Announcements

Use Your HSA/FSA Funds Toward Eligible Gear See Details
Earn 10% Cash Back On All Purchases & More Perks Join Summit Club+
Free Shipping For Orders Over $69 Learn More
We Teamed Up With EF Adventures: Your Dream Trip Awaits
Gear Worth Discovering: Introducing Backcountry Garage

Search

When autocomplete results are available use up and down arrows to review and enter to select. Touch device users, explore by touch or with swipe gestures.

Expert Help

Cart, contains 0 items

Accessibility Policy

Home Page

Cart, contains 0 items

Search

When autocomplete results are available use up and down arrows to review and enter to select. Touch device users, explore by touch or with swipe gestures.

Men
Men’s fall new arrivals
Clothing
Shirts
Activewear
Sun Protection
Hoodies & Sweatshirts
Shorts
Pants
Swimwear
Baselayers
Shop All Men's Clothing
Outerwear
Rain Jackets
Fleece Jackets
Casual Jackets
Technical Shells
Vests
Puffers & Insulation
Ski & Snowboard Jackets
Parkas
Shop All Men's Outerwear
Footwear
Hiking Boots
Hiking Shoes
Trail Running Shoes
Road Running Shoes
Approach Shoes
Sandals
Casual Shoes
Casual Boots
Water Shoes
Slippers
Winter Boots & Shoes
Shop All Men's Footwear
Accessories
Sunglasses
Caps & Snapbacks
Sun Hats
Socks
Neckwear & Bandanas
Gloves & Mittens
Bags & Packs
Duffels
Blankets & Beach Towels
Belts
Watches
Electronics
Shop All Men's Accessories
Top Brands
Patagonia
The North Face
Backcountry
Outdoor Research
Mountain Hardwear
Fjallraven
Black Diamond
Rab
Salomon
Mammut
La Sportiva
Marmot
Katin
Shop All Brands
New Arrivals On Sale Bestsellers
Women
Women’s fall new arrivals
Clothing
Tops
Activewear
Sweaters
Hoodies & Sweatshirts
Pants
Baselayers
Jumpsuits & Overalls
Shorts
Dresses & Skirts
Sun Protection
Swimwear
Shop All Women's Clothing
Outerwear
Rain Jackets
Fleece Jackets
Casual Jackets
Technical Shells
Vests
Puffers & Insulation
Ski & Snowboard Jackets
Parkas
Shop All Women's Outerwear
Footwear
Hiking Boots
Hiking Shoes
Trail Running Shoes
Road Running Shoes
Approach Shoes
Sandals
Casual Shoes & Sneakers
Casual Boots
Water Shoes
Slippers
Winter Boots & Shoes
Shop All Women's Footwear
Accessories
Sunglasses
Caps & Snapbacks
Sun Hats
Socks
Neckwear & Bandanas
Headbands
Gloves & Mittens
Everyday Bags
Backpacks
Beach Bags & Totes
Blankets & Beach Towels
Belts
Watches
Electronics
Shop All Women's Accessories
Top Brands
Patagonia
The North Face
Backcountry
Free People
Mountain Hardwear
Outdoor Research
Salomon
prAna
Barbour
La Sportiva
Rab
Mammut
Cotopaxi
Shop All Brands
New Arrivals On Sale Bestsellers
Kids
Infant & Toddler (0-5T)
Jackets & Outerwear
Fleece Jackets
Rain Jackets
Tops
Bottoms
Swimwear
One-Pieces & Buntings
Baselayers
Shop All Infant & Toddler
Kids (5+)
Jackets
Fleece Jackets
Rain Jackets
Tops
Bottoms
Swimwear
Snow Outerwear
Baselayers
Shop All Kids
Footwear
Sneakers & Casual Shoes
Sandals & Water Shoes
Hiking Boots & Shoes
Rain Boots
Winter Boots
Toddler Shoes
Infant Shoes
Shop All Footwear
Accessories
Gloves & Mittens
Hats
Beanies
Balaclavas & Neck Gaiters
Socks
Sunglasses
Shop All Accessories
Everyday Essentials
Backpacks
Kid Carriers
Strollers & Trailers
Water Bottles
Lunch Boxes
Gear By Activity
Ski
Snowboard
Bike
Camp
Climb
Water
Shop All Gear
New Arrivals On Sale
Footwear
Waterproof gear | Hiking boots, rainwear & more storm-ready styles
Men's
Hiking
Trail Running
Road Running
Approach
Casual Shoes
Casual Boots
Winter Boots
Slippers
Sandals
Bike
Climb
Water
Rain
Shop All
Women's
Hiking
Trail Running
Road Running
Approach
Casual Shoes
Casual Boots
Winter Boots
Slippers
Sandals
Bike
Climb
Water
Rain
Shop All
Kids'
Boys
Girls
Toddler Boys
Toddler Girls
Infant
Shop All
New Arrivals On Sale HSA/FSA Eligible
Camp
Gearhead Picks: Camp | Tents, sleep systems, camp furniture & more
Hike
Hiking Clothing
Hiking Footwear
Backpacking Packs
Technical Daypacks
Hydration Packs
Kid Carriers
Water Bottles
Headlamps
Navigation
Trekking Poles
Shop All
Camp
Tents & Shelters
Sleeping Bags
Sleeping Pads
Coolers
Camp Chairs
Camp Tables
Stoves & Grills
Drinkware
Pots & Pans
Kitchen
Lighting
Hammocks
Pillows
Blankets
Shop All
Overlanding
Roof Racks & Accessories
Rooftop Tents
Survival
First Aid
Batteries & Solar Power
Navigation
Water Storage & Purification
Tools
Storage Solutions
Showers
Outhouses
Off-Road Recovery
Shop All
New Arrivals On Sale Ask A Gearhead
Bike
Pay with your HSA/FSA on qualifying gear
Bikes & Frames
Mountain Bikes
Road Bikes
Gravel & Cyclocross Bikes
eBikes
Kids' Bikes
Build A Custom Bike
Shop All
HSA/FSA Eligible
Components
Wheels & Tires
Brakes, Drivetrain, Shifters
Pedals, Handlebars, Grips
Saddles, Seatposts, Stems
Suspension
Mountain Components
Road Components
Triathlon Components
Shop All
Apparel & Accessories
Men's Bike Apparel
Women's Bike Apparel
Kids' Bike Apparel
Shop All
Footwear
Mountain Bike Shoes
Road Bike Shoes
Flat Pedal Shoes
Triathlon Shoes
Shop All
Helmets & Protection
Mountain Bike Helmets
Full Face Helmets
Road Bike Helmets
Commuter Helmets
Knee & Shin Pads
Arm & Elbow Pads
Chest & Spine Protection
Shop All
Essentials
Bike Maintenance
Bike Storage & Transportation
Car Racks
Bike Packs & Bags
Trainers & Accessories
Bike Lighting & Electronics
Nutrition
Hydration Packs
Water Bottles & Cages
Bike Trailers
Shop All
Climb
Gearhead Picks: Climb | The latest, hand-picked gear for going up
Climbing Shoes Mountaineering Boots Ropes Harnesses Helmets Apparel
Hardware & Protection
Camming Devices
Passive Protection, Pitons & Hooks
Belay & Rappel Devices
Ascenders, Descenders & Pulleys
Carabiners & Quickdraws
Slings, Webbing & Cords
Ice Axes
Accessories
Crampons
Daypacks
Rope Bags
Chalk Bags & Buckets
Crash Pads
Brush Kits
Training
Climb Packages On Sale New Arrivals
Travel
Gearhead Picks: Travel | The best bags, luggage & essentials for exploring
We teamed up with EF Adventures to create four unforgettable trips
Travel Bags
Duffel Bags
Rolling Bags
Carry-On Luggage
Travel Packs
Organizers
Camera Packs & Bags
Backpacks
Travel Packs
Everyday Packs
Technical Daypacks
Backpacking Packs
Hydration Packs
Winter Packs
Gear Transport
Bike Racks
Ski Boot Bags
Ski Bags
Snowboard Boot Bags
Snowboard Bags
Fly Fishing Bags & Luggage
Bike Travel Cases
Surfboard Bags & Packs
Essentials
Sunglasses
Water Bottles
Blankets
Wallets
Water Filters & Purification
Travel Pillows
Power Converters
Audio
New Arrivals On Sale Ask A Gearhead
Ski
Ski Gear Buyer’s Guide | Skis, boots, bindings & more of the year’s best gear
Ski packages | Save up to 30% on a full setup
Skis & Bindings
All Skis
Alpine Skis
Ski Packages
Alpine Touring Skis
Kids' Skis
Cross-Country Skis
Alpine Bindings
Touring Bindings
Cross-Country Bindings
Ski Boots
All Boots
Alpine Boots
Touring Boots
Cross-Country Boots
Kids' Boots
Ski Poles
Poles
Adjustable Poles
Cross-Country Poles
Kids' Poles
Helmets & Goggles
Helmets
Goggles
Alpine Touring
Alpine Touring Skis
Alpine Touring Boots
Alpine Touring Bindings
Avalanche Safety
Airbag Packs
Backpacks
Skins
Poles
Travel & Essentials
Ski Bags
Boot Bags
Backpacks
Car Racks & Boxes
Tuning Accessories
Boot Dryers & Heaters
Snowshoes
Men's Ski Clothing
Ski Jackets
Ski Pants & Bibs
Midlayers
Baselayers
Ski Socks
Hats, Gloves & Mittens
Women's Ski Clothing
Ski Jackets
Ski Pants & Bibs
Midlayers
Baselayers
Ski Socks
Hats, Gloves & Mittens
Youth Ski Clothing
Kids'
Toddlers'
Snowboard
Snowboard Gear Buyer’s Guide | Boards, boots, bindings & more of the year’s best gear
Snowboard packages | Save up to 30% on a full setup
Boards & Bindings
Snowboards
Snowboard Packages
Splitboards
Kids' Snowboards
Snowboard Bindings
Splitboard Bindings
Kids' Bindings
Snowboard Boots
Snowboard Boots
Splitboard Boots
Kids' Boots
Helmets & Goggles
Helmets
Goggles
Splitboarding
Splitboards
Splitboard Boots
Splitboard Bindings
Avalanche Safety
Airbag Packs
Backpacks
Skins
Poles
Travel & Essentials
Snowboard Bags
Boot Bags
Backpacks
Car Racks & Boxes
Tuning Accessories
Snowshoes
Boot Dryers & Heaters
Traction Pads
Men's Snowboard Clothing
Snowboard Jackets
Snowboard Pants & Bibs
Midlayers
Baselayers
Snowboard Socks
Hats, Gloves & Mittens
Women's Snowboard Clothing
Snowboard Jackets
Snowboard Pants & Bibs
Midlayers
Baselayers
Snowboard Socks
Hats, Gloves & Mittens
Youth Snowboard Clothing
Kids'
Toddlers'
New Arrivals Ski Snowboard Bike Hike & Camp Overlanding Climb Travel Fishing
Snowshoe Run Paddle Surf Dog Gear Training Yoga Wake HSA/FSA Eligible
Bike
Hike & Camp
Travel
In-house collections made by our Gearhead Experts
New brands. Fresh gear. Explore new arrivals built for changing seasons.
New Exclusives Sale Exclusives Built By Us
BGA
Basin + Range
Coalatree
Stoic
Top Brands
Patagonia
The North Face
Burton
Smartwool
Helly Hansen
Columbia
Outdoor Research
Salomon
Black Diamond
Mountain Hardwear
Sorel
Smith
Flylow
Hestra
Mammut
La Sportiva
On
See All Brands
New To Us
Finisterre
Splits59
Daydreamer
Beyond Medals
Year of Ours
Alpha Industries
HIMALI
Notace
Nike ACG
Speedland
Xero
Wrangler
Rains
Backcountry Garage
Millet
Kitworks
Escape Climbing
Rungne
Cache
Haven
Take 20% off full-price items. Deal ends 10/19. Exclusions apply.
EXTRA 20% off clearance | Ends 10/19
All Sale Clearance New to Sale Latest Price Drops
Men's
Clothing
Footwear
Women's
Clothing
Footwear
Kids'
Clothing
Footwear
Activities
Camp
Bike
Travel
Climb
Run
Ski
Snowboard
Brands
Patagonia
The North Face
Cotopaxi
Outdoor Research
Smartwool
Outlet
70% Off Or More
Deals Under $50
Deals Under $100

20% Off Full-Price Items

Ends 10/19

EXTRA 20% Off Clearance

Shop now | Ends 10/19

Bike Gear & Apparel On Sale

Shop up to 40% off

Mammut

Mammut Gray Run

6 results

gray

- Headwear (2)
- Men's Running Clothing (2)
- Trail Running Shoes (2)

M (1)
XL (1)
One Size (2)
31 (1)

black (21)
blue (15)
gray (6)
purple (5)
white (4)
green (3)

red (3)
yellow (2)
brown (1)

male (3)
unisex (2)
female (1)

10% and more (6)
20% and more (1)
30% and more (1)
40% and more (1)
50% and more (1)

$

to

$

$0 - $49.99 (5)
$100 - $199.99 (1)

Aenergy (1)
Taiss (1)

Trail Running (6)
All-Mountain Skiing (3)
All-Mountain Snowboarding (3)
Backcountry Skiing (3)
Backcountry Snowboarding (3)
Freeride/Powder Skiing (3)
Freeride/Powder Snowboarding (3)
Hiking (3)
Backpacking (2)
Casual (2)
Park & Freestyle Skiing (2)
Park & Freestyle Snowboarding (2)
Road Running (2)
Bouldering (1)
Ice Climbing (1)

6.0 (1)
9.5 (1)
10.0 (1)
11.0 (1)
11.5 (1)
12.0 (1)

HSA/FSA Eligible (2)

Anti Odor (2)
Abrasion Resistant (1)
Thermal (1)
Water Resistant (1)

Form-Fitting (1)
Semi-Fitted/Slim (1)

Synthetic (3)
Wool (3)

Responsibly Sourced (1)

Learn more about responsible products

5 stars (1)
4 stars & Up (1)
3 stars & Up (1)
2 stars & Up (2)
1 star & Up (2)

New Arrival

Mammut

Taiss ML Jacket - Men's

3 colors

$169.00

(1)

New Arrival

Mammut

Tree Wool Thermal FL 3/4 Tights - Men's

1 color

$99.00

Buy 3+, Save 20%

New Arrival

Mammut

Tree Wool Neck Gaiter

2 colors

$35.00

HSA/FSA Eligible

Mammut

Aenergy Trail All Mountain Low Running Shoe - Men's

3 colors

$149.00

Mammut

Tree Wool Headband

2 colors

$29.00

HSA/FSA Eligible

Mammut

Saentis TR Low Shoe - Women's

1 color

Current price: $83.40 Original price: $139.00

40% off

(1)

Need Expert Advice?

Our Gearheads Can Help

1-801-204-4655

Help Center

Help

Help Center
Find A Store
Order Status
Return Policy
Start A Return
Shipping Policy
Build A Custom Bike
Pay Later with Affirm
Group Sales
Gift Cards
Gift Card Terms and Conditions
HSA/FSA Eligible Purchases

About Us

About Backcountry
Summit Club Loyalty Program
Explore Blog
Articles
Career Job Site
Shop Services
Affiliate Program
Student Offers
Sell On Backcountry
Collections
Special Group Offers
All Categories

Backcountry Family

Competitive Cyclist
Steep and Cheap
MotoSport
BikeTiresDirect
Western Bikeworks
TriSports

Sign Up for Promotional Emails & Get Exclusive Offers

Email Address

Sign up for text alerts & get 15% off

First dibs on products, sales & exclusives

Disclaimer: Discount applies to full-price items only. Exclusions Apply. By submitting this form, you agree to receive recurring automated marketing text messages (e.g. AI content, cart reminders) from Backcountry at the number you provide. Consent not a condition of purchase. We may share info with service providers per our Privacy Policy. Reply HELP for help & STOP to cancel. Msg frequency varies. Msg & data rates may apply. By submitting this form, you also agree to our Terms & Privacy Policy.

Phone Number

Download on the App Store

Like us on Facebook
Follow us on Instagram
Subscribe to us on Youtube
footer.tiktok

Backcountry logo

Terms Of Use Privacy Policy Do Not Sell My Personal Information CA Supply Chain Act Accessibility Statement

Mammut Gray Run

Headwear (2)

Men's Running Clothing (2)

Running Shoes (2)

Trail Running Shoes (2)

Clothing Size

M (1)

XL (1)

One Size (2)

31 (1)

Color

.css-yab3pc{height:23px;width:23px;border-radius:50%;margin-right:var(--chakra-space-1);background-color:#000;box-shadow:inset 0 0 0 3px #fff,0 0 0 1px #ccc;}black (21)

.css-2gcc7g{height:23px;width:23px;border-radius:50%;margin-right:var(--chakra-space-1);background-color:#369;box-shadow:inset 0 0 0 3px #fff,0 0 0 1px #ccc;}blue (15)

.css-85t8iu{height:23px;width:23px;border-radius:50%;margin-right:var(--chakra-space-1);background-color:#ccc;box-shadow:inset 0 0 0 3px #fff,0 0 0 1px #000;}gray (6)

.css-1ingyn9{height:23px;width:23px;border-radius:50%;margin-right:var(--chakra-space-1);background-color:#639;box-shadow:inset 0 0 0 3px #fff,0 0 0 1px #ccc;}purple (5)

.css-yle8g5{height:23px;width:23px;border-radius:50%;margin-right:var(--chakra-space-1);background-color:#fff;box-shadow:inset 0 0 0 3px #fff,0 0 0 1px #ccc;}white (4)

.css-1nhbdo3{height:23px;width:23px;border-radius:50%;margin-right:var(--chakra-space-1);background-color:#093;box-shadow:inset 0 0 0 3px #fff,0 0 0 1px #ccc;}green (3)

.css-1c4afls{height:23px;width:23px;border-radius:50%;margin-right:var(--chakra-space-1);background-color:#f00;box-shadow:inset 0 0 0 3px #fff,0 0 0 1px #ccc;}red (3)

.css-1ryiaxq{height:23px;width:23px;border-radius:50%;margin-right:var(--chakra-space-1);background-color:#ff0;box-shadow:inset 0 0 0 3px #fff,0 0 0 1px #ccc;}yellow (2)

.css-7bc19j{height:23px;width:23px;border-radius:50%;margin-right:var(--chakra-space-1);background-color:#963;box-shadow:inset 0 0 0 3px #fff,0 0 0 1px #ccc;}brown (1)

Gender

male (3)

unisex (2)

female (1)

Sale

10% and more (6)

20% and more (1)

30% and more (1)

40% and more (1)

50% and more (1)

Price

$0 - $49.99 (5)

$100 - $199.99 (1)

Collections

Aenergy (1)

Taiss (1)

Recommended Use

Trail Running (6)

All-Mountain Skiing (3)

All-Mountain Snowboarding (3)

Backcountry Skiing (3)

Backcountry Snowboarding (3)

Freeride/Powder Skiing (3)

Freeride/Powder Snowboarding (3)

Hiking (3)

Backpacking (2)

Casual (2)

Park & Freestyle Skiing (2)

Park & Freestyle Snowboarding (2)

Road Running (2)

Bouldering (1)

Ice Climbing (1)

Shoe Size

6.0 (1)

9.5 (1)

10.0 (1)

11.0 (1)

11.5 (1)

12.0 (1)

Shop By

HSA/FSA Eligible (2)

Features

Anti Odor (2)

Abrasion Resistant (1)

Thermal (1)

Water Resistant (1)

Fit

Form-Fitting (1)

Semi-Fitted/Slim (1)

Material

Synthetic (3)

Wool (3)

Responsibility

Responsibly Sourced (1)

Customer Reviews

4 stars & Up (1)

3 stars & Up (1)

2 stars & Up (2)

1 star & Up (2)

Taiss ML Jacket - Men's

black (21)

blue (15)

gray (6)

purple (5)

white (4)

green (3)

red (3)

yellow (2)

brown (1)