ドライブガイド · 2026年更新

アイスランドのF道路

アイスランドの山岳道路完全ガイド——必要な車両、川越えの方法、道路開通時期、主要ルート全て。

🗺 全Fロード 🚙 運転できる？🌊 川渡り 📅 開通日 📍 目的地 ❓ よくある質問

4WD

全Fロードで必須

Jun – Sep

シーズン

F35

最も簡単なルート

F88

最も挑戦的

road.is

リアルタイム状況

Fロードとは？

Fロード（fjallvegir、山道の意）はアイスランドの内陸高地を走る未舗装の山岳路です。夏季のみ開放され、通常6月下旬から9月まで、雪解けと気象条件によって異なります。

Fで始まる道路はすべて、法律により四輪駆動車が必要です。通常の2WD車でFロードを走行することは違法であり、レンタカー保険が無効になります——すべての損害について個人的に責任を負うことになり、損害額は100万ISK（7,000ユーロ以上）を超えることがあります。

Fロードには橋のない深い川渡り、急な下り坂、緩い砂利、穴ぼこ、突然の天気変化が含まれることがあります。その見返りは？アイスランドの最も素晴らしい景観へのアクセス——流紋岩の山々、火山カルデラ、地球上他のどこにも存在しない地熱地帯。

Fロードを走行する前に

⚠出発当日にroad.isで道路状況を確認——一夜で閉鎖されることがあります
⚠safetravel.isでルートを登録し、救助隊に計画を知らせましょう
⚠vedur.isで天気予報を確認——オレンジまたは赤の警報時は進入しないこと
⚠車両が4WDであることを確認——レンタル契約がFロードをカバーしているか確認
⚠十分な燃料を持参——高地にはガソリンスタンドがありません

主要Fロード一覧

ルートをクリックして詳細を確認。

道路	目的地	難易度	川渡り	開通時期	距離
F35	Kjölur Route	Easy	No major crossings	Early June	~170 km
F208 (North)	Landmannalaugar — North approach	Moderate	Minor crossings	Mid-June	~50 km
F208 (South)	Landmannalaugar — South approach	Difficult	Yes — multiple, can be deep	Late June – July	~40 km from Hella
F88	Askja Route	Difficult	Yes — Lindaá and others	Late June – July	~100 km from Mývatn
F26	Sprengisandur	Challenging	Yes	July	~200 km
F225	Landmannaleið	Moderate	Yes — Tungnaá	Late June	~80 km
F249	Þórsmörk Route	Difficult	Yes — multiple glacial rivers	Late June	~25 km from Ring Road

F35

Kjölur Route

Easy

The most accessible highland route, running between Gullfoss and Blönduós past Hveravellir geothermal area. No major river fords. Best for first-time highland drivers.

川渡り： No major crossings

通常開通： Early June

距離： ~170 km

地域： Central Highlands

Hveravellir hot springBlöndulón reservoirKerlingarfjöll turn-off

高地ガイド →

F208 (North)

Landmannalaugar — North approach

Moderate

Northern access to Landmannalaugar from the Sprengisandur direction. Fewer river crossings than the southern approach.

川渡り： Minor crossings

通常開通： Mid-June

距離： ~50 km

地域： South Highlands

LandmannalaugarRhyolite mountainsNatural hot spring

高地ガイド →

F208 (South)

Landmannalaugar — South approach

Difficult

Most popular access route to Landmannalaugar from the south. Includes the Krossá river and several other fords that can be challenging after rain.

川渡り： Yes — multiple, can be deep

通常開通： Late June – July

距離： ~40 km from Hella

地域： South Highlands

LandmannalaugarLaugavegur trailheadFjallabak Nature Reserve

高地ガイド →

F88

Askja Route

Difficult

Remote volcanic route to Askja caldera from Mývatn. Includes the famous Lindaá river crossing which can be waist-deep in meltwater season. One of Iceland's most demanding drives.

川渡り： Yes — Lindaá and others

通常開通： Late June – July

距離： ~100 km from Mývatn

地域： Northeast Highlands

Askja calderaVíti crater lake (warm bathing)Drekagil gorge

高地ガイド →

F26

Sprengisandur

Challenging

Iceland's great north-south highland crossing over a bleak lava desert between the Vatnajökull and Hofsjökull glaciers. No services at all. Fuel and supplies must be carried.

川渡り： Yes

通常開通： July

距離： ~200 km

地域： Central Interior

Þórisfell table mountainNyidalur campsiteRemote lava deserts

高地ガイド →

F225

Landmannaleið

Moderate

Alternative access to Landmannalaugar from the west, crossing the Tungnaá glacier river. More scenic than F208 south but equally challenging.

川渡り： Yes — Tungnaá

通常開通： Late June

距離： ~80 km

地域： South Highlands

LandmannalaugarTungnaá river crossingHekla volcano views

高地ガイド →

F249

Þórsmörk Route

Difficult

Short but demanding route to Þórsmörk valley. The last 10 km involve multiple glacial river crossings that can be extremely hazardous. Highland buses are recommended.

川渡り： Yes — multiple glacial rivers

通常開通： Late June

距離： ~25 km from Ring Road

地域： South Highlands

Þórsmörk valleyLaugavegur trail endFimmvörðuháls pass

高地ガイド →

この道を運転できますか？

Fロードについて最もよく聞かれる質問です。車種別に分かりやすくまとめました。

🚗

Toyota Yaris / small car

2WD city car✗ 不可

Not permitted on any F-road. Insurance void. Rental companies will charge full cost of any damage.

🚙

Toyota RAV4 / Dacia Duster

Small 4×4 SUV⚠ 条件次第

Fine for F35 Kjölur and F208 north. Can struggle on deeper river crossings (F88, F249). Check ground clearance and rental agreement.

🛻

Toyota Land Cruiser / Ford Ranger

Large 4×4 / high clearance✓ 可能

Suitable for all F-roads including F88 and F249. Ideal for river crossings. Most common rental for highland travel.

🚙

Suzuki Jimny

Small 4×4⚠ 条件次第

High clearance and capable off-road. Good for most F-roads but small — not for very deep rivers. Very popular rental.

🚐

Standard campervan

2WD campervan✗ 不可

Not permitted on F-roads. Standard campervans are 2WD and have no ground clearance. Must stay on paved roads.

🚐

4×4 campervan

4WD campervan⚠ 条件次第

Permitted on most F-roads but check your rental agreement — many prohibit river crossings. Long wheelbase limits access to F249 and F88.

重要：4WDであっても、川渡りはレンタカー保険から通常除外されています。最安の保護レベルを購入する前に必ず契約を確認してください。

川渡りガイド

川渡りはFロード走行で最も危険な部分です。水深と流れは数時間で変化し、氷河の融雪は午後にピークを迎えます。

River crossing Iceland highlands - 4x4 vehicle fording glacial river

Highland F-road Iceland - vehicle on rough terrain

止まって先に歩いて渡る

Never drive in without checking on foot. Wade across to feel depth, current and the bottom surface. If it's above your knee, it may be too deep for your vehicle.

最も広い地点で渡る

Water spreads out at the widest section, making it shallower and the current weaker. Avoid narrow channels where water runs fast and deep.

適切な時間帯を待つ

Glacial rivers rise in the afternoon as melt increases with daytime heat. Cross in the morning when levels are at their lowest.

低速ギアを使い、一定速度を維持する

Select 4WD low range. Enter at an angle upstream. Keep a constant speed — never accelerate suddenly or you may stall with water in the engine.

エンストした場合：すぐに再始動しない

If the engine stalls in water, do not try to restart — you risk hydrolocking the engine. Wait for rescue. Stay in the vehicle if there is a current risk.

迷ったら：引き返す

There is no route in Iceland that is worth risking your life for. Recovery costs 200,000–500,000 ISK minimum. Turn around and try again later or choose an alternative route.

保険に関する警告

アイスランドのほぼすべてのレンタカー契約では、川渡りがすべての保険レベルから明示的に除外されています。車両が損傷したり流されたりした場合、全責任を負います。救助だけで20万〜50万ISK；車両損傷は100万ISK以上になることがあります。

Fロード開通日

通常の開通日——冬の降雪量により年によって2〜4週間前後します。出発前に必ずroad.isで確認してください。

出典：Vegagerðin（アイスランド道路局）— road.is

道路	通常開通時期	備考
F35 Kjölur	Early June	Most reliable opening. Often first highland road to open.
F208 (North)	Mid-June	Depends on snow melt. Check road.is before departure.
F208 (South)	Late June – July	River levels highest in June. July safer for crossings.
F225	Late June	Tungnaá river level depends on glacier melt.
F88 Askja	Late June – July	One of the last to open. Verify on road.is.
F249 Þórsmörk	Late June	Rivers can be dangerous even after opening — buses recommended.
F26 Sprengisandur	July	Last major road to open. Can close again in bad weather.

リアルタイム道路状況を確認 → road.is

Fロードはどこへ続く？

Fロードはそれ自体が目的ではありません——アイスランドの最も素晴らしい場所のいくつかに到達できる唯一の手段です。

Landmannalaugar

F208 / F225

Colourful rhyolite mountains and natural hot spring. Start of the Laugavegur trail.

Þórsmörk

F249

Glacier valley ringed by rivers. End point of the Laugavegur trail.

Askja

F88

Remote volcanic caldera with a warm crater lake for bathing.

Kerlingarfjöll

F35 (Kjölur)

Dramatic mountain range with geothermal fields. Accessible via the easiest highland route.

Hveravellir

F35

Geothermal hot spring in the centre of the highlands. Natural bathing pool.

Sprengisandur

F26

Iceland's great lava desert — a 200 km crossing between two glaciers. No services.

完全な高地ガイド →

よくある質問

Fロードについて旅行者が聞くすべての質問——正直に回答。

Are F-roads dangerous?+

They can be. F-roads are unsurfaced mountain roads with no guardrails, steep drops and river crossings. Every year dozens of vehicles get damaged or stranded. With the right vehicle, preparation and respect for conditions, they are manageable — but never take them lightly.

Do rental cars cover F-road driving?+

Most rental companies permit 4×4 vehicles on F-roads but exclude river crossings from their insurance. If your vehicle is damaged in a river crossing, you are typically liable for the full cost (often 500,000–1,500,000 ISK). Always read the rental agreement carefully and consider purchasing extra protection.

What is the easiest F-road in Iceland?+

F35 Kjölur is widely considered the easiest major highland route. It runs north-south through the interior with no major river crossings, is usually the first to open (early June) and is suitable for most competent 4×4 drivers.

Can I drive F-roads in September?+

Some F-roads remain open in September, but conditions deteriorate and closures can happen with little warning. F35 typically stays open until mid-September. F88 and F26 may close earlier. Always check road.is on the day of travel. First snowfall can close roads overnight.

Do I need a 4x4 for all F-roads?+

Yes. By Icelandic law, all roads beginning with 'F' require a 4-wheel-drive vehicle. Driving on F-roads in a 2WD vehicle invalidates your insurance and violates road law. Even if conditions look fine, you will not be covered for any damage.

Can campervans drive F-roads?+

Only 4×4 campervans are permitted, and even then most rental companies restrict them from river crossings. Standard 2WD campervans cannot legally enter F-roads. For highland camping, consider parking a 4×4 and using highland buses for Þórsmörk and Landmannalaugar.

Are river crossings covered by insurance?+

Usually not. Most rental agreements explicitly exclude river crossings from all insurance cover — including the most expensive Super CDW packages. If your vehicle is swept away or flooded, you pay. The only exception is some specialist expedition rental companies.

When do F-roads open?+

F35 Kjölur typically opens in early June. Most other major routes open late June to July depending on snowmelt. F88 (Askja) and F26 (Sprengisandur) are often last, opening in July. Dates vary significantly year to year — always check road.is before travel.