Running Baselayers

The best running baselayers, reviewed and curated by the Trailspace community. The latest review was added on December 1, 2019. Stores' prices and availability are updated daily.

Recent Running Baselayer Reviews

rated 4.5 of 5 stars
Smartwool Merino Sport 150 Brief

Super comfortable undies, which will help you stay sweet smelling for days, with no chafing. Yeah, I'm reviewing underwear. Being a big Merino fan, I decided it was time to take the final step towards full commitment, by going right down to the basics. I decided to give these a try.   Fit: The overall fit is good. I'd read a couple of reviews criticizing the extra wide waistband, but in my opinion, it makes them much more stable and keeps them in place better than other briefs I've used. I like… Full review

rated 5 of 5 stars
Thinx Classic Undies

Dealing with periods in the backcountry can be incredibly frustrating. But Thinx unswear just might offer a solution. Periods are a regular part of most women's life. And yet they're still taboo to talk about. Instead of weighing all of our options, we pace along the period aisle in the grocery store, opting to use the most popular products (pads and tampons). But what other options are there? And how do you begin to handle periods in the backcountry? As someone who spends a lot of time in the wilderness,… Full review

rated 5 of 5 stars
prAna Sophia Bra Top

This bra does a nice "lift and separate." The plunging neckline looks great for me, which isn't usually a flattering style on my figure. I can't wear regular bras, only sports bras, and this is comfortable, supportive, AND looks great! I'm excited to wear some favorite dresses and not worry about my bra and the neckline. Full review

rated 5 of 5 stars
ExOfficio Give-N-Go Boxer Brief

6-star underwear! Would give six stars if I could. Have owned two pairs for about five years now. Initially purchased for treks to avoid the dreaded chafing. They are now used for any athletic venture. Quality: Two pair that have lasted five years, that alone is impressive. Material is kind on the skin, stretches well, but stays on the body.   Comfort: Have worn on 15-mile hikes, lots of sweating and ZERO chafing. They wick moisture amazingly and keep their form after a long day. Breathable: No… Full review

rated 1 of 5 stars
ExOfficio Give-N-Go Boxer Brief

The fabric makes the genitals sweat and smell. The fabric seems okay, but the genitals sweat and now smell.  Full review

rated 5 of 5 stars
Minus33 Acadian Lightweight Boxer Brief

Worn for seven days straight on a canoe trip in Northern Maine during variable weather in august!!! Amazing!!! We outdoor industry dedicatees remember the Ex Officio campaign claiming that their underwear could take you around the world and beyond. That their undies are so great that with a simple weekly sink washing whenever you happen into a hostel your drawers will smell of roses and no crotch rot will ever inhibit your adventuring. As is my way, I put them to the test.  They were good, I’ll… Full review

rated 4 of 5 stars
ExOfficio Sol Cool Boxer Brief

Jade infused fabric pulls moisture from your body for a cool sensation. Slim fit does not bunch up. I was sent a pair of ExOfficio Sol Cool boxer briefs in late January for testing and review. I actually tried to wear them during the winter but found that they were just too cool for comfort at that time of the year. Once things started to warm up I gave them a thorough workout. Comprised of 52% Cotton, 42% Nylon, 6% Spandex, the nylon has been infused with Jade, yes, Jade the rock. Apparently,… Full review

rated 5 of 5 stars
MyPakage Pro Series 2-in-1

Pro series long underwear and athletic shorts in one package. The unique MyPakage 3 dimensional pouch protects your precious parts. Unless you have worn MyPakage underwear, you are really missing a great experience. Utilizing their 3-dimensional keyhole technology pouch that surrounds your package, they give you the best feeling underwear on the planet. There is no more adjusting your package because the pouch keeps everything nicely tucked away and not in constant contact with your legs. Forget… Full review

rated 5 of 5 stars
Terramar Mesh Pro Boxer Brief 6"

Unbelievable! Great value and extremely comfortable! These Terramar High Performance Boxer Briefs were a lifesaver. Not only did they fit great, they were easy to wash, dried out fast, and provided plenty of support on those long day hikes. Did I mention they are less expensive than most of the other odor-eliminating briefs I came across as well? If you are looking for new briefs give these a shot. You will not be disappointed. Full review

user rating: 4.5 of 5 (9)
ExOfficio Give-N-Go Boxer Brief Boxer/Brief/Bikini
$15 - $26
user rating: 5 of 5 (1)
Icebreaker Siren Bra Sports Bra
$37 - $50
user rating: 4.5 of 5 (1)
ExOfficio Give-N-Go Sport Mesh Brief Boxer/Brief/Bikini
$14 - $25
user rating: 4.5 of 5 (1)
Icebreaker Anatomica Brief Boxer/Brief/Bikini
$24 - $27
user rating: 4.5 of 5 (1)
Smartwool Merino Sport 150 Brief Boxer/Brief/Bikini
$25
user rating: 4 of 5 (1)
SportHill Northwind Unders Boxer/Brief/Bikini
$26 - $50
user rating: 4 of 5 (1)
ExOfficio Sol Cool Boxer Brief Boxer/Brief/Bikini
$10 - $41
user rating: 4 of 5 (1)
ExOfficio Give-N-Go Lacy Full Cut Brief Boxer/Brief/Bikini
$12
user rating: 3.5 of 5 (2)
ExOfficio Give-N-Go Boxer Boxer/Brief/Bikini
$16 - $26
user rating: 4.5 of 5 (2)
MyPakage Action Series Boxer Brief Boxer/Brief/Bikini
$40 MSRP
user rating: 5 of 5 (1)
Minus33 Acadian Lightweight Boxer Brief Boxer/Brief/Bikini
user rating: 5 of 5 (1)
Champion C9 Premium Boxer Briefs Boxer/Brief/Bikini
user rating: 5 of 5 (1)
prAna Sophia Bra Top Sports Bra
$40 MSRP
user rating: 5 of 5 (1)
Terramar Mesh Pro Boxer Brief 6" Boxer/Brief/Bikini
$18 MSRP
user rating: 5 of 5 (1)
Ibex Balance Briefs Boxer/Brief/Bikini
$25 MSRP
user rating: 5 of 5 (1)
Adidas Sport Performance Flex 360 Boxer Brief Boxer/Brief/Bikini
user rating: 5 of 5 (1)
New Balance Performance Underwear 9 Inch Inseam Boxer Brief Boxer/Brief/Bikini
user rating: 5 of 5 (1)
ExOfficio Give-N-Go Lacy Bikini Boxer/Brief/Bikini
user rating: 5 of 5 (1)
MyPakage Pro Series 2-in-1 Performance Pant/Tight / Boxer/Brief/Bikini
$90 MSRP
 
user rating: 5 of 5 (1)
RedRam Merino Boxer Briefs Boxer/Brief/Bikini
user rating: 5 of 5 (1)
Thinx Classic Undies Boxer/Brief/Bikini
user rating: 4.5 of 5 (1)
Verve Cassandra Bra Sports Bra
$38 MSRP
user rating: 4 of 5 (1)
Wickers Visco-Wool Boxer Boxer/Brief/Bikini
user rating: 4 of 5 (1)
Isis Henna Day Sports Bra
$34 MSRP
user rating: 4 of 5 (1)
Under Armour Original Series 9-inch Boxerjock Boxer/Brief/Bikini
user rating: 3 of 5 (1)
Isis Active Bra Sports Bra
user rating: 5 of 5 (2)
Stoic Merino 200 Boxer Brief Boxer/Brief/Bikini
discontinued
user rating: 3 of 5 (1)
Gordini Silkweight Briefs Boxer/Brief/Bikini
discontinued

In order to show you the most useful information, we have omitted some unreviewed products. View the complete product list »