When I need to get my run on with Goober awake, the only way this is possible is if she "runs" with me in her little table/spin-y/roundabout toy while I use the treadmill. If she wasn't contained, then she'd be all over the place--trying to climb on the treadmill with me and such because she's a crawling master. However, since she does love to get around on her own now, the table toy can't keep her happy for longer than 10 minutes...so I must get my mileage in FAST.
And so does Goober.
Here's a video of her "running" laps. Notice the inhaler (minus albuterol cartridge) in her grip: she's prepared!