If only about 100ft you can get a roll of under ground wire for less than $60, cut your grass real low----take a lawn edger and go from point A to point B----2 or 3 timed cutting a little trench about as wide as your finger---clean it out with your finger, lay the wire in this shallow ditch----cover it and remember its there(no digging on that line)---hook up each end and your done.OK, Thanks. I guess I will have to see how long the longest cord at the big box store is.