Nuestra conclusión

Si estás buscando unas zapatillas de senderismo estables y resistentes para tus rutas de varios días con una mochila a cuestas, las La Sportiva Spire GTX deberían ser la primera opción que se te venga a la cabeza. Nos sorprendió la sujeción que ofrecen sin ser demasiado pesadas, ya que en los pies se sienten como unas botas de senderismo pero sin ser de caña alta. ¡Y son tan duraderas como un tanque! Vamos, que atravesaron cualquier obstáculo con el que nos encontramos, y nuestros pies no sintieron nada de nada. Además, sus canales de ventilación únicos ayudan a que no se te tuesten los pies en tus aventuras más largas.

Pros

  • Las sientes como si fuesen unas botas de trekking de caña baja
  • Estabilidad y sujeción inigualables
  • Impermeabilidad excelente con cierta transpirabilidad
  • Te protegen de las rocas y otros obstáculos como ningunas
  • Agarre y capacidad de frenado excelentes
  • Estructura robusta y duradera
  • Hay más tallas disponibles así que el ajuste es más preciso

Contras

  • Pueden sentirse inestables en terrenos rocosos y accidentados
  • Forro interior frágil
  • Se vuelven incluso más firmes con el frío

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Who should buy

We believe that it's worth investing in the La Sportiva Spire GTX if:

  • you need a shoe for backpacking trips with a heavier pack but don't want a high-top boot
  • you prefer sturdier shoes with exceptional stability and support
  • you need a waterproof shoe but could use some in-shoe aeration as well
  • you could use a more pronounced heel brake for steep descents

La Sportiva Spire GTX review

Who should NOT buy

The Spire GTX's high price point can be a deal breaker for many people. But luckily, there are a few solid alternatives with similar features but more moderate price tags.

 

The Salomon X Ultra 4 GTX is equally stable but is also notably lighter, more nimble, and flexible. Another excellent option is the Adidas Terrex Swift R3 GTX.

La Sportiva Spire GTX lab test

Transpirabilidad

Testing the La Sportiva Spire GTX, we were particularly curious about its unique ePE Gore-Tex Surround waterproofing. Unlike the conventional GTX, this technology encourages ventilation not only in the upper but also in the sole! A 360-degree ventilation of sorts.

La Sportiva Spire GTX Surround ventilation channels
We were truly amazed by these air channels. They are found all around the midsole on both sides of this La Sportiva shoe.

Of course, we are not talking about full-fledged breathability here because it is a waterproof shoe after all. As you can see from our breathability test below, none of the smoke we pumped into the shoe was able to escape through the fabric.

And yet, the GTX Surround helped our feet feel a little less suffocated in the Spire GTX because it managed to expel some of the built-up heat from the shoe.

On top of the shoe, the synthetic Nano Cells 2.0 material is responsible for maintaining a balance between waterproofing and breathability.

La Sportiva Spire GTX Nano Cells 2.0

Synthetic overlays dominate the upper protecting it from water and debris while the mesh inserts provide some essential aeration.

La Sportiva Spire GTX Breathability under microscope

Even though the Spire GTX has slightly more airflow than shoes with standard Gore-Tex, we didn't find the difference sufficient enough to increase the overall breathability score to 2. It is still a warm and watertight shoe with the lowest breathability score - 1 out of 5.

Resultados de las pruebas
Spire GTX 1
Promedio 2.7
En comparación con 24 zapatillas de senderismo
Número de zapatillas
1
Transpirabilidad
5

Durabilidad

Durabilidad de la parte delantera

The La Sportiva Spire GTX is one of the sturdiest hiking shoes we've tested. But even though its high-wear areas are very thoughtfully reinforced, there are a few weak parts to be aware of.

For example, the Nano Cell areas that are not covered with thick protective overlays (like the top of the toebox). Exposing it to sandpaper for 12 seconds, our Dremel left some notable scuffing which affected the shoe's waterproofing features.

La Sportiva Spire GTX Toebox durability comparison

But because it was not a gaping hole, we kept the toebox durability score at a moderate 3 out of 5.

The mudguard, on the other hand, has fantastic abrasion resistance. You can be confident that bumping into roots and rocks is nothing more than a light tickle for this burly piece.

Resultados de las pruebas
Spire GTX 3
Promedio 3.7
En comparación con 18 zapatillas de senderismo
Número de zapatillas
1
Durabilidad de la parte delantera
5

Durabilidad del acolchado del talón

To our disappointment, the mesh lining on the inner side of the shoe's collar failed to resist the Dremel as well.

Considering all the in-shoe friction this area experiences, we expected a more hard-wearing material, especially after seeing how well the same part did in other hiking shoes.

La Sportiva Spire GTX Heel padding durability comparison

Thus, we rated the Spire's heel padding durability with a low score of 2 out of 5. 

Resultados de las pruebas
Spire GTX 2
Promedio 3
En comparación con 17 zapatillas de senderismo
Número de zapatillas
1
Durabilidad del acolchado del talón
5

Dureza de la suela

On the bright side, the outsole of this La Sportiva shoe proved to be indestructible. Our durability tests below prove that its Vibram rubber is pretty hard and abrasion-resistant.

La Sportiva Spire GTX Outsole hardness

Pressing our Shore C durometer against the outsole returned an above-average reading of 86.1 HC. As a firm rubber compound, it is capable of taking more abuse before it starts to show significant signs of wear as opposed to softer rubber.

Resultados de las pruebas
Spire GTX 86.1 HC
Promedio 84.8 HC
Utilizamos una media de cuatro pruebas. La foto muestra una de esas pruebas.
En comparación con 24 zapatillas de senderismo
Número de zapatillas
65.0 HC
Dureza de la suela
94.1 HC

Durabilidad de la suela

You can see how stoically the Spire's outsole resisted the sandpaper tip of our Dremel in the test below.

Even after 22 seconds of drilling it at 10K RPM speed, the rubber sustained as little as 0.8 mm of damage. Tread loss is not even the right word here, more like brushing the dust off the surface.

La Sportiva Spire GTX Outsole durability test
Resultados de las pruebas
Spire GTX 0.8 mm
Promedio 1.0 mm
En comparación con 17 zapatillas de senderismo
Número de zapatillas
0.0 mm
Desgaste de la suela
2.0 mm

Grosor de la suela

The outsole thickness is also pretty solid showing 2.0 mm on our caliper. Paired with 4.3 mm deep lugs, it promises a long lifespan for a hiking shoe.

La Sportiva Spire GTX Outsole thickness
Resultados de las pruebas
Spire GTX 2.0 mm
Promedio 2.5 mm
En comparación con 24 zapatillas de senderismo
Número de zapatillas
1.6 mm
Grosor de la suela
4.0 mm

Peso

Considering the shoe's beefy design, we are surprised that it's not among the heaviest hiking shoes on our roster.

La Sportiva Spire GTX Weight

Showing 14.8 oz (420g) in a men's US size 9, the La Sportiva Spire GTX is only 1.5 ounces heavier than average. The shoe never weighed our feet down as much as we thought it would.

Resultados de las pruebas
Spire GTX 14.82 oz (420g)
Promedio 13.26 oz (376g)
En comparación con 24 zapatillas de senderismo
Número de zapatillas
6.49 oz (184g)
Peso
17.14 oz (486g)

Amortiguación

Altura de la suela en la zona del talón

Ladies and gentlemen, we have a height champion in our lab! The Spire GTX towers over all the other hiking shoes at a whopping 39.1 mm!

La Sportiva Spire GTX Heel stack

Having this much platform translates to unparalleled foot protection from the trail obstacles and amazing support for the longest backpacking hauls. We felt 100% isolated from the trail as this La Sportiva shoe gobbled roots and rocks like chicken nuggets.

On the downside, this tall shoe will not be your best friend on rocky descents or any other shaky surfaces as it feels a bit tippy.

Resultados de las pruebas
Spire GTX 39.1 mm
Promedio 32.0 mm
En comparación con 24 zapatillas de senderismo
Número de zapatillas
9.9 mm
Altura de la suela en la zona del talón
39.1 mm

Altura de la suela en el antepié

The shoe's platform gets notably thinner in the forefoot but it still packs plenty of foam to keep the balls of feet well cushioned.

La Sportiva Spire GTX Forefoot stack

A forefoot stack of 23.1 mm is slightly taller than average too.

Resultados de las pruebas
Spire GTX 23.1 mm
Promedio 21.0 mm
En comparación con 24 zapatillas de senderismo
Número de zapatillas
10.7 mm
Altura de la suela en el antepié
31.0 mm

Drop

This La Sportiva shoe also beats records when it comes to its steep heel-to-toe drop of 16 mm!

La Sportiva Spire GTX Drop

Even if you never pay attention to drop in hiking shoes, you are very likely to feel your heels elevated in the Spire GTX.

Is it a bad thing? Not in a backpacking shoe. This setup puts your feet in a more ergonomic position to carry heavier loads on longer distances. It prevents your Achilles and calves from working overtime.

Resultados de las pruebas
Spire GTX 16.0 mm
Promedio 11.0 mm
En comparación con 24 zapatillas de senderismo
Número de zapatillas
-0.8 mm
Drop
16.0 mm

Suavidad de la mediasuela

Despite its use of Compression Molded EVA, there is hardly any compression in the La Sportiva Spire GTX. It is a stout shoe that's meant to be stable above all else.

Measuring its midsole softness with a Shore A durometer, we got a higher-than-average reading of 32.6 HA. That is 20% firmer than a typical hiking shoe midsole.

La Sportiva Spire GTX Midsole softness

But even though plushness and Spire exist in parallel universes, we found that the shoe took very good care of our feet on long hikes. We never felt as beat up after wearing this La Sportiva shoe as we did after more grounded options.

Resultados de las pruebas
Spire GTX 32.6 HA
Promedio 27.5 HA
Utilizamos una media de cuatro pruebas. La foto muestra una de esas pruebas.
En comparación con 24 zapatillas de senderismo
Número de zapatillas
13.5 HA
Suavidad de la mediasuela (de blanda a firme)
39.0 HA

Diferencia de la suavidad de la mediasuela en frío

If you are planning a multi-day hike where temperatures drop very low at night, it is good to know that the Spire GTX gets even firmer in cold conditions.

La Sportiva Spire GTX Difference in midsole softness in cold

We kept the shoe in the freezer for 20 minutes and then repeated the durometer measurement. The reading went from 32.6 HA at room temperature to 38.0 HA after the freezer test. With a 16.5% change in firmness, this La Sportiva shoe is going to need some breaking in first thing in the morning.

Resultados de las pruebas
Spire GTX 16.5%
Promedio 17.8%
En comparación con 24 zapatillas de senderismo
Número de zapatillas
0%
Diferencia de la suavidad de la mediasuela en frío
100%

Grosor de la plantilla

As a cherry on top, the Spire GTX uses an OrthoLite insole for a more pleasant foot-to-boot contact.

La Sportiva Spire GTX Insole thickness

Even though it is slightly thinner than average at 4.2 mm, its ergonomic contours still make it feel nice and cozy.

And a nice bonus: this Ortholite Hybrid is made with 5% recycled rubber and 15% production waste foam.

Resultados de las pruebas
Spire GTX 4.2 mm
Promedio 5.5 mm
En comparación con 23 zapatillas de senderismo
Número de zapatillas
2.6 mm
Grosor de la plantilla
8.6 mm

Estabilidad

Prueba de estabilidad lateral

If you are looking for boot-level stability in a low-cut shoe, the La Sportiva Spire GTX is built just like that. From the bottom up, its construction kept us steady and surefooted as we hauled a heavy pack across challenging terrain.

The most prominent stability component of the Spire is its STB control system.

La Sportiva Spire GTX STB Control

Its tall and sturdy sidewalls wrap around the foot on both sides creating a secure cradle and preventing any unfortunate buckling.

Rigidez torsional

Carrying up to 20% of your body weight on the back, the last thing you want to experience is foot wobbling. That's why unyielding shoes like the La Sportiva Spire GTX exist.

Our attempts at twisting this hiking shoe in our manual test had very little success. Thus, we rated its torsional rigidity with an above-average score of 4 out of 5.

La Sportiva Spire GTX arch support

Even if you have conditions like flat feet followed by overpronation (excessive inward foot rolling), you are going to feel very stable and supported in the Spire.

Resultados de las pruebas
Spire GTX 4
Promedio 3.5
En comparación con 24 zapatillas de senderismo
Número de zapatillas
1
Rigidez torsional
5

Rigidez del contrafuerte del talón

The shoe's highly rigid heel counter also takes care of any unwanted play in the rearfoot.

Giving the back of the shoe a good push and squeeze, we felt so much resistance that we never hesitated to rate the shoe's heel counter stiffness with the maximum score - 5 out of 5!

Resultados de las pruebas
Spire GTX 5
Promedio 3.6
En comparación con 24 zapatillas de senderismo
Número de zapatillas
1
Rigidez del contrafuerte del talón
5

Anchura de la mediasuela en el antepié

Interestingly enough, the La Sportiva Spire GTX feels exceptionally stable even without a very wide sole.

La Sportiva Spire GTX Midsole width in the forefoot

Our caliper measured only 103.9 mm in the widest part of the shoe's midsole in the forefoot.

Resultados de las pruebas
Spire GTX 103.9 mm
Promedio 110.5 mm
En comparación con 24 zapatillas de senderismo
Número de zapatillas
103.0 mm
Anchura de la mediasuela en el antepié
117.6 mm

Anchura de la mediasuela en la zona del talón

The heel of the shoe is also notably narrower than average showing 81.4 mm in the widest part.

La Sportiva Spire GTX Midsole width in the heel

If you are coming from a chunky platform (like those of Hoka and KEEN), we should warn you that the La Sportiva Spire GTX is going to feel different. In our wear test, we felt as if the shoe's smaller landing area forced us to be more conscious of our foot placement in the first few miles. But after a short adjustment period, we didn't experience any issues.

Resultados de las pruebas
Spire GTX 81.4 mm
Promedio 86.8 mm
En comparación con 24 zapatillas de senderismo
Número de zapatillas
64.2 mm
Anchura de la mediasuela en la zona del talón
101.6 mm

Flexibilidad

Rigidez

With its reinforced construction and sturdy STB control system, we were not surprised that the La Sportiva Spire GTX is one of the stiffest hiking shoes we've tested.

It took about 30% more force to bend the Spire to a 90-degree angle compared to an average hiking shoe. But as a result, you get the benefit of a more stable platform with more predictable steps.

Resultados de las pruebas
Spire GTX 38.3N
Promedio 29.3N
En comparación con 24 zapatillas de senderismo
Número de zapatillas
1.8N
Rigidez
54.0N

Diferencia de rigidez en frío

We were glad to discover that the Spire GTX doesn't get significantly stiffer in low temperatures. After 20 minutes of cold exposure, the shoe needed only 5.5% more force to bend.

La Sportiva Spire GTX Difference in stiffness in cold
Resultados de las pruebas
Spire GTX 5.5%
Promedio 27.9%
En comparación con 24 zapatillas de senderismo
Número de zapatillas
0%
Diferencia de rigidez en frío
100%

Agarre / Tracción

Profundidad del dibujo de la suela

Featuring a pretty toothy and aggressively-looking tread, the grip of the Spire GTX didn't falter us once. The shoe kept a hard bite as we were navigating rocks and creeks, forging through some loose terrain, and wading the river banks.

La Sportiva Spire GTX Lug depth

Our caliper measured the shoe's lug depth at 4.3 mm which feels equally at home on hard-packed trails, rocks, and muddy stretches. This is thanks to the slanted and opposing angles of the treads of the Vibram XS Trek outsole.

La Sportiva Spire GTX outsole

The shoe's Impact Brake System inspired confidence on steep descents as well. It is much more pronounced compared to other hiking shoes.

La Sportiva Spire GTX vs Salomon X ULtra 4 GTX heel brake

Resultados de las pruebas
Spire GTX 4.3 mm
Promedio 4.0 mm
En comparación con 24 zapatillas de senderismo
Número de zapatillas
2.1 mm
Profundidad del dibujo de la suela
5.0 mm

Tallaje y ajuste

Longitud interna

Because La Sportiva's approach to sizing is different from most outdoor brands, it is worth taking a closer look at the brand's size chart.

You will see that in addition to regular full and half US sizes like 8, 8.5, and 9, there will be extra sizes like 8.5+, 10.5+, etc. Following the brand's motto "More sizes = Better fit," the increments in between sizes are smaller allowing you to choose the fit more precisely.

La Sportiva Spire GTX fit

For example, in our case (men's foot length = 263 mm), we can either go with the US 8.5+ (266 mm) for a more one-to-one fit or opt for our regular US size 9 (270 mm) for a little more room.

Resultados de las pruebas
Spire GTX 265.8 mm
Promedio 268.4 mm
En comparación con 15 zapatillas de senderismo
Número de zapatillas
255.7 mm
Longitud interna
275.9 mm

Anchura de la parte delantera en la parte más ancha

We found the toebox volume of the Spire GTX to be on point for our D medium feet.

La Sportiva Spire GTX Toebox width at the widest part

In its widest part, our caliper recorded a standard measurement of 97.4 mm.

Resultados de las pruebas
Spire GTX 97.4 mm
Promedio 100.5 mm
En comparación con 24 zapatillas de senderismo
Número de zapatillas
94.6 mm
Anchura de la parte delantera en la parte más ancha
107.7 mm

Anchura de la parte delantera en la zona del dedo gordo

The shoe's toebox also has a fairly rounded shape which is reflected in a caliper reading of 78.8 mm at the big-toe mark. 

La Sportiva Spire GTX Toebox width at the big toe
Resultados de las pruebas
Spire GTX 78.8 mm
Promedio 81.2 mm
En comparación con 24 zapatillas de senderismo
Número de zapatillas
68.8 mm
Anchura de la parte delantera en la zona del dedo gordo
108.6 mm

Lengüeta: tipo de refuerzo

This La Sportiva shoe offers a very secure hold around the midfoot too thanks to the full-length gussets on both sides of the tongue.

La Sportiva Spire GTX Tongue: gusset type

Another benefit of this design is that you don't have to worry about water seeping into the shoe through the gaps.

Resultados de las pruebas
Spire GTX Ambos lados (completo)

Comodidad

Acolchado de la lengüeta

The Spire GTX offers a very welcome and cozy step-in feel. We found the shoe's internal padding pretty abundant without being too much.

La Sportiva Spire GTX Tongue padding

Measuring its tongue thickness returned 9.3 mm on our caliper and there is just about the same amount of foam packed inside the shoe's collar.

Resultados de las pruebas
Spire GTX 9.3 mm
Promedio 9.6 mm
En comparación con 24 zapatillas de senderismo
Número de zapatillas
5.0 mm
Acolchado de la lengüeta
17.0 mm

Tirador del talón

A finger loop is added at the back of the shoe for an easier on-and-off action.

La Sportiva Spire GTX Heel tab
Resultados de las pruebas
Spire GTX Tirador de dedo

Plantilla extraíble

If you are not happy with the Spire's stock insole, it can be easily removed and replaced with an insole or a custom orthotic of your choice.

La Sportiva Spire GTX Removable insole
Resultados de las pruebas
Spire GTX

Precio

The asking price of the La Sportiva Spire GTX is pretty steep for a hiking shoe but it is right on par with the average of hiking boots! Even though we can't completely agree with the shoe's full price, there are a few characteristics that make the Spire worth the extra cost in our opinion:

  • exceptional stability makes it feel a lot like a backpacking boot but without the high collar
  • unique Gore-Tex Surround waterproofing with ventilation ports

But if that's not what you value in a hiking shoe, it's hard to justify the above-average price point of this La Sportiva offering.

La Sportiva Spire GTX Gore-Tex waterproofing

Resultados de las pruebas
Spire GTX $209
En comparación con 28 zapatillas de senderismo
Número de zapatillas
€110
Precio
€220

Varios

Elementos reflectantes

There are no reflective elements on the La Sportiva Spire GTX but the silvery membrane that peeks through its midsole ports gleams slightly when hit with light.

Resultados de las pruebas
Spire GTX No