny car park (illustrative image)

Shirahama's sights sit close together, mostly within ten minutes of each other. The scheduling difficulty is therefore not distance. It is parking. Here is what GoodCars wants you to know before you arrive:

Thirty spaces at Sandanbeki is the single most useful number on this page. It means the site has no elasticity: once the lot is full you are waiting at the entrance. GoodCars suggests making Sandanbeki either your first stop of the morning or your last of the evening, well away from the 11:00–14:00 coach window.

Shirarahama has no car park of its own, and in summer there is very little free parking nearby (illustrative image)

The one place that closes: 17:00, and most Wednesdays

The only stop on this route with both a parking fee and a closing time (illustrative image)

When GoodCars plans a route, we look for two answers first: which stop is the only one that closes, and which is the only one you pay to park at. In Shirahama they are the same place — Adventure World.

• Open 10:00–17:00, with seasonal variation and occasional special evening operation. It is the only hard cut-off on the route.
• Closed days cluster on Wednesdays. Visitors who schedule Shirahama midweek to dodge crowds often land exactly on a closure.
• Parking runs around 1,200 yen per day across roughly five thousand spaces, on a gateless plate-recognition system that allows same-day re-entry.
• The car park opens before the park does — commonly from around 07:00 against a 10:00 opening — so arriving early to secure a space works.

Put those four facts together and the two-day Shirahama skeleton writes itself: afternoon one, drive down and do the coastal viewpoints (small car parks, but no closing time); morning two, Adventure World (closing time, paid parking); afternoon two, drive back north. Reverse the order and you spend the whole trip racing a clock.

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Awaji Island: how the bridge tolls work, and the second bridge nobody budgets for

The Akashi Kaikyo Bridge gets you onto the island — but it is not the only toll bridge on this route (illustrative image)

The first bridge is the Akashi Kaikyo Bridge (Tarumi IC ⇄ Awaji IC). Its pricing logic is covered in our complete Kansai car rental guide — the gap between the ETC and cash rates is more than double, which is why GoodCars always recommends adding an ETC card. What that guide does not cover is the part people miss: there is a second bridge.

Awaji's signature sight is the Naruto whirlpools, and the walkway that lets you look straight down at them is on the Tokushima side. To reach it you cross the Onaruto Bridge from the southern tip of Awaji (Awaji-shima-minami IC ⇄ Naruto-kita IC) — and pay again on the way back.

GoodCars advice: if you simply want to see the whirlpools, staying on Awaji is enough — the roadside station at the island's southern tip is itself a viewing point, with no second bridge required. Only cross if you specifically want the glass-floor view from directly above. Note too that the roadside station generally runs 09:00–17:00 and closes on Thursdays (it may open in peak season), and shifts to an overflow lot with a shuttle when busy.

Awaji's timing lock: the whirlpools run on the tide, not on your itinerary

Whirlpool timing is set by the tide and moves every day — the schedule has to bend around it (illustrative image)

This is what makes the Awaji route different from every other drive in Kansai: it contains a timing lock you cannot negotiate with. The whirlpools are not an "any time during opening hours" sight. They are tidal. They are strongest around spring tides — the days either side of a new or full moon — and the peak moment shifts a little every day. Spring and autumn spring tides run fastest and are widely considered the best windows.

Both of the route's main paid attractions also have an admission cut-off well before closing — the single most common trap for overseas visitors:

Parking at the national park is in the 500 yen band for a standard car, across roughly five hundred spaces. Read that alongside the admission cut-offs and the conclusion is blunt: on the Awaji route, your last stop effectively closes an hour early. GoodCars has seen far too many drivers arrive at the gate just after entry stopped.

Putting it together: departure and return times

Combining every timing lock and capacity limit above, here are the two skeletons GoodCars uses. Both assume pick-up and drop-off at Kansai Airport.

Pick-up points and the documents you must carry

GoodCars operates six pick-up points in Japan. Both routes on this page start from the Kansai Airport one:

For most nationalities, driving in Japan requires an International Driving Permit issued under the 1949 Geneva Convention, carried together with your home licence and passport. GoodCars cannot stress this enough: Japan recognises only the 1949 Geneva format. A permit issued in the Vienna Convention format is not valid here, which catches out a steady stream of European visitors every year. A small group of countries and territories instead drive on their home licence plus an official Japanese translation rather than an IDP — Switzerland, Germany, France, Belgium, Monaco and Taiwan among them — and that translation must come from an authorised body such as the Japan Automobile Federation; a translation you produce yourself is not accepted. Driving entitlement runs for one year from your date of entry, or until your licence expires, whichever is shorter. Note that licences issued in mainland China cannot be used to drive in Japan at all, with or without a permit. Full documentation, insurance and left-hand-traffic guidance is in the GoodCars complete guide to renting a car in Japan.

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Frequently asked questions

Q1. Can I really not do Wakayama and Awaji on the same day?

You can physically drive it; you should not plan it. They sit due south and north-west of Kansai Airport with Osaka Bay in between, so the road route loops back through Osaka and Kobe and most of the day disappears onto expressways. On a trip of three days or less, GoodCars says pick one.

Q2. How should I budget tolls for the Shirahama run?

The key is the structure: tolled first, free later. Kansai Airport to Nanki-Tanabe IC is the tolled Hanwa Expressway; after that the Kisei Expressway is a free section, and Nanki-Shirahama IC lies inside it. Exact amounts vary by vehicle class and time, so check the operator's official toll search.

Q3. If the Kisei Expressway is free, is it always open?

No. That section closes overnight at times for tunnel equipment inspection, with traffic diverted to National Route 42. GoodCars recommends doing the long transit in daylight and checking the night-works notice before departure.

Q4. Do I have to pay to park at the Shirahama sights?

The coastal viewpoints are mostly free but very small — about thirty spaces at Sandanbeki, about seventy at Senjojiki. The genuinely paid ones are Adventure World (around 1,200 yen per day) and the lots around Shirarahama beach in high summer (commonly around 2,000 yen per entry). The beach itself has no car park, and street parking there is prohibited.

Q5. Which day should Adventure World go on?

Check the closure calendar first — closed days cluster on Wednesdays — and remember the 10:00–17:00 operating window. GoodCars suggests the morning of your second Shirahama day; the car park opens well before the gates, so you can park first and wait.

Q6. Do I need to cross the Onaruto Bridge to see the whirlpools?

No. There is a viewing point at the southern tip of Awaji, so you can see them without leaving the island. The crossing into Tokushima is only worth it if you want the view from the walkway directly above the water, and you pay the toll in both directions.

Q7. How do I find out when the whirlpools will be running?

They follow the tide, so the best moment differs every day. Spring tides around the new and full moon are strongest, and spring and autumn are the best seasons. Check the day's tide table and the operators' published best-viewing windows, then work backwards — GoodCars's method is to fix the arrival time first and the departure time second.