When I was in the Marines, day one they gave us these shorts and we had to run in them with just this and a shirt. Now 7 years and 30 pounds later I still use them when I run. Now i just wear Basketball shorts over them. They let my tiny dancer breathe and for less than 9 bucks, they can't be beat. Go for the olive drab for the full effect and get a half poly mix running shirt while your there. Not only are they the cheapest, theyr'e the best. If thousands of Marines use them to run and walk in 7 days a week in Boot Camp and beyond, I think you'll do just fine in them. Soffe Running Shorts

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i recomend running naked,its quite the expirence

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Any boxer briefs will work, I've been running in BVD cotton boxer briefs since I ran cross country in high school. They're cheap and comfortable, $13 for a 3 - pack.

http://www2.jcpenney.com/jcp/X6.aspx?ItemID=1589b0f&ItemTyp=C&GrpTyp=STY&ShowMenu=T&ShopBy=0&SearchString=bvd+briefs&RefPage=SearchDepartment.aspx&s4PageSize=15&CmCatId=searchresults&Search1Prod=True

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Shorts that have a built in boxer or brief are awesome because you won't have two separate waist bands chafing. It's nice to have both the boxer/brief and short stay in place for the whole run. I recommend the Run:Response Short ,and if you prefer to wear the two separately, you can buy just the boxer briefs, which are wicking and incredible, the WDW Boxer Brief

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The "best underwear for running" is no underwear. Running shorts, by definition, include a built-in liner.

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Best = nothing. Let the boys breath.

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Patagonia, Active Sport Boxer Briefs

This is the closest thing I can find to the patagonia capilene running boxer briefs that I picked up a few years ago before a deployment.

I run marathons but the true test of underwear for me is how it performs when you are rucking 10 miles with a hundred pounds of food, ammo and water not to mention body armor in 120+ heat.

Most of the seams on these things are woven instead of being sewn, and the major seam that normally runs along the inside of your thigh and tends to chafe the hell out of you is offset, which is brilliant. I wore nothing but these patagonia underbritches for a year long deployment and after I got back for running, they have all they are like compression shorts in a softer material with absolutely no chafing. Good stuff.

Then again, if you don't mind a little exposure you can always go with the military version of the high slit running shorts mentioned by others, we call them Ranger Panties.

Ranger Panties

first post, love the site.

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Bike jock straps. I usually run in gym shorts so the strap or UA compression shorts work best for me.

I honestly don't understand how some of you run commando. I've tried it once and my balls got pummeled. Easily my worst run ever so I'll NEVER do that again.

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Built-in liner FTW

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