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How We Tested Trail Running Shoes for Women

Thursday May 26, 2022

Where We Test


A good trail running shoe is characterized by its performance on the trail. As a result, we tested all contenders over a wide range of surfaces and environments over multiple years. We've literally run thousands of miles over varied terrain in South America, Canada, Europe, and throughout the United States. We've visited the summits of mountains, trained on the beach, ran through the valleys, and sweated it out in the desert. We have entered races in these shoes and executed our own, unsanctioned and unsupported endeavors.

trail running shoes womens - interval running the old horsethief trail up in ouray, colorado.
Interval running the Old Horsethief Trail up in Ouray, Colorado.
Credit: Amber King

We evaluate each shoe on its ability to perform across different categories. We typically carry our phones with us and frantically let Siri transcribe our thoughts as we narrate them. We also ensure that each model is tested fairly across a wide range of foot shapes and preferences by giving local runners and friends the shoes to test on the trails. We also do our research, cross-checking hundreds of other online reviews to make sure we weren't missing anything and to identify potential issues to look for. We condense all of this research and hands-on experience into a package of manageable information to help you make the best decision for yourself and your feet.

trail running shoes womens - we run at least 60 miles in each pair of shoes through a variety of...
We run at least 60 miles in each pair of shoes through a variety of conditions.
Credit: Amber King

Testing Metrics


Foot Protection


In this metric, we perform a variety of objective tests. While in the field, we observe which shoe provides the best protection underfoot. We notice if any trail debris penetrates the mesh uppers and which shoe offers the best water resistance while crossing streams. We actively try to get sand, water, and other particles into our shoes when we test this. We compare the protection of the uppers, tongue, and outsole. We also look at responsiveness, cushioning, and other protective elements, such as the hardness of the toe cap and how fit affects protection. We kick rocks with the toe bumpers and intentionally run across sharp rocks and compare the underfoot sensations as we go. We submerge our feet and time how long it takes for our socks to feel saturated. This time around, we executed a lot of beach runs in Morro Bay, CA, and found a shallow, sandy inlet that is perfect for testing the elemental protection of each shoe. We returned to the same spot again and again for continuity and to ensure a fair trial for all shoes.

trail running shoes womens - we found that we could simultaneously test each pair of shoes for...
We found that we could simultaneously test each pair of shoes for water-resistant properties, wet sand shed, and particulate matter at our favorite beach inlet.
Credit: Ally Arcuri

Traction


We have learned that we cannot judge a shoe based on the appearance of its outsole alone. The shape of the lugs and patterning makes a big difference in the grippiness of each shoe. We look at various surfaces in this metric and take notes for each shoe. We test on surfaces that included zoomy single track, sticky mud, snow, pavement, rocks and roots, wet rocks, sand, and plenty of slippery scree. We assess the comparative lug length and type of rubber used in each trail shoe. We also look at the lug shape and placement to determine how the form correlates to its best use. In addition, we note which shoes we subjectively feel safer and less slippery in.

trail running shoes womens - we look for a grippy outsole for running shoes we intend to wear on...
We look for a grippy outsole for running shoes we intend to wear on technical trails.
Credit: Ally Arcuri

Sensitivity


This test is relatively simple, though, of course, it contains some nuance. The shoe that provides the least protection underfoot from the trail provides the best sensitivity. The more we could feel the trail, the better the sensitivity. As a result, in addition to field tests, we compared the relative stack height to measure each shoe in this metric. Some stacked shoes provided better sensitivity than others, which is something that we were careful to take note of.

trail running shoes womens - a sensitive trail shoe, like the salomon sense ride 4, will allow...
A sensitive trail shoe, like the Salomon Sense Ride 4, will allow you to feel all of the nuance of the trail beneath your feet.
Credit: Ally Arcuri

Stability


When evaluating stability, we observe which shoes provide the most lateral support and which ones feel downright tippy. We measure the width of each shoe and compare its stack height to create a ratio. We also run over precarious surfaces to see which tip and which bend more. In general, shoes with a higher heel-to-toe differential were less stable than others. Zero-drop shoes are often the most stable because they often have a wider base of support and allow your heel to ride lower to the ground. Additionally, wider shoes tend to be a bit more stable because they allow your toes to splay which leads to better muscular engagement through the small muscles of the feet and ankles. Though we mostly assess stability based on the shoe shape, height, and profile, we also use a keen eye to gauge what each shoe encourages your feet to do. Typically, the more a shoe encourages the tiny muscles in your feet and ankles to fire, the higher the rating in this metric.

trail running shoes womens - stability is crucial to staying healthy while bombing down trails...
Stability is crucial to staying healthy while bombing down trails. Even though the Altra Olympus 4 doesn't provide as much trail feel as we like, the stability and space of an Altra-made, zero-drop shoe is profoundly secure.
Credit: Ally Arcuri

Comfort and Fit


We run with each shoe to see which one feels most homey for our feet when looking at comfort. We look at the cushioning, its responsiveness, and its relative thickness. We also look at the upper and how breathable and comfortable it feels on our toes. We are incredibly sensitive about lace beds and heel collars and while we acknowledge that not all runners are, we took special care to note which shoes will appeal to people who feel the same way about comfort (i.e., they take it very seriously).

We didn't award any points for fit simply because this is such a subjective category. Instead, we identified which shoes fit best for wide, narrow, and medium feet and where the relative support exists or doesn't exist. Some shoes run smaller than others and while each tester only purchases shoes in the correct size, some lie outside the lines of what we expect a traditional size X shoe to fit like.

trail running shoes womens - the way the upper of the salomon s/lab ultra 3 molds to your feet...
The way the upper of the Salomon S/Lab Ultra 3 molds to your feet makes it an incredibly comfortable and well-fitting shoe.
Credit: Ally Arcuri

Weight


To test weight, we measure each single shoe on the scale to see which is the most lightweight. We also note if the shoes feel trail dynamic or bulky when in use. In some cases, the underfoot cushion can feel heavy so we take note of how evenly distributed the weight of each shoe feels as we run.

trail running shoes womens - the right shoe should fit your foot like a glove, er, a sock, but...
The right shoe should fit your foot like a glove, er, a sock, but with extra protection.
Credit: Ally Arcuri

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