I assume the idea is NOT to pull up all 60+ feet of track inspecting each section for a short.
Do you have a digital meter than can measure "low" resistances? If there's a single short around the loop, you should be able to isolate the location to within a few feet. Then pull up just a few sections for closer visual inspection.
There is the brute-force approach of hooking a car battery (or the like) to blow out a short...smoking/melting/starting-fire to the offending track section. Not sure that's a "helpful suggestion" though.