8 Essential Gear Items for Iceland Hot Springs Hiking

Picture trekking across a raw, wind-whipped volcanic plateau in Iceland, the air temperature hovering near freezing, only to descend into a hidden valley where a steaming thermal river awaits. Transitioning from active hiking to soaking in geothermal waters—and then back to the trail—requires a highly specific strategy to prevent hypothermia and stay comfortable. Having the correct gear on hand ensures this surreal wilderness experience remains a joyful highlight rather than a cold, shivering ordeal.

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Preparing for Iceland’s Unique Backcountry Hot Springs

Iceland’s backcountry pools are not manicured resort spas; they are remote, wild, and entirely exposed to the elements. Hikers must prepare for rapid transitions between high-exertion trekking in cold weather and complete immersion in hot water. There are rarely changing rooms or shelter at these wild sites, meaning clothing changes must happen quickly on wet grass or sharp volcanic rock.

Success hinges on a layering system that is easy to strip down and pull back on when wet and shivering. Every piece of gear carried must serve a dual purpose: protecting against aggressive Atlantic winds during the hike and facilitating a fast, warm transition post-soak. Overlooking even a minor item, like a reliable dry bag or thermal bottle, can turn a relaxing soak into a logistical nightmare.

Understanding Thermal Pools and Changing Trail Conditions

The trails leading to Iceland’s geothermal zones, such as Reykjadalur or Landmannalaugar, present unique terrain challenges that differ from standard mountain hikes. Volcanic soils are notoriously clay-heavy and slick when wet, and steam vents can turn surrounding paths into thick mud pools without warning. Footwear must provide aggressive traction and deep lugs to prevent slipping on saturated, unstable slopes.

Additionally, geothermal water contains sulfur, silica, and other minerals that can degrade gear over time. Steam rising from these pools carries moisture that quickly penetrates standard gear, making water-resistant and waterproof storage non-negotiable. Understanding how these minerals and microclimates behave protects expensive equipment and keeps the hiker safe on unstable ground.

Packable Towel – PackTowl Personal Microfiber Towel

• Weight: 6.4 oz (Large size)
• Material: 85% Polyester, 15% Nylon microfiber blend
• Absorbs: Up to 4 times its weight in water
• Sizing Options: Face, Hand, Body, and Beach sizes

Standing naked on a gravel riverbank in a fifteen-knot wind makes a fast-drying, highly absorbent towel an absolute lifesaver. Traditional cotton towels are bulky, heavy, and stay wet for days in Iceland’s damp climate, making them useless for multi-stop days. The PackTowl Personal Microfiber Towel solves this by absorbing four times its weight in water while packing down to the size of a water bottle.

This towel utilizes a polyester-nylon blend that feels soft against wind-chapped skin, avoiding the scratchy feel of cheap camp towels. It features a helpful snap loop, allowing it to hang from a pack exterior to dry while hiking between pools. The Polygiene odor control treatment is crucial here, as it prevents the sulfur odor of geothermal water from turning the towel rancid during a trip.

Microfiber requires specific care; do not use fabric softener, as it coats the fibers and ruins absorbency. The Body or Beach size is best for this task, as smaller sizes do not offer enough coverage to shield a shivering hiker from the wind during a quick changing session. This is ideal for hikers seeking reliable, packable warmth, but not for those who insist on the plush weight of a home bath towel.

Waterproof Pack – Sea to Summit Hydraulic Dry Pack

• Volume: 35L (ideal for day hikes)
• Material: 600D TPU-laminated heavy-duty nylon
• Waterproof Rating: IPX8 (fully submersible)
• Harness: Removable, mesh-covered foam straps

Standard hiking backpacks will quickly fail when exposed to relentless Icelandic rain and the steam clouds rising from geothermal vents. Furthermore, putting wet swimwear and towels back inside a standard pack ruins the dry layers kept for emergencies. The Sea to Summit Hydraulic Dry Pack acts as an impenetrable barrier, keeping trail dampness out and wet swimwear safely contained within.

Unlike simple roll-top dry bags that lack proper carrying systems, this pack features a fully structured, removable harness. This makes hauling gear over miles of rugged, wet terrain genuinely comfortable. The 600D TPU-laminated fabric resists punctures from sharp volcanic basalt, while the heavy-duty waist belt helps distribute the load away from the shoulders.

This pack is stiffer and heavier than a traditional daypack, requiring some break-in time for the fabric. The roll-top closure must be rolled at least three times to ensure a waterproof seal. It is perfect for hikers who want absolute security for expensive cameras and dry clothes, but it may be overkill for those doing only short, roadside walks.

Camp Sandals – Teva Hurricane XLT2 Sandals

• Outsole: Durabrasion Rubber
• Midsole: Lightweight EVA foam
• Strapping: Quick-dry webbing made from recycled plastic
• Weight: 10.25 oz per shoe

Entering and exiting a natural thermal pool often requires navigating sharp volcanic gravel, slippery algae-covered rocks, and mud that can easily cut unprotected feet. Barefoot walking is a recipe for injury, while heavy hiking boots cannot go near the water’s edge. The Teva Hurricane XLT2 Sandals provide the perfect balance of underfoot protection and water-friendly utility for these transitions.

The Durabrasion Rubber outsole delivers reliable traction on wet, muddy riverbanks, preventing slips during the crucial moments of entering the water. Adjustable heel, ankle, and toe straps ensure the sandal stays firmly attached to the foot, even when wading through moderate currents. The cushioned EVA foam midsole provides enough shock absorption to double as lightweight trail footwear for short detours.

While highly durable, these sandals have open toes, meaning they offer no protection against stubbing feet on hidden underwater rocks. They should be sized carefully, as loose straps can cause rubbing and blisters when wet. This sandal is a must-have for anyone navigating natural gravel pools, but it is not a replacement for a supportive hiking boot on technical approach trails.

Rain Shell – Patagonia Torrentshell 3L Jacket

• Membrane: 3-layer H2No Performance Standard
• Face Fabric: 100% recycled nylon ripstop
• Weight: 14.1 oz
• Pockets: Two zippered handwarmer pockets with storm flaps

Iceland’s maritime weather is famously volatile, often cycling through rain, sleet, and wind within a single hour. A flimsy windbreaker will quickly saturate, leading to rapid heat loss when hiking back from a hot spring. The Patagonia Torrentshell 3L Jacket provides a robust barrier against wind and horizontal rain, keeping the core warm and dry.

This shell stands out due to its 3-layer H2No construction, which offers superior durability and breathability compared to cheaper 2-layer alternatives. The two-way adjustable hood features a laminated visor that keeps rain out of the eyes even in heavy gusts. Crucially, the underarm pit zips allow for quick ventilation on steep climbs, preventing sweat buildup from chilling the body from the inside.

The 3-layer fabric can feel slightly stiff and crinkly compared to softshell jackets, especially in sub-freezing temperatures. Regular washing with technical detergent is required to maintain the Durable Water Repellent (DWR) finish and prevent the face fabric from wetting out. This jacket is ideal for hikers facing serious rain and wind, though casual walkers in mild weather might find the fabric less compliant than desired.

Active Shorts – Patagonia Baggies Shorts

• Inseam Options: 5-inch or 7-inch lengths
• Material: 100% recycled nylon with DWR finish
• Liner: Quick-drying mesh black liner (men’s version)
• Pockets: Vertical side pockets with drain mesh

Changing in and out of tight swimsuits on a windy trail is a cold and awkward process. Utilizing active shorts that serve as both hiking apparel and swimwear streamlines this transition immensely. Patagonia Baggies Shorts are designed to handle both tasks seamlessly, allowing hikers to jump straight into the water without a complex wardrobe change.

Constructed from rugged recycled nylon ripstop with a DWR finish, these shorts dry incredibly fast once out of the water. The vertical side pockets are designed with drain-mesh corners to prevent water from dragging the shorts down when stepping out of a pool. Additionally, the elastic waistband sits flat and comfortable under a backpack’s heavy hip belt, preventing painful chafing.

The built-in mesh liner can be a point of personal preference; some hikers prefer to cut it out to wear over personal underwear, while others appreciate the built-in support. Because the nylon has no built-in stretch, sizing up is recommended if maximum mobility on steep climbs is desired. These are perfect for active, multi-sport transitions, but less suited for those who prefer highly tailored, stretchy hiking trousers.

Insulated Bottle – Hydro Flask 32 oz Wide Mouth

• Volume: 32 oz (946 ml)
• Insulation: TempShield double-wall vacuum
• Material: 18/8 pro-grade stainless steel
• Cap: Flex Cap with honeycomb insulation

Soaking in hot, mineral-rich water is deeply relaxing, but it rapidly dehydrates the body. Drinking warm, sulfur-scented river water is unpleasant and potentially unsafe, making clean, cold water essential. The Hydro Flask 32 oz Wide Mouth bottle keeps drinking water ice-cold for up to 24 hours, even when sitting next to a boiling hot spring.

Alternatively, this bottle can be filled with hot tea or broth before leaving camp, keeping it piping hot for hours to warm up a shivering body after a soak. The 18/8 pro-grade stainless steel construction is incredibly durable, ensuring it won’t crack if dropped on hard volcanic basalt. The wide mouth opening makes it easy to fill from clean wilderness springs or add ice cubes before heading out.

When fully filled, this stainless steel bottle adds significant weight to a backpack compared to collapsible plastic bottles. It is also susceptible to cosmetic denting if dropped onto hard stones, though this does not affect its thermal properties. This is a vital companion for any thermal hiker prioritizing hydration and warmth, but ultra-lightweight purists may find the weight penalty hard to justify.

Hiking Boots – Salomon Quest 4 Gore-Tex Boots

• Upper Material: Nubuck leather and textile
• Waterproof Membrane: Gore-Tex
• Outsole: Contagrip TD rubber with deep lug pattern
• Weight: 23 oz per boot

The approach to remote hot springs often crosses terrain defined by jagged lava fields, wet marshes, and steep, gravel-covered ridges. Twisted ankles are a common hazard when carrying a pack over these uneven surfaces. The Salomon Quest 4 Gore-Tex Boots offer the structural stability and traction needed to negotiate these challenging trails safely.

Salomon’s ADV-C 4D Chassis wraps the foot, targeting sensitive articulations to provide extra stability while keeping the stride fluid. The Contagrip TD outsole features a deep, aggressive lug pattern that bites into slick mud and loose scree with equal confidence. Meanwhile, the robust Gore-Tex membrane keeps feet entirely dry when crossing shallow streams or boggy marshlands.

These are serious, heavy-duty hiking boots that require a proper break-in period before embarking on multi-mile treks. The high ankle collar, while providing superb protection, can feel restrictive to those accustomed to low-cut trail runners. They are highly recommended for hikers carrying loaded packs over rugged terrain, but unnecessary for flat, paved, or well-maintained gravel paths.

Fleece Midlayer – Patagonia R1 Daily Zip Neck

• Material: 94% recycled polyester, 6% spandex fleece
• Weight: 11 oz
• Fabric Technology: miDori bioSoft for softness, HeiQ Pure for odor control
• Fit: Slim, active fit

Once out of the warm water, body temperature drops rapidly as the damp mountain air hits the skin. A high-quality fleece midlayer is essential for trapping body heat immediately while remaining breathable enough to wick away residual skin moisture. The Patagonia R1 Daily Zip Neck provides outstanding warmth without adding excessive bulk to a packed dry bag.

This midlayer features a brushed grid-pattern interior that traps warm air close to the skin while channels easily vent excess heat during active hiking. The deep zip-neck design allows for instant temperature regulation when climbing steep hills. Its smooth outer face layers beautifully under a rain shell, preventing the friction and bunching that often occurs with loftier fleece options.

The slim, athletic cut is designed to sit close to the body for maximum thermal efficiency, meaning those who prefer a looser fit should size up. While highly breathable, it offers virtually zero wind resistance on its own, requiring a rain shell to be worn over it in breezy conditions. This is the ultimate midlayer for active transitions, but not designed for those looking for a casual, baggy sweater.

How to Safely Enjoy Iceland’s Geothermal Pools

Geothermal water is unpredictable, with temperatures varying wildly based on rainfall, wind, and seismic activity. Never jump straight into a backcountry pool; always test the water temperature with a hand or foot first. Some pools can reach scalding temperatures of over 120°F (50°C) near the source vents, which can cause severe burns within seconds.

Because geothermal pools lack chemical treatment, they can harbor naturally occurring bacteria. Keep the head above water, and avoid swallowing the water to prevent gastrointestinal illness. Be mindful of sulfur fumes in enclosed valleys or caves; if the smell of rotten eggs becomes overwhelming or causes lightheadedness, exit the area immediately.

Lastly, keep a close eye on soak times to prevent heat exhaustion and dehydration. A safe limit is twenty to thirty minutes, followed by a cool-down period and plenty of fresh drinking water from an insulated bottle. Pay attention to early signs of overheating, such as dizziness, a rapid pulse, or a headache, and step out of the water immediately if these occur.

Leave No Trace Protocol for Icelandic Hot Springs

Iceland’s volcanic ecosystem is incredibly fragile, and the warm, damp microclimates surrounding hot springs foster rare plant life and moss that can take decades to recover if stepped on. Always stay on designated trails and boardwalks to avoid crushing these delicate ecosystems. Never create new paths or clear stones to create personal soaking areas, as this accelerates soil erosion.

Pack out absolutely everything carried in, including organic waste like apple cores or banana peels, which decompose very slowly in cold northern climates. Soap, shampoo, and detergents must never enter geothermal pools or surrounding streams, even if labeled as biodegradable. Wash thoroughly before arriving at the springs to keep the natural waters clean for everyone.

Respecting fellow hikers and the quiet wilderness atmosphere is also a key component of Leave No Trace. Keep noise levels low, avoid using glass containers near the pools, and yield to others when entering and exiting the water. Leaving the site cleaner than it was found ensures these natural wonders remain open and pristine for future generations of adventurers.

Conclusion

Exploring Iceland’s wild geothermal pools is an unforgettable journey that connects hikers with the raw power of the earth. By packing highly functional, weather-resistant gear and respecting the fragile environment, safety and comfort are guaranteed. Equipping yourself with the right tools ensures that the memories of steaming waters and dramatic volcanic landscapes remain warm long after returning home.