From 5k to ultra, the men's RaidLight Activ Run Zip T-shirt is a great lightweight choice for all types of running and all distances.

running-shirts

Around mile 3 is when you start to really appreciate—or think about replacing—your gear. Tough, breathable and stretchy, the men's 30 in. inseam REI Co-op Activator 3.0 pants are definitely keepers.

pants

Around mile 3 is when you start to really appreciate—or think about replacing—your gear. Tough, breathable and stretchy, the men's 32" inseam REI Co-op Activator 3.0 pants are definitely keepers.

pants

Around mile 3 is when you start to really appreciate—or think about replacing—your gear. Tough, breathable and stretchy, the men's 34" inseam REI Co-op Activator 3.0 pants are definitely keepers.

pants

For hard training sessions and active lifestyles, these Craft Active Intensity base layer pants help you regulate your body temperature for extended comfort no matter what you're planning to conquer.

base-layer-bottoms

Your active, high-intensity lifestyle calls for the Craft Active Intensity base layer top. Wear this bestseller for training, running and skiing, whether it's cross-country or backcountry.

base-layer-tops

Your active, high-intensity lifestyle calls for the Craft Active Intensity zip base layer top. Wear this bestseller for training, running and skiing, whether it be cross-country or backcountry.

base-layer-tops

Combining a clean look you can wear to the office with the on-the-move comfort you crave off the clock, the men's On Active pants are cut from a high-stretch performance fabric meant for going places.

casual-pants

With 4-way stretch and wicking mesh fleece inside, the mid-weight men's REI Co-op Active Pursuits full-zip hoodie is warm but breathable—ideal for warm-up and cooldown time.

running-jackets

The men's REI Co-op Active Pursuits half-zip shirt stretches four ways for easy mobility on the trail, and offers breathable warmth for comfortable lounging after your run.

hiking-shirts

Moisture-wicking and quick-drying, the men's REI Co-op Active Pursuits long-sleeve T-shirt protects you from morning chill, midday sun and trailside brambles.

running-shirts

With a new softer feel, the men's REI Co-op Active Pursuits 2.0 quarter-zip shirt is ideal for cool-weather workouts: warm before and after; breathable and wicking so you don't overheat during.

running-shirts

Grab some summer comfort on the trail or in the gym with the ultralight REI Co-op 7 in. Active Pursuit men's shorts. They breathe, wick moisture, dry quickly and offer 4-way stretch.

running-shorts

Daydreaming about summer days on the trail? Include the REI Co-op Active Pursuits T-Shirt and imagine yourself staying supremely cool and comfortable on those sunny switchbacks.

running-shirts