I work out at the university I attend to now. George Mason University. We are not allowed to carry firearms in the buildings at GMU. So I am pretty much just boned.
Something like this that I picked up a while ago in Australia.
#RESIST
I throw the gun, holster and all, in a fanny pack along with my wallet and keys.
I'm not carrying the gun at the gym so I can have immediate access to it, I'm carrying it so I don't get it stolen out of my locker.
Fanny pack stays on my while lifting, or in cup holder of the treadmill/cardio torture thing I'm using if I'm "running".
It's not ideal...but I haven't had it stolen out of my locker yet, so I'm ahead of the game.
I've been carrying at the gym for years; just put it in the same bag I usually carry from station to station. You do have to be very careful.
I am always aware of where it is (I can see or feel it), and where in the bag/what the orientation of the pistol in the bag is too. Ditto my partner when I have one.
The gym has 5 locations in town and is very popular w local cops/feds, and many do the same. Owner knows and is OK w it (has a LE background). Got very popular a few yrs ago when a gang was ambushing cops off duty at the gym, soccer/ball games, ya know, places where it safe and/or inconvenient to carry...
This has worked out for me for the last few years. I wanted to try the pistolwear holster that tmoore912 recommended in the first postings, but they seem to be out of stock every time I check the website. Just keep the pack attached to ya or on the machine you're on and be observant of who is around at all times.
I use there PT-ONE holster for jogging, working out at the gym or any other active lifestyle activity I do. I have been using one for a while and works well for me. It is made out of neoprene and is really comfortable and keeps the gun dry when I sweat, but it doesn't have the space a fanny pack has. It only has enough room for the gun and a magazine. It is designed to be worn a little low on the hips instead of on the waist. (This helps reduce the bouncing of the gun). When going to the gym I wear my shorts over the holster so that it doesn't show if my shirt rides up while doing a weight lifting move.
I worked out this morning and ran a couple miles afterward with it on carrying my Glock 17.