Run the cable wires across the room to the outlet and cover them with a cable floor cover.
Drill flat-head screws through the edges of the cover and into the floor if you are worried about the cover being kicked and knocked out of place. You can also place a rug over the top of the cover to completely hide the cable from view and add another layer of protection.
Run the cable along the floor around the outer wall of the room. You can then tuck the cable up under the baseboard to get it out of sight and protect it from damage. This can usually be done if the room is carpeted.
Staple the cable to the baseboard if you cannot tuck it under. This will keep it secure to the wall so that it cannot get tangled up in people's feet. You can also use adhesive-backed cable clips that will stick to the baseboard and let you snap the cables into place.