Day Trek to Hengill and the Lost Hot Spring

Hot springs meet real navigation skills. This day trek from the Thingvellir UNESCO area to Hengill pairs Hengill hot springs with an orienteering lesson in wild terrain, then you end with a soothing soak. The tradeoff is it is genuinely challenging, with about 17 km and 1,010 m of elevation gain, so come fit and expect fast-changing weather.

I like that the vibe stays human-sized, with a maximum of 12 travelers. With a 50-minute drive from Reykjavik and a 10:00 am start, the day feels structured but not rushed, and you get real coaching time on the trail.

One more practical note: the hot spring is included, but lunch and gear are not. If you show up without layers and the right swim kit, the hike may feel harder than it needs to be.

Key highlights worth planning for

• Small group max 12 keeps the pace steady and the navigation lesson more hands-on
• Orienteering with compass and altimeter so you learn a real skill, not just a walking route
• Hengill geothermal area and hot spring time gives you a reward that is part of Iceland, not just a photo stop
• Challenging climb (17 km, 1,010 m gain) with a summit-style payoff if your legs are ready
• Bring swimsuit and towel because the soak is included, but the kit is on you

Hengill and Thingvellir, the good reason this hike exists

This is not a quick walk to a viewpoint. You are working your way up from the foot of the Thingvellir region, then turning toward Hengill, a geothermal area where the ground and water are shaped by Iceland’s ongoing energy beneath your feet.

What I like is that your day connects three things people often experience separately: hiking, navigation, and a hot spring reset. The orienteering lesson matters because it changes how you move through the terrain. You are not just following tracks, you are learning how to read your surroundings and make confident calls.

Also, this is positioned as a day trek rather than a deep dive into the national park itself. That helps you get variety and a full day without feeling like you spent hours in one narrow zone.

If you prefer easy, predictable trails, this will not feel like that. But if you want a day that feels Iceland-shaped, with effort and reward, the setting is a strong match.

The 10:00 am start, 50-minute drive, and how the day flows

You start at 10:00 am, and you should arrive about 15 minutes early at the designated meeting point near Nesjavallaleid. The activity ends back at that same meeting area, so you are not stuck planning a second transfer after your soak and stretch.

The schedule is built around a big hiking block, with the day clocking in around 9 hours total. You also get time at Hengill, including a short initial stop experience before the longer push. Translation: plan your energy like a full hiking day, not a half-day outing.

Because weather can change rapidly in Iceland, your guide will likely adjust what you do minute to minute depending on conditions. That is normal here, but it is also why you should dress like the forecast is optimistic.

What makes this feel good in practice is the structure. You get a plan, you get expert leadership, and you also get flexibility if the sky decides to switch outfits.

Stop at Hengill: where you transition from road to wild terrain

The day begins with a parking lot meeting point along Nesjavallaleid, near the start of the trail. Even before the real climbing begins, Hengill is already showing its character through geothermal vibes and rugged terrain.

This is where the day becomes active. You are shifting from the simpler world of roads and buildings into a more open setting where your footing, pacing, and situational awareness actually matter.

At this stage, do not rush. If you are new to challenging Iceland hikes, this is the moment to settle your rhythm: warm up your legs, tighten your pack, and keep your layers easy to adjust. Wind and low clouds can show up fast, and you will be glad you can react quickly.

You are also in a good position to start thinking like a navigator. Even if you already know how to use a compass, the lesson is about applying it to the kind of terrain where it is easy to lose your bearings.

Orienteering lesson on rough ground: a skill you will use again

The big differentiator here is the orienteering lesson guided by a licensed team that includes an International Mountain Leader. You learn how to navigate with a compass and an altimeter, and the point is not just to find your way that day, but to understand how to do it reliably.

In plain terms, altimeters help when visual clues are limited, like when fog chops up the view. A compass helps you stay on your intended line even when trails are faint, conditions are messy, or you are taking routes that are not perfectly signposted.

This is the type of skill that turns a hike from a passive experience into an active one. And it is a big deal for solo-minded travelers too, because you leave with confidence and understanding, not just a memory.

If you are worried this will be too technical, it is worth remembering that the lesson happens in the middle of an actual trek. That means you practice with real stakes, real timing, and real terrain, so it sticks.

One caution: if you struggle with physical pace, you might feel mentally rushed during training. Do not try to brute-force the hike. Use the coaching time, ask questions early, and let your pace match the group and the conditions.

The climb: 17 km, 1,010 m gain, and a summit-style reward

This is a challenging trek for a reason. You are looking at roughly 17 km over the course of the day with about 1,010 m of elevation gain. You also have a climb component toward a summit area, around 450 m elevation gain, which is where the views can start to hit hardest.

What you should expect on a hike like this is variety in effort. Steeper sections can slow you down even if you feel strong. Weather can make footing slower too, especially with wind and wet ground.

The good news is that Iceland rewards effort with perspective. Once you are higher, you often get broader sight lines and a clearer read of how geothermal zones and faulted terrain sit in the larger region. Even when visibility is not perfect, the work you did still makes the landscape feel more readable.

This is also where your gear choices show up. If your footwear is not up to Icelandic mud and your layers are not adjustable, you will feel it here, not later.

If you do this with realistic pacing, you will likely enjoy the whole day more. If you go out too fast, the return and hot spring part will feel less satisfying.

The Lost Hot Spring soak: included, but you must show up ready

The hot spring is included. That is the headline reward at the end of a tough hike, and it is exactly the kind of experience that makes a long day feel worth it.

However, here is the practical twist: swimsuit and towel are not included. You need to bring them. If you forget, you might still be able to experience the geothermal setting in some way, but the whole point is the soak, and you do not want to end your trek chilly and disappointed.

Think about your swim kit like hiking kit. You want something that dries or at least stays manageable once you are back out of the water. Also bring a plan for how you will handle wet clothing during the hike. Iceland weather plus damp layers can turn a fun day into a long chill.

The good part: because the hot spring is part of the structure, you get a built-in decompression moment. This is not just a random stop. It is timed as a payoff, after the climb and after the navigation practice.

What you should pack so the day does not beat you first

The tour lists several items not included, and you should treat that as a checklist. At minimum, plan around cold, wind, and rain, because weather can change rapidly.

You should bring:

• Your own swimsuit and towel for the hot spring
• Hiking shoes (required for comfort and safety on a challenging trek)
• A waterproof jacket and pants, plus a cap and gloves
• A spare t-shirt, because you are going to get wet one way or another
• Lunch, snacks, and bottled water are not included either

If you want one simple strategy, build your plan like this: wear what works for hiking, then have something ready for the colder moments and for after the soak. Nothing ruins the hot spring magic like trying to dry off in wind with soaked clothes and no plan.

Also, since you will be learning navigation with compass and altimeter, it helps if your hands are warm enough to work quickly. Gloves matter for comfort even when you think it is not that cold yet.

Price and value: what $180.14 actually buys you

At about $180.14 per person for a 9-hour challenging trek, the cost only makes sense if you think the package value matches what you want from Iceland.

Here is what you are paying for that is not just a bus ride:

• Licensed and certified local guides and an International Mountain Leader
• An orienteering lesson (compass and altimeter training)
• A hot spring included as part of the experience
• All fees and taxes
• Group discounts and a mobile ticket option

When tours are priced higher, it is usually because of guide time, safety planning, and specialized instruction. That is what you are getting here. The orienteering component alone is a different category than most standard hikes.

What is not included also clarifies value. You still need to budget for lunch, snacks, and water, plus bring core clothing like waterproof outer layers and swim gear. If you already have the right gear, the price can feel very fair. If you have to buy almost everything last minute, it will sting more.

My take: if you want Iceland that is active, practical, and slightly adventurous in a skill-building way, this is good value for the hours and the guidance you receive.

Who this trek is for, and who should skip it

This is best for people who like to move, think, and learn on the trail. The minimum age is 16+, and you should have strong physical fitness for a challenging trek.

You will likely enjoy it if you:

• Want more than a viewpoint stop and a photo
• Like navigation skills and problem-solving outdoors
• Prefer small-group guiding, with a max group size of 12
• Are comfortable hiking 17 km with about 1,010 m elevation gain

You might want to skip this if:

• You want an easy stroll or minimal climbing
• You do not have waterproof layers and proper hiking shoes
• Your fitness is limited and you would struggle with steady uphill effort

Also, if you are solo and worried about feeling out of place, a small guided group can actually be a comfort. The day is structured, and you have a trained leader to help you stay on track, both physically and with navigation.

Should you book this day trek to Hengill and the Lost Hot Spring?

If you are the type of traveler who wants Iceland that feels lived-in, this is a strong yes. The mix of a tough climb, real orienteering coaching, and an included hot spring soak gives you a full, memorable arc.

Book it if you can handle the physical side and you will show up prepared with waterproof layers, sturdy hiking shoes, and your swimsuit and towel. If you are missing those basics, the experience can quickly become stressful instead of fun.

If you want an easy day, or you hate the idea of navigation practice outdoors, pick a gentler hike. But if you like effort with a reason, this one earns its place.

FAQ

How long is the trek?

The duration is approximately 9 hours.

Where does the activity start and end?

It starts at the designated meeting point near Nesjavallaleid (listed as 99PW4P67+6X599PW4P67+6X) and ends back at the same meeting point.

What time does the tour start?

The start time is 10:00 am, and you should meet 15 minutes before departure.

Is this trek easy or challenging?

It is rated as challenging, and travelers should have a strong physical fitness level.

What are the hike distance and elevation gain?

The trek is about 17 km (10.5 miles) with an elevation gain of about 1,010 m (3,314 ft).

Do I need to bring a swimsuit and towel for the hot spring?

Yes. The hot spring is included, but swimsuit and towel are not included.

What is included in the price?

Included items are all fees and taxes, an orienteering lesson, licensed and certified local guides, an International Mountain Leader, and the hot spring.

What is not included?

Lunch, snacks, bottled water, hiking shoes, swimsuit and towel, waterproof jacket and pants, cap and gloves, and a spare t-shirt are not included.

How many people are in the group?

The maximum group size is 12 travelers.

What is the cancellation policy?

You can cancel for free up to 24 hours in advance for a full refund. Weather can also affect the experience, and if it is canceled due to poor weather, you are offered a different date or a full refund.