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Mammut Runbold Review

These slim fit, lightweight pants are an excellent choice for warm breezy summer hiking
Mammut Runbold
Photo: Backcountry
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Price:  $129 List | $129.00 at Backcountry
Compare prices at 2 resellers
Pros:  Super lightweight, all pockets zippered, UPF 50 sun protection
Cons:  No elastic to roll up legs, fly is a little short
Manufacturer:   Mammut
By Ben Applebaum-Bauch ⋅ Review Editor  ⋅  Apr 15, 2021
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65
OVERALL
SCORE


RANKED
#9 of 17
  • Comfort and Mobility - 35% 6
  • Venting and Breathability - 20% 7
  • Versatility and Style - 15% 8
  • Weather Resistance - 15% 6
  • Features - 15% 6

Our Verdict

The Mammut Runbold enhances summertime hiking with its lightweight and breathable fabric. We love the features that this pair does come with, including five pockets that all have zippers to keep items secure and your mind at ease. These pants look good and fit skinny-legged hikers well. They are somewhat limited in their weather resistance. They do dry quickly, but they are no match for heavy precipitation. We recommend these pants to those who want sun protection in the heat of summer, but also want to stay as cool as possible.

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Pros Super lightweight, all pockets zippered, UPF 50 sun protectionAiry fabric, very comfortable, maximum mobilitySupple and mobile, DWR coating works great, fair pricecomfortable fabric, belt, zippered pocketsLook good, don't stretch, cinch cords in ankles
Cons No elastic to roll up legs, fly is a little shortWaist fit is loose, not great in cool weatherNot many pockets, slim fit may not be awesome for larger adultsShallow pockets, expensiveStiff, most pockets don't have zips
Bottom Line A lightweight pant for those that are looking for a slim fitFor comfort and breathability, these pants can’t be beatThis stellar pant surprised us with its high performance at an affordable priceThese pants are great for a variety of activities and conditionsAn excellent choice for anyone going straight from their desk to the trailhead
Rating Categories Mammut Runbold Ferrosi Pants Patagonia Quandary Chockstone/2 Royal Robbins Alpine Road
Comfort And Mobility (35%)
6
9
8
8
7
Venting And Breathability (20%)
7
9
7
7
6
Versatility And Style (15%)
8
7
7
7
8
Weather Resistance (15%)
6
5
7
6
7
Features (15%)
6
4
6
6
6
Specs Mammut Runbold Ferrosi Pants Patagonia Quandary Chockstone/2 Royal Robbins...
Weight (in oz) 9.0 oz 12.2 oz 10.0 oz 11.5 oz 13.8 oz
Material 85% polyamide,15% spandex 86% nylon, 14% spandex; 90D stretch woven ripstop 94% nylon (62% recycled), 6% spandex 88% nylon, 12% elastane 66% nylon, 31% polyester, 3% spandex
Water Resistance miDori DWR finish DWR finish DWR finish DWR finish
Sizing (waist, length options) 28, 30, 32, 34, 36, 38, 40 S: 28, 30, 32, 34, 36, 38, 40 T: 28, 30, 32, 34, 36, 38, 40 W: 28" - 38" W: 28" - 40"
L: 30", 32", 34"
W: 28" - 42" L: 30" - 34" W: 30" - 40" L: 30" - 34"
Sun Protection UPF 50+ not specified UPF 50 UPF 50 UPF 50
Convertible, or option available? No No, but convertible version available No No No
Pockets 2 side, 1 leg, 1 back 2 hand, 2 back, 1 thigh zip 2 hand, 2 back, 1 zippered thigh, 1 coin 2 hand, 2 back, 1 thigh 2 front, 2 rear, 1 cargo
Waist Strap/Fasten Stretchy w/ button and zip fly Button and zip fly Button and zip fly Button and zip fly Button and zip fly
Other Features All pockets zippered, stretch fabric Drawcord cuff closures, side zip pocket Front and back knee articulation, gusseted crotch, slim straight fit Cinch cord at cuff, removable belt Gussetted crotch, tapered leg, cinch cord at cuff

Our Analysis and Test Results

With a nice set of features and a slim fit, these surprisingly durable pants served us well. More than anything else, what separates these pants from the pack is their low weight and zippered pockets.

Performance Comparison


These slim fitting but stretchy hiking pants are lightweight and...
These slim fitting but stretchy hiking pants are lightweight and breathable.
Photo: Ben Applebaum-Bauch

Comfort & Mobility


With a fabric blend that includes 15% spandex, these pants are stretchy and comfortable. Considering their slim fit, they provide an exceptional degree of mobility. They come with an articulated knee design that helps prevent them from feeling tight when taking high steps.

The stretch in the fabric allows them to secure snuggly around...
The stretch in the fabric allows them to secure snuggly around hiking boots without bunching up.
Photo: Ben Applebaum-Bauch

There are a couple of issues our testers encountered in terms of comfort. The first is that while the articulation in the knee creates a little more mobility, the seams are noticeable. They aren't necessarily uncomfortable, but they are definitely there. One other minor issue is that the front button has a chunky backing that our testers could feel pressing into their stomachs.

Venting & Breathability


The Runbold thrives on its breathability. They are one of the lightest models in this review which is a direct result of the airy fabric that allows sweat and heat to escape rapidly.

There's no built-in system to hold them up, but the fabric rolls up...
There's no built-in system to hold them up, but the fabric rolls up and stays secure while on the move.
Photo: Ben Applebaum-Bauch

There aren't especially robust ventilation features in these pants. All of the pockets are at least partially mesh-lined, but there is nothing to secure them while they are rolled up and no other holes or zips. Despite that, our experience testing dozens of hiking pants tells us that these are some of the coolest pairs around.

Versatility & Style


These pants are meant for relatively warm weather. As long as the temperature is right, these pants are a good option for most outdoor activities, including paddling. They wouldn't be our first choice for long-haul traveling. They are comfortable generally, but the crotch doesn't have the same gusseting as most other pairs in this review so they don't quite provide the space that we would want if we were trying to get comfortable in an airplane seat.

The articulated knee keeps mobility high, which is useful for a...
The articulated knee keeps mobility high, which is useful for a variety of activities.
Photo: Ben Applebaum-Bauch

On the other hand, these pants are ready for a casual day out with friends. Their slim fit is stylish and the only obvious "these are hiking pants" feature is the thigh pocket, which fortunately has a very discreet zipper. If you like the idea of having a dual-threat hiking/hanging out pair, the Runbold will do the trick.

Weather Resistance


These pants don't resist weather so much as they'd rather avoid it. The strength of their breathability is also the weakness of their water-resistance. Though they are treated and do repel light rain, if you are in a moderate rainstorm, you are going to start feeling wet after about 5-10 minutes. Having said that, because the material is so thin, they do dry out very quickly.

This model isn't especially water-resistant. In fact, the fabric...
This model isn't especially water-resistant. In fact, the fabric absorbs moisture fairly quickly as seen on the right leg.
Photo: Ben Applebaum-Bauch

We ran into the same issue with wind protection. Since these pants thrive in warm weather, it might be an intentional feature, but they certainly aren't the pair to have if you know a lot of turbulent fronts are going to be pushing through during your adventure.

Features


This pair has just a few notable features, but we really appreciate them. There are four pockets: two front hand warmers that both have zippers as well as protective flaps to keep out precipitation, one rear zippered pocket on the right side, and one zippered leg pocket. All are large and deep enough to hold a large smartphone or a handheld GPS. The leg pocket is also strategically placed on the front thigh instead of at the side. We noticed this helped to reduce item jiggle and also made things somewhat easier to reach.

We appreciate the inclusion of the extra flap to conceal and protect...
We appreciate the inclusion of the extra flap to conceal and protect the hand pocket zippers.
Photo: Ben Applebaum-Bauch

The Runbold also has traditional belt loops. And that's about it. It's a straightforward, lo-frills model. No drawstring in the ankles, no integrated belt, but we think it all works together pretty well.

Value


These pants are pricey. We think that they are worth the cost if you need a top-performing pair specifically for warm weather. If you can grab them at a discount, even better, however, given that there are more effective all-around performers in this review, we aren't quite ready to say they are a great value.

Conclusion


The Mammut Runbold is one of our top go-tos when we know we will need the sun protection that pants provide but also want maximum breathability. They are lightweight, relatively comfortable, and their pockets are excellent. We like these pants.

This is a nice pair of pants for breezy, warm weather hiking.
This is a nice pair of pants for breezy, warm weather hiking.
Photo: Ben Applebaum-Bauch

Ben Applebaum-Bauch