Driving the F35 Road in Iceland: Complete Guide to the Kjölur Route

For adventurous travellers looking to escape the crowded Ring Road, exploring the raw, uninhabited interior of the island is the ultimate milestone. This legendary mountain passage, also known as the Kjölur Route, connects the lush lowlands of the south to the sweeping valleys of the north. While it does not feature any unbridged river crossings, the rough gravel surface presents significant challenges. Understanding the F35 road in Iceland and preparing for the unique conditions of the Kjölur route in Iceland will help you execute a memorable, safe expedition across this untamed volcanic landscape. From seasonal opening dates to essential vehicle requirements and the absolute best scenic stops, our comprehensive guide provides all the expert advice you need for a successful highland adventure.

What Is the F35 Road / Kjölur Route?

The legendary Kjölur Route in Iceland is one of the most historic passages in the country, cutting directly through the uninhabited interior highlands. Historically, travellers and traders used this path to cross between the northern and southern regions of the island during the brief summer months. Today, the F35 road in Iceland serves as a popular route for adventurous travellers seeking to explore the dramatic scenery of the highlands. This route covers approximately 168 kilometres of rough terrain, providing an immersive experience far away from the busy ring road crowds. It represents a landscape shaped by centuries of volcanic activity and glacial shifts.

Many travellers confuse Road 35 in Iceland with the F35 route. The southern section is a fully paved road that leads visitors to the famous Gullfoss waterfall as part of the Golden Circle tour. However, immediately north of Gullfoss, the pavement ends and transitions into the rugged Kjölur highlands. While authorities recently removed the official “F” designation from Road 35 due to infrastructure improvements, it remains a challenging gravel track. This means standard two-wheel-drive passenger cars are still legally prohibited from driving here, making a capable 4×4 vehicle absolutely mandatory to avoid severe undercarriage damage and rental contract violations. Many tourists mistakenly assume the lack of an ‘F’ means standard cars can enter, leading to costly rescue fees.

To experience this historic route safely, we highly recommend opting for a premium 4×4 vehicle rental. Our fleet of highland-approved SUVs features increased ground clearance, reinforced suspension systems, and heavy-duty tires designed specifically to handle loose rocks and deep ruts. Choosing the right 4×4 ensures a comfortable journey, guarantees full compliance with Icelandic transport laws, and gives you the peace of mind needed to focus entirely on the spectacular volcanic surroundings. Selecting a proper SUV to find the perfect match for your trip.

To help you plan your journey across this dramatic volcanic landscape, we have compiled a quick summary of the key details regarding this historic highland crossing:

Route Feature	Details and Specifications
Total Distance	Approximately 168 kilometers (104 miles)
Average Drive Time	5 to 6 hours of continuous driving
Terrain Type	Rough gravel, loose stones, washboards, and potholes
River Crossings	None (all rivers are bridged)
Required Vehicle	4×4 SUV (mandatory for rental compliance)
Key Attractions	Gullfoss, Hvítárvatn, Kerlingarfjöll, Hveravellir

Understanding the geographical layout of the Kjölur route in Iceland allows you to structure your travel itinerary efficiently. Because the path remains entirely unpaved, driving speeds are much lower than on asphalt highways. You should prepare for an average speed of 40 to 60 km/h, meaning that rushing this trip is impossible and unsafe. Taking your time allows you to appreciate the vast landscapes and unique geological formations that make this route so special.

F35 Road Map (Marked in bright blue colour)

Can You Drive the F35 Road in Iceland?

Yes, you can drive this legendary route, but only if you choose a fully compliant 4×4 vehicle and drive during summer. Although it lacks the hazardous river crossings found on other highland tracks, the unpaved surface features deep ruts, sharp volcanic stones, and loose gravel. We heavily advise against attempting this path in a standard front-wheel-drive passenger car, which would likely suffer severe undercarriage damage or lose traction. Navigating the F35 road in Iceland requires a vehicle that can withstand continuous vibrations and impacts from loose stones, ensuring a safe passage from south to north.

Driving a non-approved vehicle on the Kjölur route in Iceland is not only dangerous but also illegal under Icelandic rental agreements. Standard passenger cars do not possess the necessary clearance or tire strength to handle the harsh volcanic gravel. If you drive a 2WD vehicle on this route, you will void your insurance coverage and face steep fines. Selecting a proper SUV ensures that your vehicle is mechanically prepared for the rough terrain and fully covered by our specialized insurance options, including gravel protection. This protective coverage is highly recommended as flying rocks from oncoming traffic are a frequent occurrence. Additionally, before departing, it is highly recommended to physically inspect the condition of your vehicle’s spare tire and changing tools. Sharp volcanic stones can easily slice through standard rubber, and knowing you are fully equipped for a remote roadside swap adds an invaluable layer of security to your mountain expedition.

When planning your trip, consider the level of driving experience required for this highland crossing. While the F35 road in Iceland is considered the easiest highland route, it still demands full concentration and careful speed control. Drivers must stay alert for sudden changes in road surface, wandering sheep, and oncoming vehicles on narrow stretches. If you have never driven on loose gravel, treating this route as your practical Iceland F-road driving guide serves as an excellent introduction to the interior, provided you remain cautious and drive slowly.

Furthermore, you must prepare for the complete lack of services along the route. Once you leave the Gullfoss area in the south, you will not encounter another gas station, grocery store, or mechanical workshop until you reach the northern ring road. This remote nature makes self-sufficiency vital. You must bring enough water, food, and emergency supplies to sustain your group in case of unexpected delays or weather changes. Ensuring your vehicle is in top mechanical condition before setting off is the single most important step you can take to guarantee a successful journey. Being stranded without cellular service or provisions in the interior can turn an adventure into a dangerous situation very quickly.

When Is the F35 Road Open?

The opening dates for the highlands depend entirely on weather, snowmelt, and road conditions. Generally, authorities open the Kjölur route in Iceland to the public in early to mid-June. The southern section typically opens slightly earlier, around June 10, while the northern section opens shortly after, around June 11 to June 15. The route remains accessible throughout the summer months until early September, when winter weather begins to dump snow and make the highlands impassable.

Always check the current F35 Iceland road conditions before starting your journey on safe.hertz.is, as late snowmelt or heavy spring rain can delay the opening. Driving on the road before it is officially open is illegal and extremely dangerous, as the ground is highly sensitive to damage and vehicles can easily get stuck in deep mud. The Icelandic Road and Coastal Administration (IRCA) updates road statuses daily, ensuring that travellers have access to real-time information. Respecting these seasonal closures protects both your safety and the fragile subarctic environment. During the initial opening weeks in June, the tracks are often heavily saturated with moisture from melting snow. This creates deep, muddy ruts that require a steady throttle and constant momentum to navigate safely, even when utilizing an advanced four-wheel-drive system.

For travellers planning to head deep into the highlands during the early summer, we highly recommend choosing a robust, high-clearance 4×4 vehicle from our premium fleet. A capable four-wheel-drive system handles the washboards, loose gravel, and steep climbs along the F35 road in Iceland with ease. Selecting the appropriate category of vehicle ensures that you can navigate challenging terrain without compromising on passenger comfort or cargo capacity.

To help you monitor the seasonal availability and plan your summer schedule, review this seasonal status reference:

Highland Road Metric	Typical Status and Range
Southern Section Opening	June 5 – June 12 (weather dependent)
Northern Section Opening	June 10 – June 18 (weather dependent)
Closing Season	Early to mid-September (subject to snowfall)
Primary Road Hazard	Loose gravel, washboards, deep potholes, and high winds

Monitoring the Kjölur route in Iceland conditions ensures that you do not find yourself stranded in the middle of the country. The weather in Iceland changes rapidly, and a clear morning can quickly turn into a windy afternoon with low visibility. By keeping a close eye on the weather forecast and respecting road closures, you guarantee a safe and enjoyable journey through some of the country’s most spectacular landscapes. Never underestimate how fast an Arctic storm can roll over the open mountain passes.

Best Stops Along the F35/Kjölur Route

This historic route offers a wealth of stunning natural attractions that make the long, bumpy drive highly rewarding. As you travel along the F35 road in Iceland, you will encounter diverse landscapes ranging from massive glaciers to steaming geothermal vents. Taking the time to explore these stops allows you to witness the raw volcanic energy that continues to shape the island. From historical landmarks to natural hot springs, the highland interior holds some of the country’s best-kept secrets.

For a comfortable and fuel-efficient option to reach these attractions, consider renting a mid-size 4×4 SUV, which balances excellent handling with spacious interiors. This category of vehicle is perfect for couples or small families who want a reliable ride for their highland adventure, adapting quickly to changing gravel surfaces as you travel from one spectacular stop to another. It provides a great balance of comfort, economy, and performance for the Kjölur route in Iceland, giving you the agility of a compact car with the clearance and stability needed for unpaved roads.

The southern entrance of the route begins just north of Gullfoss, one of Iceland’s most magnificent waterfalls, where the Hvítá River plunges into a deep canyon. As you drive further north, you will reach the beautiful Hvítárvatn lake, a glacial lake situated at the base of the Langjökull glacier. The lake’s milky turquoise water, filled with floating icebergs, offers incredible photographic opportunities. It is a peaceful place to stop, stretch your legs, and enjoy the pristine arctic silence. The views of the glacier tongue reaching directly into the water are absolutely breathtaking.

A short detour from the main road leads to Kerlingarfjöll, a dramatic mountain range known for its vibrant geothermal valleys and active steam vents. This area features striking orange rhyolite mountains, bubbling mud pools, and extensive hiking trails that wind through the steaming landscape. It is widely considered one of the most beautiful and unique destinations in the Icelandic highlands. Spending a few hours hiking here is an absolute must for any nature lover traveling the F35 road in Iceland. The contrasting colors of yellow clay, green moss, and white snow create a surreal visual experience.

Further north, you will find Hveravellir, a stunning geothermal nature reserve located between the Langjökull and Hofsjökull glaciers. This unique site features beautiful geothermal pools, boiling water vents, and a natural hot spring where visitors can soak in warm, mineral-rich waters. It also offers basic services, including a mountain hut, a campsite, and a small cafe. Stopping at Hveravellir provides a perfect opportunity to relax and recharge during your long drive across the Kjölur route in Iceland. Soaking in the warm water while surrounded by glaciers is an experience you will cherish forever.

Depending on your travel style and schedule, you can choose between a fast-paced 1-day crossing or a more relaxed 2-day itinerary. A 1-day trip is ideal for travelers who want to experience the highlands while transiting from south to north, allowing for brief stops at the main sights. However, we highly recommend a 2-day itinerary, which allows you to spend a night at Kerlingarfjöll or Hveravellir. This option gives you ample time for long hikes, relaxing hot spring soaks, and enjoying the magical midnight sun in the heart of the wilderness.

Best Rental Car for Driving F35 in Iceland

Selecting the right vehicle is the most critical decision you will make when planning your highland adventure. The rough, unpaved surface of the F35 road in Iceland demands a vehicle with high ground clearance, sturdy suspension, and reliable four-wheel-drive capability. Booking a dedicated Hertz Iceland 4×4 rental vehicle eliminates the risk of mechanical failure, voided insurance, and an unsafe journey through remote areas that standard 2WD passenger cars simply cannot handle. 

To start your journey as smoothly as possible, you can pick up your 4×4 directly from our Keflavik Airport car rental desk immediately upon your arrival in the country. This convenient location allows you to load your luggage, receive expert safety advice from our local staff, and head straight out onto the road. Booking your vehicle in advance ensures that you secure the perfect 4×4 for your specific itinerary, especially during the busy summer season when demand for highland-capable vehicles is exceptionally high. Our airport desk provides fast-track services, complete vehicle inspections, and full demonstrations of your chosen vehicle’s 4×4 features to ensure you feel confident from the moment you start the engine.

When choosing a rental vehicle, we have compiled our top fleet recommendations based on your group size and driving needs:

• Solo Travellers and Couples: Mid-size 4×4 SUVs, such as the Dacia Duster or Suzuki Vitara, are excellent choices for those who want an easy-to-handle vehicle that easily tackles the rugged tracks of the Kjölur route in Iceland.
• Families and Heavy Gear: Choosing a large SUV rental in Iceland, like the Toyota Land Cruiser, offers superior comfort, massive storage space, and the extra power needed to navigate the long washboard stretches of the interior.
• Premium Highland Explorers: If you seek the ultimate robust driving experience across mountain passes, securing a premium 4×4 hire Iceland model like the Land Rover Defender guarantees maximum ground clearance, high traction control, and unmatched durability.

It is also vital to consider insurance coverage when renting a car for the highlands. Standard collision damage waivers often do not cover the damage caused by loose gravel, which is the most common hazard on the F35 road in Iceland. We strongly recommend adding gravel protection and super collision damage waiver options to your rental agreement to protect yourself against unexpected repair costs. Having the appropriate insurance coverage allows you to enjoy the stunning scenery without worrying about the financial consequences of minor stone chips or windshield damage.

Full-size Car Rental Recommendation

F35 Driving Safety Tips

Safety must always be your top priority when driving on the F35 in Iceland or any other highland route. Before you set off, we highly recommend visiting our newly launched safety portal at safe.hertz.is, a comprehensive resource packed with safe driving tips and live updates designed to keep you secure. The unpredictable arctic weather, rough road surfaces, and remote locations require drivers to remain highly alert and fully prepared. By following a few essential safety rules, you can ensure a safe, smooth, and unforgettable journey across the island’s interior. Remember that emergency services can take several hours to reach remote highland areas, making prevention the best safety strategy.

First and foremost, always respect the posted speed limits and adjust your speed according to the road conditions. While the general speed limit on gravel roads in Iceland is 80 km/h, this is often too fast for the rough, potholed sections of the F35 road in Iceland. Driving too fast on loose gravel can easily lead to a loss of control, especially when navigating sharp curves or meeting oncoming vehicles. Slow down, keep a safe distance from other cars, and drive defensively at all times to avoid throwing stones at other vehicles.

Another critical safety tip is to check the weather and road conditions daily before setting off. The weather in the highlands can change with extreme speed, and heavy rain or strong winds can quickly make driving difficult. Ensure that you have a reliable GPS navigation system and download offline maps of the area, as cell phone reception can be spotty in remote highland locations. Additionally, always let someone know your travel plans. This simple step ensures that emergency services can quickly locate you if you encounter any difficulties along the Kjölur route in Iceland.

Finally, ensure that you have a full tank of fuel before entering the highland route. There are no gas stations along the F35 road, and the nearest fueling stations are located near Gullfoss in the south and Varmahlíð or Blönduós in the north. Driving on rough gravel roads consumes more fuel than driving on paved highways, so it is crucial to top off your tank to avoid getting stranded in a remote area. Carrying some extra water, snacks, and warm clothing in your vehicle is also highly recommended. Go with the gold standard of travel preparation and keep your vehicle stocked with emergency supplies.

We also advise you to stay on the marked roads at all times. Off-road driving is strictly illegal in Iceland and carries extremely high fines, as the volcanic soil and subarctic vegetation are highly fragile and can take decades to recover from tire tracks. If you encounter a section of the road that is blocked or flooded, do not attempt to drive around it by leaving the trail. Instead, assess the situation carefully, wait for assistance, or turn back and choose an alternative route. Respecting the local environment ensures that these spectacular landscapes remain preserved for future generations of travelers.

Common Questions About Driving F35 in Iceland

To help you prepare for your journey, we have compiled answers to some of the most frequently asked questions about the F35 road in Iceland. These answers provide quick, practical information to ensure that your highland trip is as safe and enjoyable as possible.

Do you need a 4×4 to drive the F35 road in Iceland?

Yes, you absolutely need a 4×4 vehicle to drive this route. Even though the road lacks unbridged river crossings, the rough, unpaved gravel surface features deep potholes, washboards, and loose stones that standard 2WD vehicles cannot safely navigate. Furthermore, driving a 2WD passenger car is illegal under local rental agreements and will void your insurance coverage. Choosing a 4×4 ensures your safety and compliance with local laws.

When is the F35 road open in Iceland?

The road is typically open from early to mid-June until early to mid-September, depending on snowmelt and weather conditions. Always check the current Kjölur route in Iceland status on the official website before attempting to drive, as early summer snow or late autumn winter storms can make the route impassable outside of these months. Never attempt to drive on closed roads, as it is illegal and highly dangerous.

How long does it take to drive the F35/Kjölur Route?

It generally takes about 5 to 6 hours of continuous driving to complete the entire 168-kilometer route from Gullfoss to the northern Ring Road. However, you should allow a full day or even two days to complete the journey, as you will want to stop and enjoy the spectacular scenery at Hvítárvatn, Kerlingarfjöll, and Hveravellir along the F35 road in Iceland. Rushing through the highlands is not recommended due to safety risks and the incredible sightseeing opportunities.

Are there gas stations on the F35 road?

No, there are no gas stations or vehicle charging points along the F35 route. You must fill up your tank completely before starting your journey, either near the Golden Circle in the south or along the Ring Road in the north. Ensuring a full tank of fuel is one of the most important safety requirements for the Kjölur route in Iceland. Keep a close eye on your fuel gauge throughout the drive.

Is F35 a good route for a first highland drive in Iceland?

Yes, this route is widely considered the best option for a first highland driving experience in Iceland. Because it features no unbridged river crossings, it is much less technically challenging than other famous F-roads, such as the F206 or F208. As long as you rent a reliable 4×4, drive slowly, and carefully monitor the F35 road conditions, you can enjoy a safe and memorable adventure in the heart of the country’s wild interior. 

Driving the F35 road across the Kjölur Route is an unparalleled opportunity to witness the hidden, wild core of Iceland. It offers the thrills of highland exploration without the stress of navigating treacherous, unbridged rivers, making it the definitive choice for an introductory interior road trip. From soaking in the geothermal warmth of Hveravellir to hiking the multi-colored ridges of Kerlingarfjöll, this pathway rewards patient and prepared drivers with memories that standard tourist highways simply cannot provide. However, the ultimate key to conquering this ancient passage lies in your vehicle choice and tactical preparation. Securing a reliable, highland-approved 4×4 SUV from our Keflavík Airport office ensures that your vehicle is fully compliant, mechanically ready, and legally insured for the gravel tracks ahead. Respect the rapid shifts in Arctic weather, pack your supplies wisely, drive at a safe and steady pace, and prepare to embark on the ultimate self-drive expedition through Iceland’s magnificent interior highlands.

Related Readings